RLM01A01 05.31.02 Description 3 Phase Voltage Monitor The RLM Series of encapsulated three phase voltage monitors continuously measures the RLM Series voltage of each of the three phases. Its circuit Motor Protector design separately senses Phase Reversal, Undervoltage, and Voltage Unbalance including Phase Loss. Protection is assured during periods of large average voltage fluctuations, or when regenerated voltages are present. Both Delta 2 Amp and Wye systems can be monitored; no Fast Acting connection to neutral is required. Fuses Operation The output relay is energized and the LED glows when all voltages are acceptable and the phase sequence is correct. Undervoltage and voltage unbalance must be sensed for a continuous trip F = Fuses delay period before the relay and the LED are = Phase A = L1 OA de-energized. Re-energization is automatic upon ANSI Device #47/27 = Phase B = L2 OB correction of the fault condition. The output relay = Phase C = L3 OC will not energize if a fault condition is sensed as Protects Against: Phase Loss, Phase Reversal, Δ U = Unbalance Adjustment power is applied. Undervoltage, & Unbalance Voltages Δ V = Line Voltage Adjustment Industrial Packaging with Encapsulated Circuitry ΔT = Trip Delay Adjustment ASME A17.1 rule 210.6, NEMA MG1 14:30, 14:35, Fully Adjustable or Factory Fixed IEEE C62.41-1991 Level B SPDT Isolated 8 A Contacts CAUTION: 2 amp max. fast acting fuse must LED Glows When All Conditions are Acceptable Approvals: be installed externally in series with each input. Line Voltages 200 ... 480 V AC, in 3 Ranges (3) (Bussman KTK-2 or equivalent) Ordering Table X X X RLM Series Line Voltage Voltage Unbalance Trip Delay –6 - 240 V AC –1 - Adjustable: 2 ... 6 % –1 - Adjustable: 2 ... 20 s –9 - 480 V AC –Fixed: Specify: 4, 5, 6, 7, or 8 % –Fixed: Field Adjustment: Set voltage, delay period, Specify delay in s, and voltage unbalance percentage (consult –8 - 380 V AC –1 - Adjustable: 2 ... 8 % (380 V AC only) 2 ... 20 s in 1 s increments equipment manufacturer's specifications). Make –Fixed: Specify: 4, 5, 6, 7, or 8 % (insert 0 before 2 ... 9) connection to all three line phases as shown in the connection diagram. Apply power. If the Example P/N: RLM611 Fixed - RLM9405 relay fails to energize, check the wiring of all 3 Technical Data phases, voltage, and phase sequence. If phase sequence is incorrect, swap any two wires. No Line Voltage further adjustment should be required to achieve Type 3 phase Delta or Wye with no connection to neutral maximum equipment protection. Operating Voltage: UL CSA Model Adj. Line Voltage Range Line Voltage Max. Calibration Frequency • • 240 200 ... 240 V AC 270 V AC 60 Hz • 380 360 ... 430 V AC 480 V AC 50 Hz • • 480 400 ... 480 V AC 530 V AC 60 Hz Line Frequency 50 ... 60 Hz Phase Sequence ABC Undervoltage and Voltage Unbalance Type Voltage detection with delayed trip & automatic reset Undervoltage: Trip Voltage 88 ... 92% of adjusted line voltage Inches(Millimeters) Reset Voltage +3% of trip voltage Voltage Unbalance: Trip Unbalance 240 & 480 V AC Adj. 2 ... 6%; 380 V AC Adj. 2 ... 8%; or fixed at 4, 5, 6, 7, or 8% Reset on Balance (%): Selected Unbalance 2 3 4 5 6 7 8 Reset 1.8 2.7 3.6 4.5 5.4 6.3 7.2 Note: A 60 Hz unit used on 50 Hz will shift by -1. A 50 Hz unit used on 60 Hz will shift by +1. (Ex: 4% unbalance on 60 Hz would be 3% unbalance on 50 Hz. Trip Delay: Range Adjustable or Factory fixed from 2 ... 20 s Tolerance Adjustable: Guaranteed range; Factory fixed: +/-15% Phase Reversal Response Time -- Phase Reversal ≤100 ms Reset Automatic Output Type Electromechanical relay Form Single pole double throw (SPDT) Rating 8 A resistive at 240 V AC; max. voltage 277 V AC Protection Surge IEEE C62.41-1991 Level B Isolation Voltage ≥ 2500 V RMS input to output Circuitry Encapsulated Accessories Mechanical Mounting Surface mount with two #8 (M4 x 0.7) screws Termination 0.25 in. (6.35 mm) male quick connect terminals L Environmental W Operating Temperature -40°C ... +60°C Storage Temperature -40°C ... +85°C Female quick connect Fuse 2A fast acting P/Ns: Humidity 95% relative, non-condensing 1.5“ x 13/32“ 3-phase fuse P1015-13 (AWG 10/12) Weight ≅ 8.7 oz (247 g) (38.1 mm x 10.3 mm) block/disconnect P1015-64 (AWG 14/16) P/N: P0600-11 P/N: P0700-241 P1015-14 (AWG 18/22) See accessory page at the end of this section. 260