GROUND FAULT MONITOR IR145Y-... for Ungrounded AC & DC Systems from 0...300V Quality System Certified ISO 9001 VDE IEC Product Description The BENDER IR145Y continuously monitors the insulation resistance level of ungrounded (floating) AC-, DC- and AC/DC systems up to AC 300 V or DC 290 V. The alarm set-point is A1 A2 L1 L2 KA LT1 LT2 PT steplessly adjustable from either 1kΩ...20kΩ for the IR145Y-3.. ON or from 10kΩ...200kΩ for the IR145Y-4... + ALARM ~ kΩ - MONITOR The device is particularly suited for AC control circuits with TEST RESET extensive, directly connected rectifiers as well as for DC control circuits. The AMP measuring method signals insulation faults in kΩ 10 200 AC- and DC systems with the same response sensitivity. RESET/- A-ISOMETER® Serie 145 The devices are fitted into plastic casings for quick assembly KE 11 12 14 21 22 24 onto support DIN 35/15 rail or for screw mounting. Operational Information Within the BENDER IR145Y a measuring signal is generated Dimension Diagram (mm) which is connected to the system via the terminals L1/L2 and is connected to ground via the terminals /KE . These 45 (1.77") connections are monitored continuously. If one of these connections is interrupted, it will be indicated by flashing alarm LEDs and alarm relay. The measuring signal consists of positive and negative pulses of the same amplitude. The period depends on the respective leakage capacitances and insulation resistance of the system to be monitored. Insulation faults in DC circuits which are directly connected to the AC system are only monitored correctly when the rectifiers carry a load current > 5...10 mA. The measuring circuit is closed via ohmic insulation faults. When the insulation value falls below the preset response DIN Rail mounting as per DIN EN 50 022 value, the alarm LEDs "ALARM" illuminate and the alarm relay switches state. The alarm LEDs indicate either "AC ground fault", "DC + ground fault" or "DC - ground fault". nFor Ungrounded (floating) AC and DC systems If the fault indication shall be stored, the terminal LT1/LT2 have from AC 0 to 300 V/ DC 0 to 290 V to be bridged by an external reset button (NC contact) or by nAutomatic adaption to the system leakage selecting "with fault memory" at the respective DIP switch on capacitance up to 20μF the front plate. The fault memory can be reset by pushing the nAMP-measuring principle (patent pending) [TEST/RESET] button located at the front plate or the external reset button for a short period provided that the insulation nAdjustable set-point ranges: resistance exceeds the set response value by at least 25%. By IR145Y-3.. - 1kΩ...20kΩ pushing the internal test button or the external test button (NO IR145Y-4.. - 10kΩ...200kΩ contact), the correct function of the measuring circuit, the alarm LEDs and the alarm relay can be checked.nOperation and alarm LEDs and Test/Reset button nTwo voltage-free change over contacts nConnection monitoring nUL / CSA listed, Meets VDE/IEC standards, CE mark Page 1 of 3 1.1 - 12.1A / Sept 1997 Bender Industrial Products - 700 Fox Chase - Coatesville, PA 19320 - Toll-free: (800) 356-4266 - Fax: (610) 383-7100 5 (0.2") 105 (4.13") 74 (2.9") Technical Data IR145Y-... Note: Please check for correct supply voltage. Insulation Rated insulation voltage AC 250 V Only one insulation monitoring device may be used in each Rated impulse voltage / disturbance grade 4 kV/3 interconnected system. Operation class continuous operation In order to check the proper connection of the device, it is Monitored System recommended to carry out a functional test using a genuine ground Rated mains voltage U N fault, e.g. via a suitable resistance, before starting the operation. - IR145Y-3.. DC or AC 15 ... 400 Hz, 0 ... 138 V - IR145Y-4.. DC 0... 290 V or AC 15 ... 400 Hz, 0 ... 300 V When insulation and voltage tests are to be carried out, the device must be isolated from the system for the test period. Supply Voltage Supply voltage U The terminal KA must be connected by a separate wire to one S - IR145Y-313 or IR145Y-413 120V AC, 50..60Hz phase conductor (L1 or L2 or L+ or L-) of the network to be - IR145Y-314 or IR145Y-414 230V AC, 50..60Hz monitored. This connection allows to monitor the system connection - IR145Y-321 or IR145Y-421 9.6 ... 84V DC to the measuring circuit. In any case, there must be a connection Operating range U AC 0.8 ... 1.15 x U between L1/L2/KA for connection monitoring (e.g. via the winding S S of the isolating transformer). Alarm Response Values Response value R Electrical equipment shall only be installed by qualified personnel ALARM - IR145Y-3.. 1 ... 20 kΩ in consideration of the current safety regulations. - IR145Y-4.. 10 ... 200 kΩ Hysteresis 25% of R ALARM Response time (R =0kΩ, C =1μF) E E - IR145Y-3 3 s Ordering Guide - IR145Y-4 5 s Type Supply voltage Art. No. Max. mains leakage capacitance 20 μF U S Measuring Circuit IR145Y-313 AC 120V 910 35505 Measuring voltage U (peak value) 13 V M Measuring current I IR145Y-314 AC 230V 910 35502 M - IR145Y-3.. 0.47 mA IR145Y-321 DC 9.6 ... 84V 910 35504 - IR145Y-4.. 0.11 mA IR145Y-413 AC 120V 910 36505 Internal DC resistance/impedance - IR145Y-3.. (Ri/Zi) 28/22 kΩ IR145Y-414 AC 230V 910 36502 - IR145Y-4.. (Ri/Zi) 120 /94 kΩ IR145Y-421 DC 9.6 ... 84V 910 36504 Max. admissible stray DC voltage U eff - IR145Y-3.. 138 V IR145Y-411 AC 24V 910 36519 - IR145Y-4.. 300 V IR145Y-423 DC 77-286V 910 36517 Alarm Relay Switching components 2 voltage-free SPDT contacts Rated contact voltage AC 250 V/DC 300 V Rated current UC 5 A Break capacity AC 230V, p.f. = 0.4 AC 2 A Break capacity DC 220 V and L/R = 0.04 s DC 0.2 A Operating mode Normally Energized / De-energized Adjustment by factory Normally De-energized Testing Dielectric test: Test voltage 2 kV Impulse voltage test acc. to IEC255-5 class III Electrical disturbance test acc. to IEC255-5 class III Elec. fast transient burst acc. to IEC801-4 severity degree 2 Shock resistance acc. IEC68-2-27 15g / 11sec Vibration strength acc. to IEC68-2-6 10...150Hz / 0.15mm - 2g Bumping acc. to IEC68-2-29 40g / 6msec Environmental Conditions Ambient temperature, during operation -10°C ... +55°C Storage temperature range -40°C ... +70°C General Data Type of connection screw terminals Wire size, solid 14 AWG Wire size, stranded with end sleeve 16 AWG Mounting DIN rail or screw (#990 056) Weight 1 lb Page 2 of 3 1.1 - 12.2A / Sept 1997 Bender Industrial Products - 700 Fox Chase - Coatesville, PA 19320 - Toll-free: (800) 356-4266 - Fax: (610) 383-7100 IR145Y-... Wiring Diagram UN AC UN DC L1 L+ L2 L- L1 L2 KA L1 L2 KA external reset button for US fault memory see nameplate Power On LED LT1 LT2 Alarm LEDs, illuminate when the insulation value falls below the pre-set A1 A2 L1 L2 KA LT1 LT2 PT response value and in case of interrruption of the connecting leads ON /KE or L1/L2. + ~ ALARM combined test and reset button - external test button combined test and reset button short-time pressing (< 1 sec.) = Reset short-time pressing (<1sek.) = Reset TEST long-time pressing (> 2 sec.) = Test RESET long-time pressing (>2sek.) = Test kΩ Potentiometer for the adjustment 10 200 of the response value RALARM RESET/- PT DIP-switch for the selection of the KE 11 12 14 21 22 24 operating principle of the alarm relay and the latching properties in case of fault alarm 11 21 without fault memory Alarm Relay in Alarm relay in N.E. (normally energized mode) N/C operation 14 12 24 22 with fault memory Alarm relay with two Alarm Relay in change-over contacts Alarm relay in N.D. (normally de-energized mode) N/O operation Equipment Grounding Conductor PE Measuring Time For checking the measuring circuit, the BENDER A-ISOMETERs are equipped with connection monitoring. The following fault indications are t (sek.) possible: 22 20 Fault Indication Alarm LED Alarm relay 18 RF = 200 kΩ +- 16 14 AC faults x x x 12 DC faults L+ x x 10 DC faults L- x x 8 6 Interruption /KE or L1/L2 o o x 4 RF = 0...40 kΩ 2 o = flashing 0 x = continuous indication 2 68 10 12 14 16 18 20 4 CE (μF) If one of these fault indications occurs, the connections have to be C system leakage capacitance E checked as possible. R insulation fault resistance F t measuring time Page 3 of 3 1.1 - 12.3A / Sept 1997 Bender Industrial Products - 700 Fox Chase - Coatesville, PA 19320 - Toll-free: (800) 356-4266 - Fax: (610) 383-7100