5-2 Heavy-duty Contactors, DS303 Fig. 1. DS303 Size 3 with auxiliary interlock Fig. 2. DS303 Size 1 1NO/1NC poles Fig. 3. DS303 Size 6 with auxiliary interlock WHERE TO USE For motor and resistive loads choose con- tactors with the required dc current-carry- Use for heavy duty dc industrial applica- ing capacity as given in the application table tions such as steel mills, cranes, material on page 5-6. handling, rapid transit as well as general- For resistive and motor loads through duty machine tool, textile machinery and 1000-volt motor applications, specify units similar applications. Contactors have a steel with maximum blowout ratings listed for base insulated from the electrical circuits. each size from Step 1 tables. They can be mounted on either metal or insulating panels. For moderately inductive loads, such as motor fields with discharge resistors, select NEMA Size 1-5 are available in various NO and NC pole combinations. Sizes 6-10 contactors with blowout ratings two to three times rated full-load dc current. The dis- available in NO pole only. charge resistor can be permanently con- Advanced design arc chutes (non-asbes- nected in parallel with the load or can be tos) provide make or interrupt ratings of up connected across the load with a normally to ten times the contactor ratings for 600- closed pole. A contactor with NO and NC volt applications and four times the contac- pole can be used. The normally open pole tor ratings for 1000-volt applications. The will disconnect power. The discharge resis- arc is completely extinguished within the Fig. 4. IC2800Y108 Size 9 tor should not exceed four times the load arc chute structure. resistance for 250 volts or two times the load Select-contactor ratings on the basis of resistance for 600 volts. both dc current-carrying capacity and blow- For motor and resistive loads, contactors out ratings. The blowout rating establishes will interrupt ten times blowout rating at the contactor current rating and interrupt- Order interlocks either factory-mounted or 600 volts and four times blowout rating at separately supplied depending upon antici- ing rating. Larger contactors are used be- 1000 volts, maximum. See application table, cause the increased tip gap provides im- pated use. If applications are known in ad- page 5-6. vance, factory-mounted interlocks can be proved interruption on the lower current For highly inductive loads, such as brake application. ordered. If flexibility in application is de- coils without discharge resistors, use two sired, order interlocks and mounting kits The function of the blowout coil is to poles in series for opening both sides of the separately and mount as needed. Select volt- move the arc upward at the same time the line. For highly inductive loads such as age range depending on application. contacts are opening, thus forcing the arc IC9528A106 brakes or equivalent magnets, away from the tips and into the arc chute at Mechanical interlocks—Mechanical inter- choose contactors with blowout ratings locks between two contactors allows only a faster rate. equal to load current. one contactor to close. See page 5-5. For no-load operation choose contactors Normally closed pole applications. For from Step 1 page 5-3. Earlier designs for this listed NC devices, only 1.5 times make rat- application did not contain arc chute or ing can be obtained. For more severe or blow-out coil. Contactors listed contain arc larger make ratings of up to 10 times rated chute and blow-out coils and will operate current, see IC2800Y105 and Y106, page under these same conditions. 5-10. Data subject to change without notice CONTACTORS, RELAYS DC Contactors and Relays 5-3 Heavy-duty Contactors EXAMPLE: Same as first example except for EXAMPLE: 600-volt open contactor, unit HOW TO ORDER (Cont’d) 115-volt ac operation and 2 NO interlocks mounted, 25 amp, 1 NO pole, 25-amp blow- By catalog number—Order contactors by for right-hand mounting. out (Step 1) 115-volt dc coil (Step 2), with 2 complete DS number, where given, including NO interlocks for left-hand mounting (Step DS303 A1A01EX A650 XG form, coil number and interlock designa- 3). tion (if required). Accessories for ac opera- Select Form — — Interlock DS303 A1A01EX A003 XF tion (rectifiers, resistors, auxiliary contac- Step 1 Step 3 tors, etc.) will automatically be supplied as Coil Number — Select Form — Interlock Step 2 separate items by selection of proper coil Step 1 Step 3 REFERENCES: number. See examples following. Coil Number Step 2 See page 5-4. HOW TO SELECT Step 1—Select Form (See page 5-9 for coil and interlock suffix) Blowout Coil 8hr 601-1000 volts Maximum 600 volts Rating Amp, Open (1250 Volts - refer to GE) DC NEMA Rating Poles ‡ Size Amp DS303 DS303 Dc NO NC Form Form † Pole Pole 1NO 10 A1A01DX. . . B1A01DX. . . 1NO 25 A1A01EX. . . B1A01EX. . . 1 25 1NC 10 A1B01XD. . . B1B01XD. . . 1NC 25 A1B01XE. . . B1B01XE. . . 1 NO 1NC 25 25 A1D01EE. . . B1D01EE. . . 1NO 50 A2A01FX. . . B2A01FX. . . 1NC 50 A2B01XF. . . B2B01XF. . . 2NO 10 A2C01DX. . . B2C01DX 2 50 2NO 25 A2C01EX. . . B2C01EX. . . 2NO 50 A2C01FX. . . B2C01FX. . . 1NO1NC 50 50 A2D01FF. . . B2D01FF. . . 1NO 50 A3A01FX. . . B3A01FX. . . 1 NO 100 A3A01GX. . . B3A01GX. . . 1 NC 100 A3B01XG. . . B3B01XG. . . 3 100 2 NO 100 A3C01GX. . . B3C01GX. . . 1 NO 1 NC 100 100 A3D01GG. . . B3D01GG. . . 2NO2NC 50 50 A3F01FF. . . B3F01FF. . . 2 NO 2 NC 100 100 A3F01GG. . . B3F01GG. . . 1 NO 150 A4A01HX. . . B4A01HX. . . 1 NC 150 A4B01XH. . . B4B01XH. . . 4 150 2 NO 150 A4C01HX. . . B4C01HX. . . 1 NO 1 NC 150 150 A4D01HH. . . B4D01HH. . . 1 NO 300 A5A01JX. . . B5A01JX. . . 1 NC 300 A5B01XJ. . . B5B01XJ 5 300 2 NO 300 A5C01JX. . . B5C01JX. . . 1 NO 1 NC 300 300 A5D01JJ. . . B5D01JJ. . . 600 Volts—Front-connected 600 Volts—Back-connected 6 600 1 NO 600 A6A01KX. . . A6A02KX. . . 7 900 1 NO 900 A7A01LX. . . A7A02LX. . . 750 Volts—Front-connected 750 Volts—Back-connected 6 600 1 NO 600 F6A01KX. . . F6A02KX. . . 7 900 1 NO 900 F7A01LX. . . F7A02LX. . . 600 Volts—Front-connected Mounted 600 Volts—Back-connected Mounted IC2800 Form IC2801 Form 8 1350* 1 NO 1500 Y107A. . . AX126G. . .** 9 2500 1 NO 2500 Y108A. . . AY142G. . .** 10 3250 1 NO 3250 Y130A. . . AY300G. . . 750 Volts—Front-connected Mounted 750 Volts—Back-connected Mounted IC2800 Form IC2801 Form 8 1350* 1 NO 1500 Y107AA. . . (1000 Volts) AX1. . .** 9 2500 1 NO 2500 Y108S. . . (1000 Volts) AY1XX. . .** 10 3250 1 NO 3250 Y130. . . AY300G. . . 6000 1 NO 6000 AY3XX (1000 Volts) AY301G (1000 Volts) * Non-NEMA rating 1500 amperes. † For purposes of contactor selection, 8-hr rating is synonymous with continuous rating. ‡ The function of the blowout coil is to move the arc upward at the same time the contacts are opening, thus forcing the arc away from the tips and into the arc chute at a faster rate. ** Back connected—Unmounted forms are IC28001178 and IC28001180. Data subject to change without notice CONTACTORS, RELAYS 5-4 Dc Contactors and Relays Heavy-duty Contactors HOW TO SELECT (Cont’d) Step 2—Add Coil Number‡ (See Page 5-9 for other voltages) Dc Operation** Ac Operation§ AC Operationf NEMA Poles 115/120 230/250 500 550 38 62/68 80 100 115 230 460 575 115 230 460 575 Size Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts Volts DS303 Forms A003 A002 A004 A005 A013l A016 A019 A021 A650 A651 A652 A653 A680 A681 A682 — 1-7 Listed � 102 103 107¶ 106 N/A N/A N/A N/A 650 651 652 653 ———— 8 Forms Listed 101 102 130 104 N/A N/A N/A N/A 650 651 652 653 ———— 9-10 Forms N/A 5 Not Available f Includes rectifier only. Resistor not used. ‡ Coil terminals on right. Left-side mounting available on request. ¶ For 500, 550 volts. § Includes rectifier and resistor, see page 5-7. � For 600 volts only. ** For other DC coil voltage, see page 5-9 l 38 volt form with 50% pickup voltage is A713 Step 3—Add Interlock Designation Drive Systems-S(A60000) 49-600 V Dc Interlock Arrangement 0-48 V Dc1 NEMA 0-600 V Ac Application Notes Size Left-hand Side Right-hand Side Designation l Designation l 1NO,1NC ... DH-Special XH 2NO ... Left-hand mounting DF-Special XF 1-5 2NC ... preferred DK-Special XK ... 1NO,1NC with coil terminals DJ-Special XJ-Special 6-7Q ... 2NO on right DG-Special XG-Special ... 2NC DL-Special XL-Special 2NO 2NO DM-Special XM-Special 2NC 2NC DS-Special XS-Special 2f,3C 1NO,1NC 2NC Coil Terminals DR-Special XR-Special 2NO 1NO,1NC on right DN-Special XN 4-7 2NO 2NC DP-Special XP 1 NO,1 NC 1 NO, 1 NC ... XT 2 NO, 2 NC . . . 2 NC contacts in ... W 4NO,4NC ... series required to ... S 8-10 ... 2NO,2NC insert series ... BW ... 4NO,4NC resistor ... BS f 2 NO pole Size 2 only. C 1 NO 2 NO pole Size 3. (Can accept only 1 interlock for 0-48v Dc) l Interlock less cover. .00 Two contacts equal one interlock. Order by description. 1 48-volt interlocks have special tips for making circuits at minimums of 500 millivolts and 0.018 amperes. Interlock contact arrangement—Inter- NC contact furthest from plunger head. energized 30 percent of the time but no lock contacts can be changed by the pur- Time rating of normally closed contac- more than 10 minutes continuously or 20 chaser from normally open to normally tors (IC2800 contactors)—coils of contac- minutes continuously if only once out of closed and vice versa, if necessary. To insure tors with normally closed poles are for in- three hours time. For continuous operation proper clearance on NO-NC forms, locate termittent duty only.The coils can be refer to company. REFERENCES RENEWAL PARTS Instruction Book DS303 A1, B1 .................................................GEF-4647 IC2800 Y107 ...................................................GEF-4606 DS303 .......................................................GEK-83756 A2,B2...........................................................4648 Y108............................................................4607 IC2800 Y107, Y108......................................GEH-751 A3,B3...........................................................4649 1178............................................................4324 Y130, A4,B4...........................................................4650 1180............................................................4343 1178, 1180, 1181 A5,B5...........................................................4651 Y106 ..................................................GEF-4126 Y106 ..............................................GEH-3057 A6 ................................................................6050 A7 ................................................................6051 Data subject to change without notice CONTACTORS, RELAYS Contactors and Relays 5-5 Heavy-duty Contactors Step 4—Specify Interference Interlocks (when necessary to interference-interlock two adjacent contactors) NEMA Interference Contactor Spacing (in.) Poles Size Interlock Center Line to Center Line 5 2NO 6923809G12 6 ⁄8 2 1 1 NO, 1 NC, 1 NO-1 NC 6923809G14 4 ⁄2 3 5 2NO 6923809G12 6 ⁄8 1 1 NO, 1 NC, 1 NO-1 NC 6923809G8 5 ⁄2 4 5 2NO 6923809G12 6 ⁄8 1 1 NO, 1 NC, 1 NO-1 NC 6923809G8 5 ⁄2 5 5 2NO 6923809G12 6 ⁄8 1 1NO 4969078G2-obsolete 6 ⁄2 6or7 1NO ... Refer to Company 8or9 NOTE: Mechanical interlocks are used as a supplement to electrical interlocks when required for additional protection. When mechanical interlocks are used, the electrical interlocks must be mounted on the outside of each contactor. Contactor spacing is horizontal distance between center lines of contactors. For additional combinations refer to Company. *When used with contactors containing base mounted suppressors, refer to factory. HOW TO SELECT INTERLOCKS FOR STOCKING OR FIELD MODIFICATION (A 1 B) Step A—Select Interlock Contact Blocks 48 V and Below Dc 49-600 V Dc, 0-600 V Ac Circuit Arrangement Contact Block Contact Block 2NO IC2956A205A IC2956A200A 2NC IC2956A205B IC2956A200B 1NO,1NC IC2956A205C IC2956A200C Step B—Select Mounting Kit (One required per contact block) Contactor Left-hand Mounting—Coil terminals on right (Preferred location) Right-hand Mounting—Coil terminals on left NEMA Size Main Poles Mounting Kit* Mounting Kit* All IC2956A202J IC2956A202K 1 1NO 1NC IC2956A202J IC2956A202K 2 1NO,1NC 2NO IC2956A202G IC2956A202H 2, 3 1NO 1NC IC2956A202C IC2956A202D 3 1NO,1NC 1NO 1NC IC2956A202E IC2956A202F 4, 5 1NO,1NC 2NO IC2956A202G IC2956A202H 4, 5 1NO IC2956A203L IC2956A203L 6, 7 *For interlock blocks on both sides, refer to company. Data subject to change without notice CONTACTORS, RELAYS 5-6 Contactors and Relays Heavy-duty Contactors CONTACTOR RATINGS (NORMALLY OPEN POLES ONLY) Make Amperes Carry (open ratings in Amperes) Interrupt Amperes of NEMA 600 or 1000 Volts Dc Dc Motor Circuit 600 or 1000 Volts Dc‡ Size 8-hr† 60-min 30-min 10-min NEMA Maximum 600 Volts 1000 Volts 25 30 38 50 100 250 250 100 1 50 67 75 100 200 500 500 200 2 100 133 150 180 400 1000 1000 400 3 150 200 225 300 600 1500 1500 600 4 300 400 450 600 1200 3000 3000 1200 5 600 800 900 1200 2400 6000 6000 . . . 6 900 1200 1350 1800 3600 9000 9000 . . . 7 1350* 2000 2250 3000 5400 9000 Four times . . . 8 2500 3350 3750 5000 10000 15000 blowout . . . 9 3250 . . . . . . . . . NA 15000 rating . . . 10 * Non-NEMA rating 1500 amperes. † For purposes of contactor selection, 8-hr rating is synonymous with continuous rating. ‡ NEMA standard is 4 times 8-hr rating at 600-volts maximum. Interlock ratings—Same as for relays, page 5-20. APPLICATION (MOTOR AND RESISTIVE LOADS)§ Motor Horsepower Resistive Heating Loads NEMA Crane Duty: 30 Min, 60 Min kW Reduced-voltage Starting Line Contactor Size Mill Duty: 60 Min 115/120 V 230/240/250 V 500/550 V 230/240/250 V 115/120 V 230 V 3 5 5 7.5 2.5 5.0 1 5 10 20 15 5.2 10.4 2 10 25 50 35 10.4 20.8 3 20 40 75 55 15.5 31.0 4 40 75 150 110 31.0 62.0 5 75 150 300 225 62.0 124.0 6 110 225 450 330 . . . . . . 7 175 350 700 500 . . . . . . 8 300 600 1200 1000 . . . . . . 9 § For guidance only. Motor full-load amperes must not exceed contactor rating. Horsepower ratings—Select contactors on the basis of highest horsepower of which a motor is rated (or operated if operated at a service-factor rating). Intermediate accelerating contactors—Select units such that the 8-hour rating will not be less than 0.25 times the accelerating peak. CONTROL POWER REQUIREMENTS Current Requirements-Amperes Burden-Volt Amperes§ Number NEMA Poles of Volts Dc Volts Ac Size Contactors 115/120 230/240/250 500 550 115 230 460 1 NO 1 0.133 0.076 0.069 0.071 20.0 18.5 26.0 1 NC 1 0.133 0.076 0.069 0.071 20.0 18.5 26.0 1&2 1 NO-1 NC 1 0.133 0.076 0.069 0.071 20.0 18.5 26.0 2 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0 2 1 NO 1 0.135 0.083 0.038 0.028 33.0 34.5 38.8 1 NC 1 0.135 0.083 0.038 0.028 33.0 34.5 38.8 3 1 NO-1 NC 1 0.135 0.083 0.038 0.028 33.0 34.5 38.8 2 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0 1 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0 1 NC 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0 4&5 2 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0 1 NO-1 NC 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0 1 NO 1 48 watts 6&7 1 NO 1 500 watts pickup, 180 watts holding 8&9 § Volt-ampere burden includes power requirements of rectifier, series resistor. Data subject to change without notice CONTACTORS, RELAYS Contactors and Relays 5-7 Dc Contactors-General Information ACCESSORIES (Supplied for separate mounting. See below for dimensions) NEMA Sizes 1-5 (DS303 only. Included in contactor price) NEMA Series Resistor, Poles Volts Rectifier Size Cat. No. 68A7004- 500 dc A50E4000DA-TH . . . 550 dc A50E5000DA-TH . . . 1NO 115 ac, 25, 50, 60 Hertz-“A650” A50E200DA-TH IC3500A403C2 1NC 1&2 230 ac, 25, 50, 60 Hertz-“A651” A50E500DA-TH IC3500A403C6 1NO,1NC 460 ac, 25, 50, 60 Hertz-“A652” A50E4000DA-TH IC3500A403C5 575 ac, 25, 50, 60 Hertz-“A653” A50E6500DA-TH IC3500A403C8 115 ac, 25, 50, 60 Hertz-“A650” A50E25DA-TH IC3500A403C2 230 ac, 25, 50, 60 Hertz-“A651” A50E150DA-TH IC3500A403C6 2NO 2&3 460 ac, 25, 50, 60 Hertz-“A652” A50E750DA-TH IC3500A403C5 575 ac, 25, 50, 60 Hertz-“A653” A50E750DA-TH IC3500A403C8 115 ac, 25, 50, 60 Hertz-“A650” A50E150DA-TH IC3500A403C2 1NO 230 ac, 25, 50, 60 Hertz-“A651” A50E500DA-TH IC3500A403C6 1NC 3 460 ac, 25, 50, 60 Hertz-“A652” A50E2000DA-TH IC3500A403C5 1NO,1NC 575 ac, 25, 50, 60 Hertz-“A653” . . . IC3500A403C8 1NO 115 ac, 25, 50, 60 Hertz-“A650” A50E25DA-TH IC3500A403C2 1NC 230 ac, 25, 50, 60 Hertz-“A651” A50E150DA-TH IC3500A403C6 4&5 1NO,1NC 460 ac, 25, 50, 60 Hertz-“A652” A50E750DA-TH IC3500A403C5 2NO 575 ac, 25, 50, 60 Hertz-“A653” A50E750DA-TH IC3500A403C8 NEMA Sizes 6-9 (Included in contactor price) Rectifier‡ Series Resistor Holding Resistor Aux. Contactorl Contactor Volts Size Cat. No. Qty Cat. No. Qty Cat. No. 68A7004 Qty CR2810 Qty Ac Operation—60 Hertz 115 IC3500A403C2 1 ... ... ... ... A14AC2 1 230 IC3500A403C6 1 IC9033E2S8¶ 1 ... ... A14AC3 1 6&7 460 IC3500A403C5 1 IC9033A2Y5§ 1 ... ... A14AC4 1 115 IC3500A403C2 1 ... ... A100G125EA-TH 1 A14AC2 1 230* IC3500A403C6 1 ... ... A100G500EA-TH 1 A14AC3 1 8 460* IC3500A403C5 1 68A7004-A100G100EA-TH 1 A100G1500EA-TH 1 A14AC4 1 A100G10EA-TH 1† 115 IC3500A403C2 1 ... ... A14C2 1 A100G25EA-TH 1† A100G75EA-TH 2† 230* IC3500A403C6 1 ... ... A14C3 1 9 A100G10EA-TH 1† A100G250EA-TH 2† 460* IC3500A403C5 1 ... ... A14C4 1 A100E150EA-TH 1† Dc Operation 115/120 ... ... ... ... A100G100EA-TH 1 ... ... 8* 230/250 ... ... ... ... A100G500EA-TH 1 ... ... 8* 500/550 ... ... ... ... A100G1500EA-TH 1 ... ... 8* 115/120 ... ... ... ... A100G25EA-TH 2 ... ... 9* 230/250 ... ... ... ... A100G100EA-TH 2 ... ... 9* 500 ... ... ... ... A100G350EA-TH 2 ... ... 9* 550 ... ... ... ... A100G500EA-TH 2 ... ... 9* * Two normally closed interlock circuits needed on Size 8 ¶ Set slider at 250 ohms. ‡ Rectifiers have built-in transient protection. and 9 contactors to insert holding resistor in coil circuit. § Tap at 750 ohms. l Auxiliary contactor used to open both sides of rectifier. † Resistors connected in series. ACCESSORY DIMENSIONS (In inches) Depth Resistor Stud Stud Resistor Front Form Length Dia B Dia A of Base 3 5 5 1 IC9033A2, E2 9 ⁄8 ⁄16 8 ⁄8 2 ⁄16 68A7004A50E 3 1 3 1 B50E 7 ⁄4 ⁄4 6 ⁄4 1 ⁄8 68A7004A100G 3 1 3 1 B100G 8 ⁄4 ⁄4 9 ⁄4 1 ⁄8 Fig. 4A. Mounting requirements for resistor Fig. 4C. CR2810A14AC Auxil- Fig. 4B. Rectifiers IC3500A403C iary Contactor Data subject to change without notice CONTACTORS, RELAYS 5-8 Dc Contactors and Relays Heavy-duty Contactors WIRING SYMBOLS (FRONT VIEW) TYPICAL DIAGRAM ARC CLEARANCES Minimum arc clearances in front and above contactor MOUNTING DIMENSIONS arc chutes when used on 1000-volt maximum motor circuits) NEMA Size 1-5 6-7 8-9 Insulated surface 0.5’’ 1.8’’ 4.0’’ Fig. 5. Fig. 6. Fig. 7. Non-insulated surface 1.0’’ 3.0’’ 8.0’’ *Interlocks shown are left-hand mounted. Coil terminals on right. * Insulation 1/8-inch electrical-class polyester insulation or equivalent. Dimensions in Inches Weight NEMA IC303A or Figure Mounting Base Approx. Size IC303B Form No. A B C D E F G H J Depth Lbs. Thickness Hole diameter 1 1 3 5 1 11 1 11 1 1 13 —1A01DX, EX 53 ⁄4 2 ⁄4 5 ⁄8 1 ⁄8 ⁄4 2 ⁄32 3 ⁄2 ⁄16 —6 ⁄2 ⁄16 ⁄64 4 1 1 5 1 1 11 1 1 3 13 —1B01XD, XE 63 ⁄4 2 ⁄4 8 ⁄8 ⁄4 ⁄4 2 ⁄32 6 ⁄2 —— 6 ⁄2 ⁄32 ⁄64 4 1 1 1 3 5 1 11 1 1 3 13 —1D01EE 63 ⁄4 2 ⁄4 9 ⁄4 1 ⁄8 ⁄4 2 ⁄32 6 ⁄2 —— 6 ⁄2 ⁄32 ⁄64 6 1 1 3 5 1 11 1 11 1 1 13 —2A01EX, FX 53 ⁄4 2 ⁄4 5 ⁄8 1 ⁄8 ⁄4 2 ⁄32 3 ⁄2 ⁄16 —6 ⁄2 ⁄16 ⁄64 4 1 1 5 1 1 11 1 1 3 13 —2B01XF 63 ⁄4 2 ⁄4 8 ⁄8 ⁄4 ⁄4 2 ⁄32 6 ⁄2 —— 6 ⁄2 ⁄32 ⁄64 4 2 3 1 3 3 1 5 1 7 5 1 5 —2C01DX, EX, FX 64 ⁄4 4 ⁄2 7 ⁄4 2 ⁄8 ⁄444 ⁄8 1 ⁄16 1 ⁄8 9 ⁄8 ⁄8 ⁄16 8 1 3 3 5 1 11 1 1 3 13 —2D01FF 63 ⁄4 2 ⁄4 9 ⁄4 1 ⁄8 ⁄4 2 ⁄32 6 ⁄2 —— 6 ⁄2 ⁄32 ⁄64 6 3 5 1 5 1 1 1 1 1 13 —3A01FX, GX 53 ⁄4 2 ⁄8 6 ⁄2 1 ⁄8 ⁄4 1 ⁄2 4 ⁄2 ⁄4 —8 ⁄8 ⁄64 6 3 5 1 11 1 1 17 1 13 —3B01XG 63 ⁄4 2 ⁄8 10 ⁄2 ⁄32 ⁄4 1 ⁄2 8 ⁄32 —— 8 ⁄8 ⁄64 6 3 1 3 3 1 5 1 7 5 1 5 —3C01GX 54 ⁄4 4 ⁄2 7 ⁄4 2 ⁄8 ⁄444 ⁄8 1 ⁄16 1 ⁄8 9 ⁄8 ⁄8 ⁄16 15 3 3 5 25 5 1 1 17 1 13 —3D01GG 63 ⁄4 2 ⁄8 11 ⁄32 1 ⁄8 ⁄4 1 ⁄2 8 ⁄32 —— 8 ⁄8 ⁄64 12 1 13 5 1 —3F01FF, GG 6— 6 ⁄8 12 ⁄16 9 ⁄8 ⁄8 24 3 1 3 1 1 5 1 7 7 1 5 —4A01HX 54 ⁄4 4 ⁄2 8 ⁄4 3 ⁄16 ⁄445 ⁄16 1 ⁄16 1 ⁄8 10 ⁄8 ⁄8 ⁄16 16 3 1 1 11 1 9 7 1 5 —4B01XH 64 ⁄4 4 ⁄2 13 ⁄2 1 ⁄16 ⁄448 ⁄16 —— 10 ⁄8 ⁄8 ⁄16 16 4 5 1 3 13 7 23 15 7 1 5 —4C01HX 7— 5 ⁄8 9 ⁄4 1 ⁄4 2 ⁄16 1 ⁄8 6 ⁄32 ⁄16 —10 ⁄8 ⁄8 ⁄16 21 3 1 3 1 1 1 7 1 5 —4D01HH 64 ⁄4 4 ⁄2 15 ⁄4 3 ⁄4 ⁄449 ⁄4 —— 10 ⁄8 ⁄8 ⁄16 20 3 1 3 1 1 5 1 7 7 1 5 —5A01JX 54 ⁄4 4 ⁄2 8 ⁄4 3 ⁄16 ⁄445 ⁄16 1 ⁄16 1 ⁄8 10 ⁄8 ⁄8 ⁄16 16 3 1 1 11 1 9 7 1 5 —5B01XJ 64 ⁄4 4 ⁄2 13 ⁄2 1 ⁄16 ⁄448 ⁄16 —— 10 ⁄8 ⁄8 ⁄16 16 5 5 1 3 13 7 23 15 7 1 5 —5C01JX 7— 5 ⁄8 9 ⁄4 1 ⁄4 2 ⁄16 1 ⁄8 6 ⁄32 ⁄16 —10 ⁄8 ⁄8 ⁄16 21 3 1 3 1 1 1 7 1 5 —5D01JJ 64 ⁄4 4 ⁄2 15 ⁄4 3 ⁄4 ⁄449 ⁄4 —— 10 ⁄8 ⁄8 ⁄16 20 3 1 11 3 5 7 —6A01KX 7— 5 ⁄8 16 ⁄2 ⁄16415 — —12 ⁄16 1 ⁄16 ⁄16 37 6 3 1 11 3 5 7 —7A01LX 7— 5 ⁄8 16 ⁄2 ⁄16415 — —12 ⁄16 1 ⁄16 ⁄16 37 7 Data subject to change without notice CONTACTORS, RELAYS Dc Contactors and Relays 5-9 MOUNTING DIMENSIONS Size 8, 9, and 10 IC2800 IC2800 A B Depth Weight Depth Weight Form Form 1 3 13 11 Y107 5 ⁄2 4 ⁄8 11 ⁄32 150 1178 9 ⁄32 130 5 31 29 Y108 75 ⁄8 12 ⁄32 170 1180 10 ⁄32 150 5 31 29 Y130 75 ⁄8 12 ⁄32 180 1181 10 ⁄32 160 The 1178, 1180 and 1181 contactors are shipped unassembled. Fig. 9. Back-connected IC2801—DIMENSIONS All forms—refer to Company Fig. 8. Unit-mounted Cross Reference Data IC2800 To DS303 Contactors† COIL DATA* DS303 IC2800 1607 1612–14 1617 Coil All 1170 1172 1174 1176 EA600 1608 1620–23 1618 Volts Forms Y100 Y101 Y102 Y103 EA900 1609 1625 1619 230/250 A002 2 2 2 2222 2 115/120 A003 3 3 3 3333 3 475/500 A004 37 4 4 5555 5 550 A005 38 5 5 6676 6 600 A006 19 5 5 6 6 20 6 6 6 A007 17 54 26 20 12 A008 12 18 18 16 16 21 38 18/20 A009 30 6 30 23 16 40 24 A010 18 13 15 9 19 11 11 41 28 A011 26 20 25 27 18 42 32 A012 10 10 9 12 12 12 9 7 38 A013 32 20 35 15 48/50 A014 14 9 6 8 9 14 16 10 55/60 A015 44 56 62/68 A016 9 14 16 4464 11 74 A017 35 78 A018 15 11 7847 12 80 A01976 90 A020 13 7 22 14 37 100 A021 31 23 22 9 27 13 135 A022 25 29 150 A023 81110 15 17 165 A024 30 180/190 A025 43 21 11 8 200 A026 12 275 A027 20 28 21 55 27 19 17 300 A028 50 12 13 10 24 10 4 350 A029 40 380 A030 8 440 A031 39 26 17 18 23 19 AUXILIARY INTERLOCKS* RIGHT HAND MOUNTING LEFT HAND MOUNTING (Preferred) DS303 IC2800 DS303 IC2800 Y100 1170 Y100 1170 Contacts Contacts All All EA600 All All EA600 to to to to Forms 1600’s EA900 Forms 1600’s EA900 Y104 1177 Y104 1177 1NO/1NC XJ J E E E 1NO/1NC XH H B B B 2NO XG C or J F F F 2NO XF B or F C C C 2NC XL E or L G G G 2NC XK D or K D D D * For other coil # or interlock forms, refer to company. Data subject to change without notice † See GEP-345D, page 5-3. CONTACTORS, RELAYS 5-10 Dc Contactors and Relays Replacement General Duty and Mill Duty Contactors HOW TO ORDER Order by complete IC number including form letter, coil number, and interlock des- ignation or by description if new applica- tion. MOUNTING DIMENSIONS (FRONT VIEW) Fig. 10. IC28001607 Fig. 11. IC2800Y105 WHERE TO USE WHERE TO USE Use for general dc industrial control such Use for crane, metal-rolling mill and all as machine-tool control, textile-machinery other heavy industry dc control. Contactors control and similar applications. Contactors are available mounted or unmounted in ei- have a steel base insulated from the electri- ther front- or back-connected forms. Use cal circuits. They can be mounted on either unit-mounted, front-connected form for metal or insulating panels. mounting on metal or insulating panels. The 25 and 50 amp NO contactors above Use unmounted back-connected form for are to be used where exact replacement of assembly directly on your own insulating the obsolete line of contactors is required. panel. The contactor uses a non-asbestos arc chute Select sizes according to motor horse- and will provide make/interrupt ratings of 4 power and time rating. Use forms with blow- times the 8-hour rating of the NO pole. No out rating for dc power interruption. other pole configurations are available. See DS303, page 5-2. Time rating of normally closed contac- tors—Coils of contactors with normally closed poles are for intermittent duty only. The coils can be energized 30 percent of the Fig. 12. time but not more than 10 minutes contin- uously or 20 minutes continuously if only once out of three hours time. For continu- ous operation refer to company. REPLACEMENT GENERAL DUTY AND MILL DUTY CONTACTORS IC2800 Available Coil # Available Form* Suffix** Interlock Suffix** 1607CD F, G, H CE 2, 3, 52, 55 F, G, H CF F, G, H 1617CF OBS-Use DS303 B thru H CE OBS-Use DS303 B thru H CC OBS-Use DS303 B thru H CB OBS-Use DS303 B thru H Y105A, AE 26, 30, 33 B thru G Y106A, AC 2 thru 38 B thru G 1173N† 2 thru 40 B thru G 1175R† 2 thru 38 B thru G **Refer to company for other suffixes. †Back connected. Fig. 13. Dimensions in Inches Approx Fig. Mounting Foot IC2800 Form Wt in No. A B C D E F G H Depth Hole Lb Thickness Diam 1 5 1 5 9 13 1 1 1 1 1607CD, CE, CF 2 ⁄2 12 3 ⁄32 2 ⁄4 5 ⁄16 1 ⁄16 ⁄32 13 ⁄204 ⁄8 ⁄16 ⁄4 1 21 5 5 7 5 1 1 1 5 3 1 1617CB, CC, CE, CF 3 ⁄2 12 3 ⁄32 2 ⁄8 6 ⁄16 1 ⁄16 ⁄16 1 ⁄2 4 ⁄2 ⁄4 5 ⁄8 ⁄32 ⁄4 3 1 11 3 11 9 7 Y105 23 13 6 ⁄8 16 ⁄2 512 ⁄16 ⁄4 7 ⁄16 1 ⁄16 ⁄16 3 11 13 9 5 Y106 48 13 8 ⁄8 20 7 16 ⁄16110 ⁄16 1 ⁄16 ⁄8 1 1 3 3 3 1173N 15 12 5 ⁄4 4 ⁄4 12 ⁄4 6 ⁄4 overall depth 10 ⁄4 5 3 5 3 5 1175R 30 12 5 ⁄8 5 ⁄8 17 ⁄8 8 ⁄8 13 ⁄8 Data subject to change without notice CONTACTORS, RELAYS Special-purpose Contactors 5-11 IC2800C300 WHERE TO USE For use in 1000-volt dc circuits such as are found in oil well drilling, material handling, crane control, uninterruptible power sup- plies, and transportation equipment. These contactors are used in equipments where it is desired to reduce current ratings by going to higher voltages. These contactors are spe- cially designed for applications with low make and interrupting requirements, with- out jogging. Select contactors ratings on basis of dc current carrying capacities and interlock re- quirements. Overcurrent power circuit. A special form Fig. 14. IC2800C300A Fig. 15. IC2800C300E with manual latch mechanism (C300C) is available with an overcurrent power circuit to prevent the contactor from opening under a heavy overload current in excess of the designed interruption rating. Manual Latch. The C300E form utilizes a Step 1-Select Form manual operator to close and latch the Interlocks power contacts if control power is not avail- 8-hr Open IC2800 Poles 49-600 Volts Rating (Amp)‡ Form able to operate the coil. This will eliminate Dc† the need for the addition of a knife switch 1250 1NO 1NO, 1NC C300A*E where applicable codes or standards require 1250 1NO 2NO, 2NC C300A*J manual operation in the event of loss of 1250 1NO 2NO, 2NC C300C*J control power or coil failure. 1250 1NO 2NO, 2NC C300E*J ‡ For purposes of contactor selection, 8-hr rating is * Insert coil number † Designation: synonymous with continuous rating. 37 volts dc—121 2-circuit form is front accessible References: 74 volts dc—122 4-circuit form is side accessible Instruction Book...........................................GEH4468 108 volts dc—123 Other contact arrangements available on Renewal Parts .................................................GEF4605 125 volts dc—124 request. 250 volts dc—125 NOTES: Max make current—5000 amps; Max break current—2000 amps at 500 volts; Max interrupting capacity—1000 kW. OUTLINE DRAWING Fig. 16. IC2800C300 Data subject to change without notice CONTACTORS, RELAYS 5-12 Special Purpose Contactors IC2800B310, A501, Y109, Y110 WHERE TO USE Normally Open IC2800B310 contactors are used where time-delay opening of power circuits such as dc motor loads and resistor loads are re- quired. They are normally open, single-pole contactors constructed with copper-jack- eted coils which provide time delay on drop- out. The contactors are front-connected and can be mounted on either insulating or noninsulating panels. Normally Closed Fig. 18. IC2800A501 Fig. 17. IC2800B310 Used to short-out resistance steps in start- ing dc motors. Contactors are normally HOW TO SELECT—NORMALLY OPEN closed, without blowouts, and are not de- signed to interrupt power. Step 1—Select Form Pick-up is instantaneous. Time-delay 8-hr Open Blowout IC2800 dropout results from use of a copper-jack- Rating (Amp) Poles Rating Form eted coil and adjustment of this time delay is 600 V Max* (Amp) obtained by using a non-magnetic armature 2 B310N-Obsolete 5 B310L shim. Time delay of IC2800A501 contactors 1NO 10 B310K 50 can be adjusted over a narrow range by the 25 B310J armature spring. Time delay of IC2800Y109 50 B310H contactor can be adjusted over a wide range *For purposes of contactor selection, 8-hr rating is synonymous with continuous rating. by a sliding shim. Mount contactors on either metal or in- Step 2—Add Time-delay and Voltage Designation sulating panels. Make connections from the (Select time delay so that the desired delay falls in the middle of the time-delay range, as nearly as front. possible) Enclosed rating—0.9 times the 8-hour, Time Delay in Seconds Designation open-ampere rating of the contactor. With Dc Operation Without Two-circuit Interlock 115/120 V 230/240/250 V 500 V 550/600 V Step 3—Add Interlock Designation Interlocks 0.4—0.6 0.3—0.45 X203 X202 X204 X205 Number Designation 0.5—0.8 0.4—0.6 R203 R202 R204 R205 Interlock Circuits 0.75—1.25 0.6—0.9 B203 B202 B204 B205 None ... 1.0—1.4 0.75—1.1 F203 F202 F204 F205 2NO D 1.3—1.6 1.0—1.2 E203 E202 E204 E205 1NO,1NC C 2NC B HOW TO SELECT—NORMALLY CLOSED Step 1—Select Form 8-hr Open Time Intermittent Coil Continuous Coil Interlock Rating (Amp) Poles Delay Volts IC2800 IC2800 Arrangement † (Seconds) Form Form 2NO A501A*23D A501A*53D 115/120 1 NO, 1 NC A501A*23C A501A*53C 2NC A501A*23B A501A*53B 2NO A501A*24D A501A*54D 230/240/250 1 NO, 1 NC A501A*24C A501A*54C 2NC A501A*24B A501A*54B 1 NC See Step 2 100 2NO A501A*27D A501A*57D 500 1 NO, 1 NC A501A*27C A501A*57C 2NC A501A*27B A501A*57B 2NO A501A*28D A501A*58D 1NO,1NC A501A*28C A501A*58C 550 2NC A501A*28B A501A*58B 115/120 2 NO Y109B2 1NO,1NC Y109A2 ACCESSORIES Adjustable 230/240/250 2 NO Y109B3 1NC 150 0.75–3.0 1NO,1NC Y109A3 See page 5-13. 500 or 550 2 NO Y109B4 1NO,1NC Y109A4 TIME-DELAY DESIGNATION* 115/120 2 NO Y110*4 1NO,1NC Y110*4 See Step 2 and 3 on page 5-13. 230/240/250 2 NO Y110*2 1 NC See Step 3 300 1 NO, NC Y110*2 † For purposes of contactor selection, 8-hr rating 500 or 550 2 NO Y110*13 is synonymous with continuous rating. 1NO,1NC Y110*13 Data subject to change without notice CONTACTORS, RELAYS Special Purpose Contactors 5-13 IC2800A501, Y109, Y110 Step 2—Insert Time-delay Designation—A501 only Insert Time-delay Designation—Y110 only Timing Range in Seconds Timing Range in Seconds Designation Intermittent Coil Continuous Coil Operation Designation Intermittent Coil Interlock Operation (Requires holding resistor) Operation 0.34—0.59 0.17—0.295 Y-Obsolete 0.7—0.9 1 NO, 1 NC C-Obsolete 0.48—0.88 0.24—0.44 X-Obsolete 0.8—1.0 1 NO, 1 NC D 0.63—1.30 0.32—0.65 R 0.8—1.0 2 NO E-Obsolete 1.05—2.14 0.53—1.07 B 1.2—3.0 1 NO, 1 NC F 1.86—3.24 0.93—1.62 F 1.2—3.0 2 NO G-Obsolete 2.60—4.80 1.30—2.40 C-Obsolete Interlock contacts—Interlock contacts can be changed by the Purchaser from normally 5.80—7.60 2.90—3.80 E-Obsolete open to normally closed, and vice versa. 6.50—8.50 3.25—4.25 D-Obsolete Interlock contact ratings—Refer to page 5-20. MOUNTING DIMENSIONS MOUNTING DIMENSIONS Dimensions in Inches IC2800 Form A B C D E F Depth 1 5 1 1 1 Y109 8 ⁄2 4 ⁄8 3 ⁄2 ⁄261 6 ⁄8 1 1 3 3 1 1 1 Y110 10 ⁄2 6 ⁄8 4 ⁄4 ⁄4 7 ⁄4 1 ⁄4 7 ⁄8 Fig. 21. IC2800Y109 and Y110 Fig. 19. IC2800B310 Fig. 20. IC2800A501 HOW TO ORDER Order by complete IC number including Example: To order a 300-amp, 230-volt dc form, time delay designation and coil num- Example: To order 100-amp, 550-volt dc con- contactor, two NO interlocks, a time delay of 1.2 ber, and interlock designation. trol continuously rated, two NC interlocks and seconds, specify contactor IC2800 Y110G4 Example: To order a 50-amp, 600-volt dc con- time delay of 1.0 seconds, specify contactor as tactor with 115-volt dc control, two NO inter- IC2800 Y110 G 4 follows: locks, a blowout rating of 10 amp and a time Voltage delay of 0.5 seconds, specify contactor IC2800A501A F 58 B Select Form Step 1 IC2800B310KR203D. Step 1 — Interlock letter Time-delay IC2800 B310K R203 D and Interlock — Coil number in- Step 2 cluding holding resistor Select Form — Interlock — Time-delay letter Step 1 Step 3 — — — — Basic contactor form Time-delay and Coil Number Step 2 ACCESSORIES—Supplied for Separate mounting. See page 5-7 for References: dimensions. Instruction Book Holding Resistor (A501A Continuous duty) Resistor Cat. No. IC2800B310 ..................................................GEH 3098 Volts 68A7004 IC2800A501 ..................................................GEH 3087 IC2800Y109, Y110.........................................GEH 3088 115/120 A50E250DA-TH 230/240/250 A50E1000DA-TH Renewal Parts 500 A50E4000DA-TH 550 A50E5000DA-TH IC2800 B310 ..................................................GEF 4179 Continuous duty—For continuous duty of IC2800A501A, one NC interlock must be used to place holding resistor in circuit A501..................................................GEF 4130 Y109,110............................................GEF 4603 after pickup. Data subject to change without notice CONTACTORS, RELAYS 5-14 Field Contactors IC2812B107, B207, MOTOR FIELD CONTACTORS DESCRIPTION The synchronous-motor field contactor is The field contactors are of the heavy-duty, available in ratings, from 100 to 265 amps. clapper-type design for industrial use. The The field contactor has two normally open contactors have proved in the field that they poles for applying and removing field exci- give long life under all conditions of oper- tation and one normally closed pole for in- ation and service. The correct amount of serting resistance in the field for discharge. wipe keeps the contact tips clean which pro- These extremely fast-acting contactors are vides positive electrical contact when the designed specifically for synchronous-motor poles are closed. Blowout coils are con- applications. The normally open and closed nected to each pole to quickly extinguish poles have the correct amount of overlap to the arc within the arc chute. Arc chutes are assure against the build-up of high induced non-asbestos and can easily be removed to voltages in the motor field when excitation inspect contact tips. Fig. 22. 100-amp field contactor is removed. Step 1—Select Form Dc Power Electrical IC2812 Coil Voltage 8-hr Open Max Interlocks Form Rating† Volts Ac 3NOand3NC B107DA 250 100 Dc* 3NOand3NC B107DB. . . None* B207AC. . . Ac 1NOand1NC B207AC. . .A 600 or 2NOand2NC B207AC. . .B 265 Dc* 3NOand3NC B207AC. . .C 4NOand2NC B207AC. . .D * Dc operation—When specifying form, allow one additional normally closed interlock above circuit requirements. This interlock is required to insert holding resistor in series with coil. Price includes resistor. † For purposes of contactor selection, 8-hr rating is synonymous with continuous rating. Fig. 23. 265-amp field contactor HOW TO ORDER B107, B207 1. Specify form according to control volt- Step 2—Add Coil Number age, frequency and interlocks. IC2812 Form 2. Add coil number. For other voltages, re- Volts Frequency B107DA B107DB B207AC fer to company. 110/115 60 Hertz 2 ... 1 220/230 60 Hertz 3 ... 83 440/460 60 Hertz 4 ... 50 ACCESSORIES—Supplied for 550/575 60 Hertz 5 ... 4 separate mounting 115/125 Dc ... 2 21 230/250 Dc ... 3 20 See page 5-7 for dimensions. 48 Dc ... 4 39 Holding Resistor IC2812B107 IC2812B207 Volts Resistor Resistor Dc PANEL LAYOUT DIMENSIONS 68A7004 68A7004 115/125 B100G250KA-TH‡ A100G150EA-TH 230/250 B100G750KA-TH§ A100G500EA-TH ‡ Set slider at 36 ohms. § Set slider at 125 ohms. REFERENCES: A B C D E F Depth* Publications 5 1 5 7 B107 12 6 11 ⁄8 12 ⁄4 3 ⁄16 7 ⁄8 Field contactor panels 1 1 17 B207 17 ⁄2 15 ⁄2 13 15 6 1 19 ⁄16 100-amp Field Contactor Instructions ............................GEH-3063 * Includes extensions back of base. 265-amp Field Contactor Instructions ............................GEH-3090 Renewal Parts Bulletin IC2812B107.............................GEF-4156 IC2812B207.............................GEF-4339 Outline Drawings IC2812B107 Field Contactor ....117A7961 Fig. 24. IC2812B207 Field Contactor ....151A5871 Data subject to change without notice CONTACTORS, RELAYS Exciter/Generator Field Controller 5-15 IC2812, B307, B407, B507 mounted. These controllers include auxil- DESCRIPTION APPLICATION iary relays for remote functions, an anti- The IC2812 field controllers are for the Determine the Amperes of the Field at pump circuit and close and trip push-but- Full Load (AFFL) rating. This AFFL rating application and removal of dc power from tons mounted on the front cover. an exciter or generator field circuit. The should be on the nameplate of the machine The anti-pump circuit ensures that the (exciter or generator) on which the field controller consists of two Normally Open contactor operates only once during the (NO) power circuits and one Normally breaker is to be used. This AFFL rating de- close operation. A total of 11 auxiliary cir- termines which contator is applicable. Closed (NC) power circuit and associated cuits are available for interlocking. All de- control and protective relaying. The 2 NO vices are wired to a common terminal CONSTRUCTION contacts apply dc power to the machine board. field. The NC contact inserts a resistor in The controller is a non-drawout type, with the field circuit to discharge the energy a padlock feature to lock the contactor in when the field power circuit is opened. The the open position. The 900 amp and 2500 contacts are arranged in a make-before amp controllers are incorporated into an break configuration. The contactor is me- angle iron frame assembly with front cover chanically latched when closed, and can be which is designed for mounting inside a electrically or mechanically tripped. cubicle. The 265 amp assembly is based Dc Power Electrical IC2812 Operation 8-hr Open Max Amp Max Interlocks Form Rating† Interrupt Volts Ac 1000 250 5NO-7NC B507 265 Dc* Ac 3000 375 5NO-7NC B307 900 Dc* Ac 9000 500 5NO-7NC B407 2500 Dc* *Dc operation—When specifying form, allow one additional normally closed interlock above circuit requirements. This interlock is required to insert holding resistor in series with coil. Price includes resistor. †For purpose of contactor selection, 8-hr rating is synonymous with continuous rating. DIMENSIONS: Form Width Height Depth‡ 3 3 5 B307 32 ⁄4 27 ⁄8 26 ⁄8 3 3 5 B407 32 ⁄4 38 ⁄8 29 ⁄8 15 1 B507 35 ⁄16 24 16 ⁄8 ‡Including bus extention, rear of base. For other mount- ing dimensions, refer to company. HOW TO ORDER 1. Specify form and provide coil voltage, interlock arrangement required. 2. Provide generator nameplate data. Fig. 25. IC2812B407 References: Instruction Books B307 ...............GEK 83786 B407 ...............GEK 83787 B507 ...............GEK 83785 Data subject to change without notice CONTRACTORS, RELAYS 5-16 General Purpose Relays IC2820A100, A101, A200 HOW TO SELECT ASSEMBLED RELAYS Step 1—Select Form—General Duty or Heavy Duty Contact Arrangement Unit-mounted (Open) Number of IC2820 NO NC Contacts Form* General-duty, 0-48 Volts Dc 01 A200B. . .CB 1 10 A200B. . .CC 02 A200B. . .CD 11 A200B. . .CE 2 20 A200B. . .CF 22 A200B. . .CG 31 A200B. . .CH 4 40 A200B. . .CJ General-duty, 49-600 Volts Dc Fig. 26. IC2820A200 General-duty relay 01 A200B. . .B 1 10 A200B. . .C 02 A200B. . .D 11 A200B. . .E 2 20 A200B. . .F 22 A200B. . .J 31 A200B. . .K 4 40 A200B. . .L Heavy-duty, 0-48 Volts Dc 01 A100BB. . .JW 1 10 A100BB. . .JU 02 A100BB. . .JT 11 A100BB. . .JF 2 20 A100BB. . .JV 04 A100BB. . .HB 13 A100BB. . .HC 22 A100BB. . .HE 4 31 A100BB. . .HK 40 A100BB. . .HU Heavy-duty, 49-600 Volts Dc 01 A100AB. . .B 01 A100BB. . .B Fig. 27. IC2820A100 Heavy-duty relay 1 10 A100AB. . .C 10 A100BB. . .C 02 A100AB. . .D WHERE TO USE 02 A100BB. . .D 11 A100AB. . .E Use for general-purpose relaying, under- 2 11 A100BB. . .E voltage protection, plugging, and similar ap- 20 A100AB. . .F plications. Relays are available with either 20 A100AB. . .F shunt or series coils. They can be mounted 04 A100BB. . .G 13 A100BB. . .H on either steel or insulating panels. 22 A100BB. . .J 4 Choose general-duty relays for normal 31 A100BB. . .K service or where space is limited. Select 40 A100BB. . .L heavy-duty relays for severe service or when 06 A100BB. . .AB 15 A100BB. . .AD more than four circuits are required. 24 A100BB. . .AE Latched-in relays are used for overvoltage or 33 A100BB. . .AF 6 overcurrent protection. Note that relays for 42 A100BB. . .AG 51 A100BB. . .AH control of circuits 48 volts and below have 60 A100BB. . .AJ contacts designed especially for this voltage. 26 A100BB. . .BB Complete relays are recommended when 35 A100BB. . .BC applications are known in advance. Build- 44 A100BB. . .BD 53 A100BB. . .BE ing-block units are recommended when ap- 8 62 A100BB. . .BF plications vary in number of circuits and 71 A100BB. . .BG contact arrangements. 80 A100BB. . .BH Contacts can be changed from normally 46 A100BB. . .CB 55 A100BB. . .CC open to normally closed and vice versa, ex- 64 A100BB. . .CD cept that general-duty relays should not ex- 73 A100BB. . .CE 10 ceed two normally closed contacts. To as- 82 A100BB. . .CF 91 A100BB. . .CG sure proper clearance on NO-NC 10 0 A100BB. . .CH combination, locate NC contact on bottom. 66 A100BB. . .CJ 75 A100BB. . .CK 84 A100BB. . .CL 93 A100BB. . .CM 12 10 2 A100BB. . .CN 11 1 A100BB. . .CP 12 0 A100BB. . .CQ Data subject to change without notice NOTE: Relays for Ac operation—Refer to company. *Insert coil # in blank space from Step. 2. CONTRACTORS, RELAYS General Purpose Relays 5-17 IC2820A100, A101, A200 HOW TO SELECT ASSEMBLED RELAYS Step 1—Select Form—Latched-in Contact Arrangement Unit-mounted (Open) Number of IC2820 NO NC Contacts Form* Latched-in Relay, Manually Reset 01 A101AA. . .B 1 10 A101AA. . .C 02 A101AA. . .D 11 A101AA. . .E 2 20 A101AA. . .F 22 A101AD. . .J 31 A101AD. . .K 4 40 A101AD. . .L * Insert coil # in blank space from Step 2. Step 2—Insert Coil Number Coil Rating Type IC282OA100 Fig. 28. Latched-in relay of Ohms at 25 C or IC2820A200 Dc Coil IC2820A101 Volts A100, A101 A200 Shunt 115/120 725 830 33 Shunt 230/240/250 2790 3200 22 Shunt 500 10650 . . . 485 Shunt 550 17400 . . . 586 Series 0.3 to 1500 amperes * ... * Specify current rating required. HOW TO SELECT BUILDING-BLOCK UNITS 0-48 V Dc 49-600 V Dc Building- block Application Catalog Catalog Unit Number Number General-duty Relay 115/120 V coil IC2820A200B3 IC2820A200B3 1—Frame-and-coil assembly 230/240/250 V coil IC2820A200B2 IC2820A200B2 2 NO circuits IC2956A205A IC2956A200A 2—Contact blocks 1 NO, 1 NC circuits IC2956A205C IC2956A200C 2 NC circuits IC2956A205B IC2956A200B Fig. 29. Building-block units 1 contact block (left) IC2956A201M IC2956A201M 3—Mounting kits 2 contact blocks IC2956A201N IC2956A201N Heavy-duty Relay HOW TO ORDER 115/120 V coil IC2820A100BB3 IC2820A100BB3 Relays with shunt coils—Order by com- 230/240/250 V coil IC2820A100BB2 IC2820A100BB2 1—Frame-and-coil plete IC number including coil number. 500 V coil IC2820A100BB4 IC2820A100BB4 assembly EXAMPLE: To order a four-circuit relay with 550 V coil IC28220A100BB5 IC2820A100BB5 two normally open and two normally closed sets of 0.3-300 amp series coil IC2820A100BB† IC2820A100BB† contacts for operation on 230 volts dc. 2 NO circuits IC2956A205A IC2956A200A 2—Contact blocks 1 NO, 1 NC circuits IC2956A205C IC2956A200C Factory Assembled: Specify 2 NC circuits IC2956A205B IC2956A200B IC2820A100BB 2 J 1 or 2 contact blocks IC2956A201B IC2956A201B Interlocks-Steps 1 3 contact blocks IC2956A201C IC2956A201C Coil Number—Step 2 3—Mounting kits 4 contact blocks IC2956A201D IC2956A201D Basic Form—Step 2 5 or 6 contact blocks IC2956A201E IC2956A201E † Specify current rating. EXAMPLE: Same as above except latched-in type. Building Block: Specify DIMENSIONS AND RATINGS IC2820A101AD 2 J Qty 1—IC2820A100BB2 Qty 2—IC2956A200C Refer to page...............................................5-20 Contacts—Step 1 Qty 1—IC2956A201B Weight..........................................................5-20 Coil Number—Step 2 Relays with series coils—Order by com- Basic Form—Step 1 References: plete IC number and specify current rating Instruction Book...........................GEH 1941 required. Renewal Parts A100.......................GEF 4112 Data subject to change without notice CONTRACTORS, RELAYS 5-18 Timing Relays IC282OA100 the flux-decay principle—dropout being de- HOW TO ORDER layed by slowing the rate of flux decay. Non- Relays for dc operation—Order by com- magnetic armature shims of different thick- plete DS number including time-delay des- ness provide differing lengths of time delay. ignation and coil number. Some final adjustment can be made by vary- EXAMPLE: To order a four-circuit relay with ing tension of the armature spring. two normally open and two normally closed sets of Choose IC2820A100A relays for two cir- contacts for a time delay of 0.5 seconds and for cuits and minimum mounting space. operation on 230 volts dc. Choose IC2820A100B relays for either two or four circuits and added time delay per Factory Assembled: Specify the following table. IC2820A100B R202 J Contacts-Step 1 Timing Range in Seconds Relay 2 Circuits 4 Circuits Basic Form Time-delay designation Step 1 and coil number IC2820A100A 0.40—2.0 . . . —Step 2 IC2820A100B 0.25—2.0 0.30—1.5 Building Block: Specify Fig. 30. IC2820A100A Qty 1—IC2820A100BR202 Choose between completely assembled Qty 2—IC2956A200C relays and building-block units on the basis Qty 1—IC2956A201B of purchasing perference. If applications WHERE TO USE can be predicted, completely assembled re- Relays for ac operation—Order by com- Timing relays are used for motor acceler- lays may be desired. If applications vary in plete IC number including time-delay des- ation, sequence interlocking, and other ap- number of circuits and arrangement, build- ignation and coil number. Rectifiers and plications requiring delayed opening or ing-block forms may be more economical resistors are automatically supplied for sep- closing of control circuits. Relays operate on and practical. arate mounting. Step 1—Select Form IC2820A100A IC2820A100B Contact Arrangement Number of IC2820 IC2820 Contacts NO NC Form* Form* 0–48 Volts Dc 01 A100A. . .HB A100B. . .JW 1 10 A100A. . .HC A100B. . .JU 02 A100A. . .HD A100B. . .JT 11 A100A. . .HE A100B. . .JF 2 20 A100A. . .HF A100B. . .JV 04 . . . A100B. . .HB 13 . . . A100B. . .HC 22 . . . A100B. . .HE 4 31 . . . A100B. . .HK 40 . . . A100B. . .HU 49–600 Volts Dc 01 A100A. . .B A100B. . .B 1 10 A100A. . .C A100B. . .C 02 A100A. . .D A100B. . .D 11 A100A. . .E A100B. . .E 2 20 A100A. . .F A100B. . .F 13 . . . A100B. . .H 22 . . . A100B. . .J 4 31 . . . A100B. . .K 40 . . . A100B. . .L * Insert time delay designation and coil # in blank space from Step 2 References: Instruction Book...........................GEH 1941 Renewal Parts A100.......................GEF 4112 Data subject to change without notice CONTRACTORS, RELAYS Timing Relays 5-19 IC2820A100 Step 2—Insert Time-delay Designation and Coil Number Time Delay in Seconds Designation Dc Operation Ac Operation* One or Two Four Circuits Circuits 115/120 V 230/240/250 V 500 V 550/600 V 115 V 230 V 460 V IC2820A100A or IC2820A100B 0.4—0.6 0.3—0.45 X203 X202 X204 X205 X650 X651 X652 0.5—0.8 0.4—0.6 R203 R202 R204 R205 R650 R651 R652 0.75—1.25 0.6—0.9 B203 B202 B204 B205 B650 B651 B652 1.0—1.4 0.75—1.1 F203 F202 F204 F205 F650 F651 F652 1.3—1.6 1.0—1.2 E203 E202 E204 E205 E650 E651 E652 1.5—2.0 1.1—1.5 D203 D202 D204 D205 D650 D651 D652 *Rectifiers and resistors included as part of this number. Use ac coil operation price. Selection of time delay—Select time delay ACCESSORIES for specified voltages only, so that the desired delay falls in the middle and for separate mounting of the listed time-delay range. Adjust within IC2820A100A and A100B range by means of armature spring. Control Resistor Ac operation—Price for ac operation in- Volts Rectifier Cat. No. 68A7004 cludes rectifier and resistor for separate 115 Ac IC3500A403C2 A50E25DA-TH mounting. 230 Ac IC3500A403C6 A50E50DA-TH Contacts—To insure proper clearance of 460 Ac IC3500A403C5 A50E2500DA-TH NO-NC forms locate NC contact at bottom 500 Dc . . . A50E2500DA-TH 550/600 Dc . . . A50E4000DA-TH of contact block. Dimensions of Accessories—Refer to page 5-7. HOW TO SELECT BUILDING-BLOCK UNITS Step 1—Select Frame-and-coil Assembly Time Delay in Seconds Frame-and-coil Assembly One or Two Four 115/120 Vdc 230/240/250 Vdc 500 Vdc† 550/600 Vdc† Circuits Circuits 0.25—0.35 0.2—0.25 IC2820- IC2820- IC2820- IC2820- A100EM203 A100EM202 A100EM204 A100EM205 0.4—0.6 0.3—0.45 IC2820- IC2820- IC2820- IC2820- A100BX203 A100BX202 A100BX204 A100BX205 0.5—0.8 0.4—0.6 IC2820- IC2820- IC2820- IC2820- A100BR203 A100BR202 A100BR204 A100BR205 0.75—1.25 0.6—0.9 IC2820- IC2820- IC2820- IC2820- A100BB203 A100BB202 A100BB204 A100BB205 1.0—1.4 0.75—1.1 IC2820- IC2820- IC2820- IC2820- A100BF203 A100BF202 A100BF204 A100BF205 1.3—1.6 1.0—1.2 IC2820- IC2820- IC2820- IC2820- A100BE203 A100BE202 A100BE204 A100BE205 1.5—2.0 1.1—1.5 IC2820- IC2820- IC2820- IC2820- A100BD203 A100BD202 A100BD204 A100BD205 Selection of Time Delay. Select time delay so that the desired delay falls in the middle of the range of adjustment. † Includes series resistor. See ACCESSORIES above. Step 2—Select Contact Blocks Contact Block for Contact Block for Circuits 0-48 Vdc 49-600 Vdc Fig. 31. IC2820A100B building-block units 2NO IC2956A205A IC2956A200A 1No,1NC IC2956A205C IC2956A200C 2NC IC2956A205B IC2956A200B Step 3—Specify Mounting Kit (1 or 2 blocks) Mounting Kit IC2956A201B Step 4—Specify Shim Kit (Required only to change time delay. Kit permits change to any range listed above.) Shim Kit For IC2820A100B 117A8883G1 Fig. 32. Connections for ac operation. (Note: open either ac side alone or ac and dc sides simultaneously) Data subject to change without notice CONTRACTORS, RELAYS 5-20 Dc Relays General Information CONTACT RATINGS Rating in Amperes Break Break Contacts Volts Inductive Load‡ Noninductive Load Carry Make Two Circuits Two Circuits One Circuit One Circuit in Series in Series 48 Volts 12 Vdc & below 10 10 8.0 10.0 10.0 . . . and 24 Vdc 10 10 4.0 8.0 6.0 . . . belowp 48 Vdc 10 10 1.3 2.6 1.95 . . . 115/120 Vdc 10 60 1.8 4.0 2.7 6.0 230/240/250 Vdc 10 30 0.5 1.2 0.75 1.8 500/550 Vdc 10 12 0.2 0.35 0.3 0.525 49-600 Volts 115 Vac 10 60 6.0 . . . 6.0 . . . 230 Vac 10 30 3.0 . . . 3.0 . . . 460 Vac 10 15 1.5§ . . . 1.5§ . . . 575 Vac 10 12 1.2§ . . . 1.2§ . . . ‡ Ratings based on contactor coil currents, not brake or field-coil circuits. § Because of arc flare, allow 1 inch clearance through to ground, or 2 inch clearance to another contact block or interlock when open sides face each other. p 48-volt interlocks have special tips for making circuits at minimums of 500 millivolts and 0.018 amperes. PICKUP AND DROPOUT Relay Pickup Dropout Fig. 33. IC2820A100B assembled General-duty Cold: 63% rated volts or below 20% rated volts or above Hot: 80% rated volts or below Heavy-duty Cold: 63% rated volts or below 5% rated volts or above Hot: 80% rated volts or below MOUNTING DIMENSIONS (FRONT VIEW) (For dc operation*) Dimensions in Inches Number Approx Fig. Relay of Wt in Mounting Holes No. A B C D E F G Depth Contacts Lb Depth Diam 1 1 7 3 7 1 3 3 7 IC2820A100A 1or2 34 4 ⁄2 3 ⁄4 5 ⁄8 5 ⁄4 ⁄8 ⁄2 05 ⁄4 ⁄32 ⁄32 1 1 5 3 3 7 11 3 3 7 IC2820A100B 1or2 34 4 ⁄2 3 ⁄4 6 ⁄8 5 ⁄4 ⁄4 ⁄8 ⁄16 05 ⁄4 ⁄32 ⁄32 1 5 3 3 7 11 3 3 7 IC2820A100B 434 5 3 ⁄4 6 ⁄8 5 ⁄4 ⁄4 ⁄8 ⁄16 05 ⁄4 ⁄32 ⁄32 1 7 5 3 3 1 11 3 3 7 IC2820A100B 634 5 ⁄2 4 ⁄8 6 ⁄8 5 ⁄4 ⁄4 2 ⁄2 ⁄16 05 ⁄4 ⁄32 ⁄32 1 5 3 3 1 11 3 3 7 IC2820A100B 834 6 6 ⁄2 6 ⁄8 5 ⁄4 ⁄4 2 ⁄2 ⁄16 05 ⁄4 ⁄32 ⁄32 7 5 3 3 3 11 3 3 7 IC2820A100B 10 or 12 34 7 9 ⁄8 6 ⁄8 5 ⁄4 ⁄4 4 ⁄16 ⁄16 05 ⁄4 ⁄32 ⁄32 1 1 7 3 7 11 3 3 7 IC2820A101A 1or2 34 4 ⁄2 3 ⁄4 5 ⁄8 5 ⁄4 ⁄8 ⁄16 05 ⁄4 ⁄32 ⁄32 1 5 3 3 7 11 3 3 7 IC2820A101A 434 5 3 ⁄4 6 ⁄8 5 ⁄4 ⁄4 ⁄8 ⁄16 05 ⁄4 ⁄32 ⁄32 9 5 1 1 5 13 1 1 1 7 IC2820A200A 1or2 34 2 2 ⁄16 4 ⁄32 3 ⁄2 ⁄2 1 ⁄16 ⁄32 ⁄2 3 ⁄2 ⁄8 ⁄32 5 5 1 1 5 13 1 1 1 7 IC2820A200B 434 2 3 ⁄8 4 ⁄32 3 ⁄2 ⁄2 1 ⁄16 ⁄32 ⁄2 3 ⁄2 ⁄8 ⁄32 *For ac operation accessory dimension, refer to page 5-7. Fig. 34. Unit-mounted Data subject to change without notice CONTRACTORS, RELAYS Instantaneous Overload Relays 5-21 IC2820E500 WHERE TO USE HOW TO ORDER Use for protection of dc motors and Order by complete IC number including driven machines against suddenly applied contact designation. high overloads. An instantaneous overload EXAMPLE: To order an automatic-reset, 10- relay is normally used on cranes, hoists and amp relay with two normally closed contacts, other applications in which heavy overloads specify are encountered. IC2820E500AA8 C The IC2820E500 relays are unit-mounted on a steel base insulated from the electrical Step 1 Step 2 circuits. The panel on which relays are in- stalled need not be insulated except for rat- HOW TO SELECT ings 900 amps and larger using stud-bus terminals extending through the panel. Step 1—Select Form Continuous dc current ranges of 2.5 to Automatic-reset Manual-reset Continuous Calibration 1500 amps are available. Coil Rating Range IC2820 IC2820 Connections Dc Amp Amp Form Form 2.5 2.5—10 Front E500AA2. . . E500AB2. . . 3.2 3.2—12.8 Front E500AA3. . . E500AB3. . . 4 4—16 Front E500AA4. . . E500AB4. . . 5 5—20 Front E500AA5. . . E500AB5. . . 6.3 6.3—25.2 Front E500AA6. . . E500AB6. . . 8 8—32 Front E500AA7. . . E500AB7. . . 10 10—40 Front E500AA8. . . E500AB8. . . 12.5 12.5—50 Front E500AA9. . . E500AB9. . . 16 16—64 Front E500AA10. . . E500AB10. . . 20 20—80 Front E500AA11. . . E500AB11. . . 25 25—100 Front E500AA12. . . E500AB12. . . 32 32—128 Front E500AA13. . . E500AB13. . . 40 40—160 Front E500AA14. . . E500AB14. . . 50 50—200 Front E500AA15. . . E500AB15. . . 60 60—240 Front E500AA16. . . E500AB16. . . 75 75—300 Front E500AA17. . . E500AB17. . . 100 100—400 Front E500AA18. . . E500AB18. . . Fig. 35. IC2820E500 manual reset 150 150—600 Front E500AA19. . . E500AB19. . . 200 200—800 Front E500AA20. . . E500AB20. . . 300 300—1200 Front E500AA22. . . E500AB22. . . 300 300—1200 Back E500AA23. . . E500AB23. . . 600 600—2400 Front E500AA24. . . E500AB24. . . 600 600—2400 Back E500AA25. . . E500AB25. . . 900 900—3600 Back E500AA26. . . E500AB26. . . 1500 1500—6000 Back E500BA27. . . E500AS27. . . Front-connected relays—For back-of-panel wiring of front- Contact arrangement—Contacts can be changed by pur- connected relays, refer to company. chaser from normally open to normally closed, and vice versa. Back-connected relays—Back-connected relays must be To insure proper clearance of NO-NC forms, locate NC con- mounted on insulated panels to prevent grounding of stub-bus tact at bottom of contact block. terminals. Interlock contact ratings—Refer to page 5-20. Step 2—Add Contact Designation Contact Arrangement Designation Fig. 36. IC2820E500 automatic reset 1NC,1NO B 2NC C Trip setting can be adjusted from 100% to 2NO D 400% of coil rating (Forms AA and AB). For 50% to 200% trip setting, substitute AG for MOUNTING DIMENSIONS AA and AH for AB. Easy-to-read adjustment scale is provided. Manual reset relays can be easily con- verted to automatic reset by the purchaser without additional parts. FEATURES c Simple operation with little or no main- tenance c 2.5 to 1500 amp capacity c Adjustable trip setting c Auxiliary interlocks available References: Instruction Book...........................GEH 1945 Fig. 37. Renewal Parts.................................GEF 4103 Data subject to change without notice CONTRACTORS, RELAYS 5-22 Field-loss Relays IC2820D300 WHERE TO USE Use to protect dc shunt or compound- pick-up to be set below minimum field cur- wound motors against loss of field excita- rent. Relay will not protect against over- tion. The coil of the relay is connected in speed due to weak field unless the field series with the motor field. When excitation current decreases below the relay dropout is lost, the relay drops out and opens the setting. motor line contactor. HOW TO ORDER Select relay so that continuous rating will not be exceeded by the rated field current Order by complete IC number. EXAM- and the relay calibration range permits PLE: IC2820D300A2. HOW TO SELECT Continuous Pick-up Coil Rating Calibration Resistance Relay Form Amp Range—Amp Ohms at 20 C Fig. 38. IC2820D300 0.50 0.13—0.36 50.4 IC2820D300A2-Obsolete 0.50 0.072—0.145 50.4 IC2820D300B2-Obsolete 0.63 0.16—0.45 32.2 IC2820D300A3 CONTACT RATINGS 0.63 0.09—0.18 32.2 IC2820D300B3 Refer to page 5-20. 0.80 0.20—0.57 20.0 IC2820D300A4-Obsolete 0.80 0.114—0.228 20.0 IC2820D300B4 WIRING SYMBOL 1.00 0.25—0.71 12.6 IC2820D300A5 1.00 0.143—0.28 12.6 IC2820D300B5 1.25 0.31—0.89 8.05 IC2820D300A6 1.25 0.166—0.36 8.05 IC2820D300B6 1.6 0.40—1.13 5.00 IC2820D300A7 1.6 0.227—0.45 5.00 IC2820D300B7 2.0 0.50—1.42 3.08 IC2820D300A8 2.0 0.285—0.57 3.08 IC2820D300B8 2.5 0.63—1.78 1.96 IC2820D300A9 2.5 0.357—0.71 1.96 IC2820D300B9 3.2 0.80—2.28 1.22 IC2820D300A10-Obsolete 3.2 0.456—0.91 1.22 IC2820D300B10-Obsolete 4.0 1.00—2.86 .775 IC2820D300A11 4.0 0.57—1.14 .775 IC2820D300B11 5.0 1.25—3.56 .485 IC2820D300A12 MOUNTING DIMENSIONS 5.0 0.71—1.4 .485 IC2820D300B12 6.4 1.60—4.5 .286 IC2820D300A13 (FRONT VIEW) 6.4 0.90—1.8 .286 IC2820D300B13 7.4 1.8—5.26 .20 IC2820D300A16-Obsolete 7.4 1.05—2.1 .20 IC2820D300B14-Obsolete 8.0 2.00—5.7 .16 IC2820D300A25 8.0 1.14—2.3 .16 IC2820D300B15 12.0 2.9—8.3 . . . IC2820D300A26 12.0 1.67—3.33 . . . IC2820D300B20-Obsolete 17.0 4.4—12.5 . . . IC2820D300A27 17.0 2.5—5.0 . . . IC2820D300B21 25.0 7.0—20.0 . . . IC2820D300A17 25.0 4.0—8.0 . . . IC2820D300B22-Obsolete 50.0 14.5—41.7 . . . IC2820D300A28 50.0 8.4—16.8 . . . IC2820D300B23 115.0 29.0—83.0 . . . IC2820D300A29 115.0 16.7—33.3 . . . IC2820D300B25 Pickup and dropout curves Fig. 39. IC2820D300 References: Instruction Book...........................GEH 3055 Fig. 40. IC2820D300A Fig. 41. IC2820D300B Renewal Parts.................................GEF 4101 Data subject to change without notice CONTRACTORS, RELAYS Ac Low-voltage Relays 5-23 IC2820A102 contacts shorting out the rectifier and coil. DESCRIPTION The trip lever holds the relay in this position GROUND-FAULT RELAY until the lever is moved in a counterclock- wise direction to the ‘‘RESET’’ position. The IC2820A102 is a fast-acting hand-re- The photo shows the reset lever in the set relay designed to interrupt control ‘‘TRIP’’ position and also the rectifier and power of a line contactor on sensing a resistor mounted on the relay. ground current in the lines to an ac motor DIFFERENTIAL RELAY load or other ac equipment. If a ground The IC2820A102A differential relay de- fault can be removed within a few cycles of tects any difference in current going in and its initiation, damage to a motor or other ac out of each phase of a wye-connected mo- equipment can be minimized. For example, tor. The current difference will trip the dif- on a large induction or synchronous motor ferential relay and shut down the motor by when an insulation failure occurs to opening the motor-line contactor. ground, the fault current will be removed As shown in the elementary diagram (Fig. before damage is done to the laminations, 50), separate relays and window-type cur- thus making it possible to repair the motor rent transformers* are connected in each at a minimum of expense and downtime. phase of the motor. As shown in the elementary diagram, the relay is designed for use with a window-type *The IC2820A102 ground-fault and differential relay is Fig. 47. IC2820A102 relay current transformer* where the three load specifically designed to be used with GE transformer types JCS-0 (50:5, 100:5), JAH-0 (300:5, 400:5) and JCH-0 leads (for a 3-phase system) are placed (300:5) (Transformer must be ordered separately.) DO CONTACT RATINGS through the window. When a ground fault NOT apply with other transformers. occurs, the vector sum of the currents in the Refer to page 5-20. load cables will not equal zero and this sum will cause a current in the secondary of the HOW TO ORDER current transformer that will energize the Order by complete IC number. relay coil. This current will actuate the relay to ‘‘TRIP’’, opening the normally closed contacts, and closing the normally open GE Transformer Pick-up Amperes (Approx) Catalog No. Poles JCS-0 JCS-0 JCH-0 JAH-0 JAH-0 50:5 100:5 300:5 300:5 400:5 GROUND-FAULT RELAY IC2820A102BE 1 NC 8 13 N/A 25 30 IC2820A102BF 1 NC 6 N/A 10 12 14 IC2820A102BG 1 NO 8 13 N/A 25 30 IC2820A102BH 1 NO 6 N/A 10 12 14 DIFFERENTIAL RELAY IC2820A102AM 1 NC 8 13 N/A 25 30 IC2820A102AK 1 NO 8 13 N/A 25 30 PANEL LAYOUT DIMENSIONS Fig. 50. Sample elementary diagram of differential-relay Fig. 49. Sample elementary diagram for IC2820A102 circuit, IC2820A102. One relay and current transformer Forms BE and BG. Forms BF and BH do not use 4-ohm are connected in each motor phase. resistor. REFERENCES: Instructions................................GEH-3071 3 Fig. 48. Depth front of base55 ⁄4 inches Renewal Parts Bulletin...............GEF-4318 Data subject to change without notice CONTRACTORS, RELAYS 5-24 Field Application IC2820C100 DESCRIPTION CONTACT RATINGS The IC2820C100L (FR) field-applying re- Refer to page 5-20. lay working in conjunction with auxiliary HOW TO ORDER relay IC2820C100B (FRX) provides time de- By complete IC and form number. Volt- lay for closing the field contactor when the ages not listed, order by description. proper dc voltage is available to pull the machine into step. Sliding bi-metal shims, by which the air gap may be changed, pro- vides for adjustment of the time dropout. The relay is designed for mounting on steel or insulated bases and uses the IC2956 universal interlock for its contacts. Fig. 51. IC2820C100 field-applying relay FIELD APPLICATION RELAY IC2820 Dc PANEL LAYOUT DIMENSIONS Contacts Form Volts C100L2 125 2 NO, 1 NC C100L3 250 2 NO, 1 NC C100B10 125 2 NO, 1 NC C100B11 250 2 NO, 1 NC OTHER FORMS IC2820 Form C100A* C100B* C100C* C100D* C100G* C100L* C100M* C100N* C100R* C100S* 3 Fig. 52. Depth front of base55 ⁄4 inches *Coil designation. Does not affect price. REFERENCES: Publications Instructions- A, B, L..................GEH-4604 C, D, G, M, N, R, S..................GEH-1947 Renewal Parts Bulletin...............GEF-4152 Data subject to change without notice CONTRACTORS, RELAYS