Crouzet Automation 84903020, Three Phase Voltage Control Relay, Phase Sequence or Phase Failure - 17.5 mm EMWS, 208-480 VAC, Self Powered For Phase Sequence of Phase Failure Monitoring of AC Voltages up to 480VAC Features: Control Monitoring of AC voltages Automatic recognition of AC Measurement ranges from 288 V to 480 VAC Choice between under and overvoltage True RMS measurement Selectable latching (memory) function Specification Crouzet Part Number 84903020 (Three Phase C-Lynx Voltage Monitoring Relay With SPDT Contacts) Function Phase Sequence/Phase Failure Nominal Voltage 1 x 208 - 480 VAC/DC Digital Outputs 1 x C/O Relays, 250VAC/DC @ 5 Amp Min Breaking Current 10mA/5VDC Delay on Threshhold Crossing 0.1 → 3s (0, +10%) Delay on Pickup 600ms Alarm Delay on Time (max) 200ms Reset Time 1500ms Adjustable Hysteresis 5 - 50% of Threshhold Maximum Measurement Cycle Time 30ms/True RMS Measurement Measurement Accuracy 1% Supply Voltage Range Same as Measurement 3 x 220 → 3 x 480 V ∿ Termination Style Screw Weight 170g Certification CE, UL, CSA, GL, ROHS Factory Pack Qty 1 Over Voltage Category 3 in accordance with IEC/EN 60664-1 Pollution Degree 2 in accordance with IEC/EN 61131-2 Protection rating IP40 (Front), IP20 (Rear) Mechanical Resistance Immunity to vibrations IEC/EN 60068-2-6, test Fc Immunity to shock IEC/EN 60068-2-27, test Ea Resistance to HF Interference Immunity to radiated electrostatic fields IEC/EN 61000-4-3 Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3 Immunity to shock waves IEC/EN 61000-4-5 Radio frequency in common mode IEC/EN 61000-4-6, level 3 Voltage dips and breaks (AC) IEC/EN 61000-4-11 Immunity to damped oscillatory waves IEC/EN 61000-4-12 Conducted and radiated emissions Class B (*) in accordance with EN 55022, EN 55011 (CISPR22, CISPR11) group 1 (*) Except configuration (88 970 1.1 or 88 970 1.2) + (88 970 250 or 88 970 270) + 88 970 241 class A (class B in a metal enclosure) Operating Temperature -20 →+70 °C except CB and XB versions in VDC : -30 →+70 °C (+40 °C in a non-ventilated enclosure) in accordance with IEC/EN 60068-2-1 and IEC/EN 60068-22 Datasheet Product Datasheet

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Fastron FRV 8-04/265, 127 to 265VAC L-N Voltage Monitoring Relay, 3 Phase 4 Wire Over/Under Voltage Detection, 1 x CO SPDT 8 Amp Contact, Adjustable Timer Delay, Adjustable Upper and Lower Voltage Limits FRV 8 Series serves to monitor voltage, phase failure and sequence in switchboards, protection of devices in 3-phase 4 wire mains Features Upper and lower level of monitoring voltage Adjustable time delay eliminates short voltage peaks and failures in the main Supply is done from monitored voltage Faulty state is indicated by red LED and by opening of output relay contact Output contact 1 x Changeover / SPDT 10 A /250 V AC1 In case supply voltage falls below 60 %Un (U lower level) relay off immediately opens without delay FRV8-04/460 - supply from all phases which means that relay is functional also in case when one phase is faulty Variant FRV 8-04/265 - supply L1-N, means that relay monitors also failure of neutral wire 1-MODULE, DIN rail mounting Specification Technical Data FRV 8 Supply and measuring L1, L2, L3 (127,132,138,220,230,240,254,265VAC) Supply terminals L1, L2, L3 Supply/measured voltage 3 x 127-265 V (L-N) / 50 Hz Level Umax 105 - 125 % Un Level Umin 75 - 95 % Un Burden max. 2 VA Hysteresis 2 % Max. permanent overload AC 3 x 265 V Peak overload <1ms AC 3 x 265 V Time delay T1 max. 500 ms Time delay T2 adjustable 0.1-10 s Output Number of contacts 1 x changeover/ SPDT (AgNi / Silver Alloy) Current rating 10 A / AC1 Breaking capacity 2500 VA / AC1, 240 W / DC Inrush current 10 A Switching voltage 250 V AC1 / 24 V DC Min. breaking capacity DC 500 mW Indication of state red LED Mechanical life 1 x 107 Electrical life (AC1) 1 x 105 Other information Operating temperature -20 ... +55 °C Storage temperature -30 ... +70 °C Electrical strength 4 kV (supply - output) Operating position any Mounting DIN rail EN 60715 Protection degree IP 40 from front panel / IP 10 terminals Overvoltage cathegory III. Pollution degree 2 Max. cable size (mm )2 solid wire max. 2x2.5 or 1x4 ; with sleeve max. 1x2.5 or 2x1.5 Dimensions 90 x 17,6 x 64 mm Weight 69 g Standards EN 60255-6, EN 61010-1, RoHS, CE, CE Datasheet Product Datasheet Fastron Monitoring/Time Relays Catalogue For items in our catalogue which are not listed online please Contact Us for Possible Replacement Application Notes Relay in 3-phase main monitors size of phase voltage. It is possible to set two independent voltage levels and thus it is possible to set two independent voltage levels and monitor e.g. undervoltage and overvoltage independently. In normal state when voltage is within set levels, output relay is closed and red LED shines. In case voltage exceeds or falls below the set levels, output relay opens and red LED shines ( LED indicates faulty state – flashes when timing). In case supply voltage falls below 60 % Un (UOFF lower level)relay immediately opens without delay and faulty state is indicated by red LED.In case timing is in progress and faulty state is indicated, timing is immediately stopped.

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Fastron FRV 8-04/460, 220-460VAC L-L Voltage Monitoring Relay, 3 Phase Over/Under Voltage Detection, 1 x CO SPDT 8 Amp Contact, Adjustable Timer Delay, Adjustable Upper and Lower Voltage Limits FRV 8 Series serves to monitor voltage, phase failure and sequence in switchboards, protection of devices in 3-phase mains Features Upper and lower level of monitoring voltage Adjustable time delay eliminates short voltage peaks and failures in the main Supply is done from monitored voltage Faulty state is indicated by red LED and by opening of output relay contact Output contact 1 x Changeover / SPDT 10 A /250 V AC1 In case supply voltage falls below 60 %Un (U lower level) relay off immediately opens without delay FRV 8-04/460 - supply from all phases which means that relay is functional also in case when one phase is faulty Variant FRV 8-04/265 - supply L1-N, means that relay monitors also failure of neutral wire 1-MODULE, DIN rail mounting Specification Technical Data FRV 8 Supply and measuring L1, L2, L3 (220,230,240,380,400,415,440,460VAC) Supply terminals L1, L2, L3 Supply/measured voltage 3 x 220-460 V / 50 Hz Level Umax 105 - 125 % Un Level Umin 75 - 95 % Un Burden max. 2 VA Hysteresis 2 % Max. permanent overload AC 3 x 460 V Peak overload <1ms AC 3 x 500 V Time delay T1 max. 500 ms Time delay T2 adjustable 0.1-10 s Output Number of contacts 1 x changeover/ SPDT (AgNi / Silver Alloy) Current rating 10 A / AC1 Breaking capacity 2500 VA / AC1, 240 W / DC Inrush current 10 A Switching voltage 250 V AC1 / 24 V DC Min. breaking capacity DC 500 mW Indication of state red LED Mechanical life 1 x 107 Electrical life (AC1) 1 x 105 Other information Operating temperature -20 ... +55 °C Storage temperature -30 ... +70 °C Electrical strength 4 kV (supply - output) Operating position any Mounting DIN rail EN 60715 Protection degree IP 40 from front panel / IP 10 terminals Overvoltage cathegory III. Pollution degree 2 Max. cable size (mm )2 solid wire max. 2x2.5 or 1x4 ; with sleeve max. 1x2.5 or 2x1.5 Dimensions 90 x 17,6 x 64 mm Weight 69 g Standards EN 60255-6, EN 61010-1, RoHS, CE Datasheet Product Datasheet Fastron Monitoring/Time Relays Catalogue For items in our catalogue which are not listed online please Contact Us for Possible Replacement Application Notes Relay in 3-phase main monitors size of phase voltage. It is possible to set two independent voltage levels and thus it is possible to set two independent voltage levels and monitor e.g. undervoltage and overvoltage independently. In normal state when voltage is within set levels, output relay is closed and red LED shines. In case voltage exceeds or falls below the set levels, output relay opens and red LED shines ( LED indicates faulty state – flashes when timing). In case supply voltage falls below 60 % Un (UOFF lower level)relay immediately opens without delay and faulty state is indicated by red LED.In case timing is in progress and faulty state is indicated, timing is immediately stopped.

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Fastron FRV 8-06/265, 127 to 265VAC L-N Voltage Monitoring Relay, 3 Phase 4 Wire Over/Under Voltage Detection, 1 x CO SPDT 8 Amp Contact, Fixed 2s Timer Delay, Adjustable Upper and Lower Voltage Limits, Adjustable Asymmetry FRV 8 Series serves to monitor voltage, phase failure and sequence in switchboards, protection of devices in 3-phase 4 wire mains Features Upper and lower level of monitoring voltage Asymmetry Adjustable time delay eliminates short voltage peaks and failures in the main Supply is done from monitored voltage Faulty state is indicated by red LED and by opening of output relay contact Output contact 1 x Changeover / SPDT 10 A /250 V AC1 In case supply voltage falls below 60 %Un (U lower level) relay off immediately opens without delay FRV8-06/460 - supply from all phases which means that relay is functional also in case when one phase is faulty Variant FRV 8-04/265 - supply L1-N, means that relay monitors also failure of neutral wire 1-MODULE, DIN rail mounting Specification Technical Data FRV 8 Supply and measuring L1, L2, L3 (127,132,138,220,230,240,254,265VAC) Supply terminals L1, L2, L3 Supply/measured voltage 3 x 127-265 V (L-N) / 50 Hz Level Umax 105 - 125 % Un Level Umin 75 - 95 % Un Burden max. 2 VA Hysteresis 2 % Max. permanent overload AC 3 x 265 V Peak overload <1ms AC 3 x 265 V Time delay T1 max. 500 ms Time delay T2 adjustable 0.1-10 s Output Number of contacts 1 x changeover/ SPDT (AgNi / Silver Alloy) Current rating 10 A / AC1 Breaking capacity 2500 VA / AC1, 240 W / DC Inrush current 10 A Switching voltage 250 V AC1 / 24 V DC Min. breaking capacity DC 500 mW Indication of state red LED Mechanical life 1 x 107 Electrical life (AC1) 1 x 105 Other information Operating temperature -20 ... +55 °C Storage temperature -30 ... +70 °C Electrical strength 4 kV (supply - output) Operating position any Mounting DIN rail EN 60715 Protection degree IP 40 from front panel / IP 10 terminals Overvoltage cathegory III. Pollution degree 2 Max. cable size (mm )2 solid wire max. 2x2.5 or 1x4 ; with sleeve max. 1x2.5 or 2x1.5 Dimensions 90 x 17,6 x 64 mm Weight 69 g Standards EN 60255-6, EN 61010-1, RoHS, CE, CE Datasheet Product Datasheet Fastron Monitoring/Time Relays Catalogue For items in our catalogue which are not listed online please Contact Us for Possible Replacement Application Notes Relay in 3-phase main monitors size of phase voltage. It is possible to set two independent voltage levels and thus it is possible to set two independent voltage levels and monitor e.g. undervoltage and overvoltage independently. In normal state when voltage is within set levels, output relay is closed and red LED shines. In case voltage exceeds or falls below the set levels, output relay opens and red LED shines ( LED indicates faulty state – flashes when timing). In case supply voltage falls below 60 % Un (UOFF lower level)relay immediately opens without delay and faulty state is indicated by red LED.In case timing is in progress and faulty state is indicated, timing is immediately stopped.

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GIC Controls MG73BQ 3 Phase 4 Wire or Single Phase Voltage Monitoring Relay With DPDT Contacts, Undervoltage, Selectable Overvoltage, 3 x 120-240 VAC Relay control, on 3-phase networks : Overvoltage between phases, Undervoltage between phases Overvoltage between phases and neutral, Undervoltage between phases and neutral, Loss of neutral Multi-voltage Products Controls its own supply voltage True RMS measurement LED status indication 3-phase voltage controllers which monitor : Undervoltage, adjustable from -20 to -2 % of Un Overvoltage, adjustable from 2 to 20 % of Un Measurements are taken between neautral and Phases for MG73BQ MG73BQ and between Phases and Neutral for the H3USN Faults are signalled via LEDs, distinguishing the origin of the fault (one LED for the upper threshold, one LED for the lower threshold). Set the selector switch to the 3-phase network voltage Un. The position of this selector switch is only taken into account when the unit is powered up. If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the voltage selected on energisation prior to the change of position. The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation. Specification GIC Controls Part Number MG73BQ (3 Phase 4 Wire/Single Phase Monitoring Relay With DPDT Contacts) Function Undervoltage/Overvoltage between phases Nominal Voltage 3 x 120 → 3 x 240 V ∿ Digital Outputs 2 x C/O Relays, 250VAC/DC @ 5 Amp Min Breaking Current 10mA/5VDC Timing Range 0.3 → 30s (0, +10%) Delay on Pickup 500ms Alarm Delay on Time (max) 200ms Reset Time 1500ms Fixed Hysteresis 2% of Un Maximum Measurement Cycle Time 150ms/True RMS Measurement Measurement Accuracy 1% Supply Voltage Range Same as Measurement 3 x 220 → 3 x 480 V ∿ Termination Style Screw Weight 170g Certification CE, UL, CSA, GL, ROHS Factory Pack Qty 1 Over Voltage Category 3 in accordance with IEC/EN 60664-1 Pollution Degree 2 in accordance with IEC/EN 61131-2 Protection rating IP40 (Front), IP20 (Rear) Mechanical Resistance Immunity to vibrations IEC/EN 60068-2-6, test Fc Immunity to shock IEC/EN 60068-2-27, test Ea Resistance to HF Interference Immunity to radiated electrostatic fields IEC/EN 61000-4-3 Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3 Immunity to shock waves IEC/EN 61000-4-5 Radio frequency in common mode IEC/EN 61000-4-6, level 3 Voltage dips and breaks (AC) IEC/EN 61000-4-11 Immunity to damped oscillatory waves IEC/EN 61000-4-12 Conducted and radiated emissions Class B (*) in accordance with EN 55022, EN 55011 (CISPR22, CISPR11) group 1 (*) Except configuration (88 970 1.1 or 88 970 1.2) + (88 970 250 or 88 970 270) + 88 970 241 class A (class B in a metal enclosure) Operating Temperature -20 →+70 °C except CB and XB versions in VDC : -30 →+70 °C (+40 °C in a non-ventilated enclosure) in accordance with IEC/EN 60068-2-1 and IEC/EN 60068-22   Datasheet Product Datasheet

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Crouzet Automation 84872152, Single Phase Voltage Control Relay Under/Overvoltage Detection - 17.5 mm MUS, 65-260 VAC/DC Measurement/Supply, Replaces DSR2 Series For under and over voltage monitoring of Single phase AC or DC Voltages 65 to 260V   Features: Control of AC and DC voltages Automatic recognition of AC/DC Measurement ranges from 65 V to 260 V Choice between under and over voltage True RMS measurement Selectable latching (memory) function Specification Crouzet Part Number 84872142 (Single Phase MUSF Voltage Monitoring Relay With Non-Latching SPDT Contacts) Function Undervoltage/Overvoltage Supply Voltage 65 - 260 VAC/DC Measurement Voltage 1 x 15-600VAC/DC Digital Outputs 1 x C/O Relays, 250VAC/DC @ 5 Amp Min Breaking Current 10mA/5VDC Delay on Threshhold Crossing 0.1 → 3s (0, +10%) Delay on Pickup 600ms Alarm Delay on Time (max) 200ms Reset Time 1500ms Adjustable Hysteresis 5 - 50% of Threshhold Maximum Measurement Cycle Time 30ms/True RMS Measurement Measurement Accuracy 1% Supply Voltage Range Same as Measurement Termination Style Screw Weight 170g Certification CE, UL, CSA, GL, ROHS Factory Pack Qty 1 Over Voltage Category 3 in accordance with IEC/EN 60664-1 Pollution Degree 2 in accordance with IEC/EN 61131-2 Protection rating IP40 (Front), IP20 (Rear) Mechanical Resistance Immunity to vibrations IEC/EN 60068-2-6, test Fc Immunity to shock IEC/EN 60068-2-27, test Ea Resistance to HF Interference Immunity to radiated electrostatic fields IEC/EN 61000-4-3 Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3 Immunity to shock waves IEC/EN 61000-4-5 Radio frequency in common mode IEC/EN 61000-4-6, level 3 Voltage dips and breaks (AC) IEC/EN 61000-4-11 Immunity to damped oscillatory waves IEC/EN 61000-4-12 Conducted and radiated emissions Class B (*) in accordance with EN 55022, EN 55011 (CISPR22, CISPR11) group 1 (*) Except configuration (88 970 1.1 or 88 970 1.2) + (88 970 250 or 88 970 270) + 88 970 241 class A (class B in a metal enclosure) Operating Temperature -20 →+70 °C except CB and XB versions in VDC : -30 →+70 °C (+40 °C in a non-ventilated enclosure) in accordance with IEC/EN 60068-2-1 and IEC/EN 60068-22   Datasheet Product Datasheet

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Iskra Doo MVR 54N 400VAC Series Voltage Monitoring Relay MVR 54N Series serves to monitor voltage, phase failure and sequence in switchboards, protection of devices in 3-phase 4 wire mains Features Upper and lower level of monitoring voltage Adjustable time delay eliminates short voltage peaks and failures in the main Supply is done from monitored voltage Faulty state is indicated by red LED and by opening of output relay contact Output contact 1 x Changeover / SPDT 8 A /250 V AC1 In case supply voltage falls below 60 %Un (U lower level) relay off immediately opens without delay MVR 54 - supply from all phases which means that relay is functional also in case when one phase is faulty Variant MVR 54N - supply L1-N, means that relay monitors also failure of neutral wire 1-MODULE, DIN rail mounting Specification Technical Data MVR 54 MVR 54N Supply and measuring L1, L2, L3 L1, L2, L3, N Supply terminals L1, L2, L3 L1, N Supply/measured voltage 3 x 400 V / 50 Hz 3 x 400 V / 230 V /50 Hz Level Umax 105 - 125 % Un Level Umin 75 - 95 % Un Burden max. 2 VA Hysteresis 2 % Max. permanent overload AC 3 x 460 V AC 3 x 265 V Peak overload <1ms AC 3 x 500 V AC 3 x 288 V Time delay T1 max. 500 ms Time delay T2 adjustable 0.1-10 s Output Number of contacts 1x changeover/ SPDT (AgNi / Silver Alloy) Current rating 8 A / AC1 Breaking capacity 2500 VA / AC1, 240 W / DC Inrush current 10 A Switching voltage 250 V AC1 / 24 V DC Min. breaking capacity DC 500 mW Indication of state red LED Mechanical life 1 x 107 Electrical life (AC1) 1 x 105 Other information Operating temperature -20 ... +55 °C Storage temperature -30 ... +70 °C Electrical strength 4 kV (supply - output) Operating position any Mounting DIN rail EN 60715 Protection degree IP 40 from front panel / IP 10 terminals Overvoltage cathegory III. Pollution degree 2 Max. cable size (mm )2 solid wire max. 2x2.5 or 1x4 ; with sleeve max. 1x2.5 or 2x1.5 Dimensions 90 x 17,6 x 64 mm Weight 69 g 67 g Standards EN 60255-6, EN 61010-1 Datasheet Product Datasheet Application Notes Relay in 3-phase main monitors size of phase voltage. It is possible to set two independent voltage levels and thus it is possible to set two independent voltage levels and monitor e.g. undervoltage and overvoltage independently. In normal state when voltage is within set levels, output relay is closed and red LED shines. In case voltage exceeds or falls below the set levels, output relay opens and red LED shines ( LED indicates faulty state – flashes when timing). In case supply voltage falls below 60 % Un (UOFF lower level)relay immediately opens without delay and faulty state is indicated by red LED.In case timing is in progress and faulty state is indicated, timing is immediately stopped.

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Crouzet 84873034, 3 Phase Voltage Monitoring Relay With 17.5mm DPDT Contacts, 3 x 230 - 460 V AC EWS2, Sequence, Failure, OBSOLETE WITH NO DIRECT REPLACEMENT, SEE 84873029 For Possible Replacement EWS2 relays control, on 3-phase networks : Phase Failure Sequence Detection Controls its own supply voltage True RMS measurement LED status indication   Specification Crouzet Part Number 84873034 (3 Phase Voltage Monitoring Relay With DPDT Contacts) Function Phase Sequence, Phase Failure Nominal Voltage 3 x 230 → 3 x 460 V ∿ Digital Outputs 2 x C/O Relays, 250VAC/DC @ 8 Amp Min Breaking Current 10mA/5VDC Timing Range N/A Delay on Pickup 500ms Alarm Delay on Time (max) 200ms Reset Time 1500ms Fixed Hysteresis 2% of Un Maximum Measurement Cycle Time 150ms/True RMS Measurement Measurement Accuracy 1% Supply Voltage Range Same as Measurement 3 x 208 → 3 x 480 V ∿ Termination Style Screw Weight 170g Certification CE, UL, CSA, GL, ROHS Factory Pack Qty 1 Over Voltage Category 3 in accordance with IEC/EN 60664-1 Pollution Degree 2 in accordance with IEC/EN 61131-2 Protection rating IP40 (Front), IP20 (Rear) Mechanical Resistance Immunity to vibrations IEC/EN 60068-2-6, test Fc Immunity to shock IEC/EN 60068-2-27, test Ea Resistance to HF Interference Immunity to radiated electrostatic fields IEC/EN 61000-4-3 Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3 Immunity to shock waves IEC/EN 61000-4-5 Radio frequency in common mode IEC/EN 61000-4-6, level 3 Voltage dips and breaks (AC) IEC/EN 61000-4-11 Immunity to damped oscillatory waves IEC/EN 61000-4-12 Conducted and radiated emissions Class B (*) in accordance with EN 55022, EN 55011 (CISPR22, CISPR11) group 1 (*) Except configuration (88 970 1.1 or 88 970 1.2) + (88 970 250 or 88 970 270) + 88 970 241 class A (class B in a metal enclosure) Operating Temperature -20 →+70 °C except CB and XB versions in VDC : -30 →+70 °C (+40 °C in a non-ventilated enclosure) in accordance with IEC/EN 60068-2-1 and IEC/EN 60068-22   Datasheet Product Datasheet Alternatives 84873029  

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Crouzet 84873029, 3 Phase Voltage Monitoring Relay With 17.5mm SPDT Contacts, 3 x 208 - 480 V AC MWA, Phase Sequence, Total Failure, Can Replace  84892290, 84873034 RMC2 MWS relays control, on 3-phase networks : Sequence Detection Total Phase Failure Controls its own supply voltage True RMS measurement LED status indication 3-phase voltage controllers which monitor : Non Adjustable Specification Crouzet Part Number 84873029 (3 Phase Voltage Monitoring Relay With SPDT Contacts) Function Total Phase Failure, Phase Sequence Nominal Voltage 3 x 208 → 3 x 480 V ∿ Digital Outputs 1 x C/O Relays, 250VAC/DC @ 5 Amp Min Breaking Current 10mA/5VDC Timing Range 0.3 → 30s (0, +10%) Delay on Pickup 500ms Alarm Delay on Time (max) 200ms Reset Time 1500ms Fixed Hysteresis 2% of Un Maximum Measurement Cycle Time 150ms/True RMS Measurement Measurement Accuracy 1% Supply Voltage Range Same as Measurement 3 x 208 → 3 x 480 V ∿ Termination Style Screw Weight 170g Certification CE, UL, CSA, GL, ROHS Factory Pack Qty 1 Over Voltage Category 3 in accordance with IEC/EN 60664-1 Pollution Degree 2 in accordance with IEC/EN 61131-2 Protection rating IP40 (Front), IP20 (Rear) Mechanical Resistance Immunity to vibrations IEC/EN 60068-2-6, test Fc Immunity to shock IEC/EN 60068-2-27, test Ea Resistance to HF Interference Immunity to radiated electrostatic fields IEC/EN 61000-4-3 Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3 Immunity to shock waves IEC/EN 61000-4-5 Radio frequency in common mode IEC/EN 61000-4-6, level 3 Voltage dips and breaks (AC) IEC/EN 61000-4-11 Immunity to damped oscillatory waves IEC/EN 61000-4-12 Conducted and radiated emissions Class B (*) in accordance with EN 55022, EN 55011 (CISPR22, CISPR11) group 1 (*) Except configuration (88 970 1.1 or 88 970 1.2) + (88 970 250 or 88 970 270) + 88 970 241 class A (class B in a metal enclosure) Operating Temperature -20 →+70 °C except CB and XB versions in VDC : -30 →+70 °C (+40 °C in a non-ventilated enclosure) in accordance with IEC/EN 60068-2-1 and IEC/EN 60068-22   Datasheet Product Datasheet

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Crouzet 84873024, 3 Phase Voltage Monitoring Relay With 17.5mm SPDT Contacts, 3 x 208 - 480 V AC MWA, Sequence, Failure, Imbalance (asymmetry), Under/Over MWA relays control, on 3-phase networks : Overvoltage between phases, Undervoltage between phases Asymmetry (Imbalance) Sequence Detection Controls its own supply voltage True RMS measurement LED status indication 3-phase voltage controllers which monitor : Undervoltage, adjustable from -20 to -2 % of Un Overvoltage, adjustable from 2 to 20 % of Un Asymmetry, adjustable from 5 to 15% of Selected Un Presence of the neutral (H3USN only) Measurements are taken between Phases for the H3US M3US and between Phases and Neutral for the H3USN Faults are signalled via LEDs, distinguishing the origin of the fault (one LED for the upper threshold, one LED for the lower threshold). Set the selector switch to the 3-phase network voltage Un. The position of this selector switch is only taken into account when the unit is powered up. If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the voltage selected on energisation prior to the change of position. The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation. Specification Crouzet Part Number 84873224 (3 Phase Voltage Monitoring Relay With SPDT Contacts) Function Undervoltage/Overvoltage between phases Nominal Voltage 3 x 208 → 3 x 480 V ∿ Digital Outputs 1 x C/O Relays, 250VAC/DC @ 5 Amp Min Breaking Current 10mA/5VDC Timing Range 0.3 → 30s (0, +10%) Delay on Pickup 500ms Alarm Delay on Time (max) 200ms Reset Time 1500ms Fixed Hysteresis 2% of Un Maximum Measurement Cycle Time 150ms/True RMS Measurement Measurement Accuracy 1% Supply Voltage Range Same as Measurement 3 x 208 → 3 x 480 V ∿ Termination Style Screw Weight 170g Certification CE, UL, CSA, GL, ROHS Factory Pack Qty 1 Over Voltage Category 3 in accordance with IEC/EN 60664-1 Pollution Degree 2 in accordance with IEC/EN 61131-2 Protection rating IP40 (Front), IP20 (Rear) Mechanical Resistance Immunity to vibrations IEC/EN 60068-2-6, test Fc Immunity to shock IEC/EN 60068-2-27, test Ea Resistance to HF Interference Immunity to radiated electrostatic fields IEC/EN 61000-4-3 Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3 Immunity to shock waves IEC/EN 61000-4-5 Radio frequency in common mode IEC/EN 61000-4-6, level 3 Voltage dips and breaks (AC) IEC/EN 61000-4-11 Immunity to damped oscillatory waves IEC/EN 61000-4-12 Conducted and radiated emissions Class B (*) in accordance with EN 55022, EN 55011 (CISPR22, CISPR11) group 1 (*) Except configuration (88 970 1.1 or 88 970 1.2) + (88 970 250 or 88 970 270) + 88 970 241 class A (class B in a metal enclosure) Operating Temperature -20 →+70 °C except CB and XB versions in VDC : -30 →+70 °C (+40 °C in a non-ventilated enclosure) in accordance with IEC/EN 60068-2-1 and IEC/EN 60068-22   Datasheet Product Datasheet Application Notes Legend 1 Overvoltage 2 Hysteresis 3 Undervoltage 4 Phases L1, L2, L3 5 Relay R1 6 Relay R2 7 Overvoltage threshold delay 8 Undervoltage threshold delay         The relay monitors its own supply voltage. It controls : Undervoltage, adjustable from - 2 to - 20 % of Un (-2 to -12 % over the 3 x 220 V ∿ range due to the minimum voltage 194 V ∿) Overvoltage, adjustable from + 2 to +20 % (+2 to +10 % over the 3 x 480 V ∿ range due to the maximum voltage 528 V ∿). Each threshold has its own time delay with independent setting between 0.3 and 30 s. In the event of a voltage fault, the corresponding relay (one undervoltage output/one overvoltage output) opens at the end of the time delay set by the user. In the event of phase failure, both relays open instantaneously, without waiting for the end of the time delay. The two relay LEDs go out. The relay monitors its own supply voltage. It controls : Presence of the neutral, - Undervoltage, adjustable from -2 to -20 % of Un, - Overvoltage, adjustable from +2 to +20 %. Each threshold has its own time delay with independent setting between 0.3 and 30 s. In the event of a voltage fault, the corresponding relay (one undervoltage output/one overvoltage output) opens at the end of the time delay set by the user. If neutral is lost, both relays open instantaneously and the corresponding LED is extinguished, without waiting for the end of the time delay. The two relay LEDs are extinguished.  

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