ELECTRONIC MOTOR PROTECTION RELAYS

ELECTRONIC MOTOR PROTECTION RELAYS

ELECTRONIC MOTOR PROTECTION RELAYS Electronic Multifuctional Motor Protection Relays are designed to monitor two/three phase motor currents by integral/external current transformers and processing it further through a Electronic Circuitry and delivering its control signal to the output part to interrupt power incase of abnormal conditions of motor. SALIENT FEATURES Multifunctional Protections in Single Unit Adjustable and Tripping time Low Power Consumption High Accuracy Ammeter Function through LED/Digital display DIN Rail/Panel Mounting Test Function Ambient Insensitive Selectable /Inverse Time Characteristics For currents above 60A external CT should be used Trip Indication through LED/Digital display It can provide various protections for motors like Overload, Phase Loss, Locked Rotor, Phase Unbalance, Undercurrent, Phase Reversal, Ground Fault etc. The Over Relays are available from 0.5 to 60 Amp., extendable up to 960 Amp. using external CTs. Applications include Pumps, HVAC, Conveyor System, Machinery and other single or three Phase equipment. Model: BOCR SS Time Type 05 30 60 Over 60 Start DTime Trip OTime 0.5 ~ 6A 3.0 ~ 30A 5.0 ~ 60A Ext. CT Option 0.2 ~ 30 sec 0.2 ~ 10 sec (50/60 Hz) 24 ~ 240V AC/DC 380 ~ 440V AC Output Relay Mode Rating Changeover (1SPDT) 3A/250V AC Resistive Time Characteristics Trip Indication LED 2 Integral Transformers 1

Model: BOCR DS3 Phase reversal Time Type 05 30 60 100 ~ (Over 60A) Start DTime Trip OTime 0.5 ~ 6A 3.0 ~ 30A 5.0 ~ 60A Ext. CT Option 1.0 ~ 50 sec 1.0 ~ 10 sec 24 ~ 240V AC/DC 380 ~ 480V AC Output Relay Mode Rating 2 SPST 3A/250V AC Resistive Time Characteristics Trip Indication LED 3 Integral Transformers Model: BOCR DS1 Phase reversal Time Type 05 30 60 100 ~ (Over 60A) Start DTime Trip OTime 0.5 ~ 6A 3.0 ~ 30A Ext. CT Option 0 ~ 50 sec 1.0 ~ 10 sec 24 ~ 240V AC/DC 380 ~ 480V AC Output Relay Mode Rating 2 SPST 3A/250V AC Resistive Time Characteristics Inverse Trip Indication LED 3 Integral Transformers 2

Model: BOCR SSD Time Type 01 10 20 Start DTime Trip OTime 0.5 ~ 6A 3.0 ~ 30A 10 ~ 60A 1 ~ 30 sec 0.5, 1 ~ 10 sec 24 ~ 240V AC/DC 380 ~ 440V AC Output Relay Mode Rating 2 SPST 3A/250V AC Resistive Time Characteristics Trip Indication Digital Dispaly Load Selection Single / Three Phase by DIP switch 2 Integral Transformers Model: BOCR 3DE Over 0.5 ~ 960A (Over 60A with External CTs) Under Phase Unbalance Phase Reversal Alert Under Phase Unbalance Phase Reversal Phase Loss Locked Rotor 0.5 ~ 59A/OFF (Over 60A with External CTs) 0.5 ~ 30 sec 5.0 ~ 50% (within 8 sec) 0.1 ~ 30 sec within 3 sec Lock: within 0.5 sec after Dtime (in DEF set) Stall: 0.05 ~ 10 sec (in DEF set) 50 ~ 100% of OC setting Time (OTime) Start Delay Time (DTime) Trip Delay Time Time (DTime) INV DEF 1 ~ 200 sec () 1 ~ 30 sec 0.2 ~ 30 sec Output Relay Time Characteristics (selectable) OL/UL GR In/''tc''mode de/''tc''mode Digital Ammeter 100 240V AC, 415V AC, 24V DC 2 SPST, 3A/250V AC Resistive 1 SPST, 3A/250V AC Resistive Inverse Troubleshooting, Trip cause Memory, Display 3

Model: BOCR 3EZ Under Phase Unbalance Phase Reversal Ground Fault CT Start Delay Time (DTime) Time (OTime) Over Under Phase Unbalance Phase Reversal Trip Delay (OTime) Phase Loss Locked Rotor Ground Fault INV DEF 0.5 ~ 960A (Over 60A with External CTs) 0.5 ~ 59A/OFF (Over 60A with External CTs) 0.5 ~ 30 sec 5.0 ~ 50% (within 8 sec) 0.1 ~ 30 sec within 3 sec Lock: within 0.5 sec after Dtime (in DEF set) Stall: 0.05 ~ 10 sec (in DEF set) 0.02 ~ 3A 1 ~ 200 sec 1 ~ 30 sec 0.2 ~ 30 sec 100 240V AC, 24V DC LED DISPLAY DOWN SET/STORE CONTROL POWER ZCT INPUT L1 Amp L2 L3 SOC BOCR3EZDigital MODE SET RESET Store ON ADJUST UP ZCT OL/UL GR A1(+) A2 Z1 Z2 97 98 57 58 UP RESET GR OUTPUT OL/UL OUTPUT Output Relay Time Characteristics (selectable) OL/UL GR In/''tc''mode de/''tc''mode Digital Ammeter Troubleshooting, Trip cause Memory, Display 1 SPST, 3A/250V AC Resistive 1 SPST, 3A/250V AC Resistive Inverse Dimension (mm) 10 13 22 22 53 16 15 7.5 BOCR 3DE/3EZ 5 63 70 59 71 DIN RAIL TYPE BRACKET HOLE SIZE BOCR 3DE/3EZ 4

Dimension (mm) 51 6M3.5 13.5 77.2 12.8 52.33 10.7 13 50.6 55.6 60.2 21.8 16.4 9.5 56 BOCR SS 56 51 62.2 10 63 56 12 50.8 19.5 4.5 NIL 20.4 30.4 6M3.5 60.2 77.2 DIN RAIL & SCREW MOUNTING BOCR SS/D 6M3.5 7 10 R2.5 R2.2 46 12 69 81 28 48 56 41.5 DIN RAIL TYPE BRACKET HOLE SIZE BOCR DS1/DS3 5

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