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Characteristics
Main range of product Zelio Controlproduct or component type Industrial measurement and control relaysrelay type Voltage measurement relayrelay name RM4Urelay monitored parameters Overvoltage or undervoltage detectiontime delay Withoutpower consumption in VA 2 VA ACmeasurement range <= 80 ms cycle1...10 V voltage AC 50/60 Hz1...10 V voltage DC10...100 V voltage AC 50/60 Hz10...100 V voltage DC5...50 V voltage AC 50/60 Hz5...50 V voltage DCcontacts type and composition 1 C/OComplementary maximum switching voltage 440 V AC[Us] rated supply voltage 24 V AC, 50/60 Hz +/- 5 %output contacts 1 C/Ointernal input resistance 112000 Ohm225000 Ohm23000 Ohmpermissible continuous overload 150 V300 V90 Vpermissible non repetitive overload 100 A for <= 1 s200 A for <= 1 s400 A for <= 1 ssetting accuracy of the switching threshold +/-5 %switching threshold drift <= 0.06 % per degree centigrade depending permissible ambient air temperature<= 0.5 % within the supply voltage range (0.85...1.1 Un)setting accuracy of time delay 10 Physteresis 5...30 % adjustable of voltage threshold settingquality labels CEovervoltage category III conforming to IEC 60664-1[Ui] rated insulation voltage 500 V conforming to IECoperating voltage tolerance 0.85...1.1 Ucsupply disconnection value > 0.1 Ucoperating position Any position without deratingconnections - terminals Screw terminals 2 x 1.5 mm², flexible cable with cable endScrew terminals 2 x 2.5 mm², flexible cable without cable endtightening torque 0.6...1.1 N.mmechanical durability 30000000 cycles[Ith] conventional free air thermal current 8 A[Ie] rated operational current 2 A at 24 V DC-13 70 °C conforming to IEC 60947-5-1/19912 A at 24 V DC-13 70 °C conforming to VDE 06603 A at 115 V AC-15 70 °C conforming to IEC 60947-5-1/19913 A at 115 V AC-15 70 °C conforming to VDE 06603 A at 24 V AC-15 70 °C conforming to IEC 60947-5-1/19913 A at 24 V AC-15 70 °C conforming to VDE 06603 A at 250 V AC-15 70 °C conforming to IEC 60947-5-1/19913 A at 250 V AC-15 70 °C conforming to VDE 06600.1 A at 250 V DC-13 70 °C conforming to IEC 60947-5-1/19910.1 A at 250 V DC-13 70 °C conforming to VDE 06600.3 A at 115 V DC-13 70 °C conforming to IEC 60947-5-1/19910.3 A at 115 V DC-13 70 °C conforming to VDE 0660switching capacity in mA 10 mA at 12 Vswitching voltage 250 V ACcontacts material 90/10 silver nickel contactsnumber of cables 2height 78 mmwidth 22.5 mmdepth 80 mmterminals description ISO n°1 (15-16-18)OC(A1-A2)CO(C-B1-B2-B3)COoutput relay state Tripped if A measured > A set9 mm pitches 2.5product weight 0.168 kgEnvironment electromagnetic compatibility Electrostatic discharge - test level 6 kV, level 3 - contact discharge conforming to IEC 61000-4-2standards EN/IEC 60255-6product certifications CSAGLULdirectives 89/336/EEC - electromagnetic compatibility73/23/EEC - low voltage directiveambient air temperature for storage -40...85 °Cambient air temperature for operation -20...65 °Crelative humidity 15...85 % 3K3 conforming to IEC 60721-3-3vibration resistance 0.35 ms (f = 10...55 Hz) conforming to IEC 60068-2-6shock resistance 15 gn for 11 ms conforming to IEC 60068-2-27IP degree of protection IP20 (terminals) conforming to IEC 60529IP50 (casing) conforming to IEC 60529pollution degree 3 conforming to IEC 60664-1dielectric test voltage 2.5 kVnon-dissipating shock wave 4.8 kVresistance to electrostatic discharge 6 kV contact conforming to IEC 61000-4-2 level 38 kV air conforming to IEC 61000-4-2 level 3resistance to electromagnetic fields 10 V/m conforming to IEC 61000-4-3 level 3resistance to fast transients 2 kV conforming to IEC 61000-4-4 level 3protection against electric shocks 2 kV : level 3 conforming to IEC 61000-4-5disturbance radiated/conducted CISPR 11 group 1 - class ACISPR 22 - class AContractual warranty Warranty period 18 months -
Documents and Downloads
Language- English
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Catalogue PageSizeAdd to My DocumentsRelais de mesure de tension RM4 UA (Version 11.0)End of Life InformationSizeAdd to My DocumentsRM4 Control relay & RMC/ P/ T Analog relays, Product End-of-Life Instructions (Version 1.0)Date 12/14/17Size 101.8 KB -
Technical FAQs
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Dimensions Drawings
Voltage Measurement RelaysDimensions -
Mounting and Clearance
Voltage Measurement RelaysRail mountingScrew fixing -
Connections and Schema
Voltage Measurement RelaysRM4UA01 and RM4UA02 Wiring DiagramA1-A2Supply voltageB1, B2, B3, CVoltages to be measured (see table below)Connection and current values to be measured
RM4UA•1
B1-C
0.05…0.5 V
B2-C
0.3…3 V
B3-C
0.5…5 V
RM4UA•2
B1-C
1…10 V
B2-C
5…50 V
B3-C
10…100 V
RM4UA03 Wiring DiagramA1-A2Supply voltageB2, B3, CVoltages to be measured (see table below)Connection and current values to be measured
B2-C
30…300 V
B3-C
50…500 V
RM4UA31 and RM4UA32 Wiring DiagramA1-A2Supply voltageB1, B2, B3, CVoltages to be measured (see table below)Connection and current values to be measured
RM4UA•1
B1-C
0.05…0.5 V
B2-C
0.3…3 V
B3-C
0.5…5 V
RM4UA•2
B1-C
1…10 V
B2-C
5…50 V
B3-C
10…100 V
RM4UA33 Wiring DiagramA1-A2Supply voltageB2, B3, CVoltages to be measured (see table below)Connection and current values to be measured
B2-C
30…300 V
B3-C
50…500 V
Voltage Measurement RelaysApplication SchemeExample: overspeed monitoring (undervoltage function)
(1)Tachogenerator(2)Overspeed -
Performance Curves
Electrical Durability and Load Limit CurvesAC LoadCurve 1: Electrical durability of contacts on resistive load in millions of operating cycles
XCurrent broken in AYMillions of operating cyclesCurve 2: Reduction factor k for inductive loads (applies to values taken from durability Curve 1)
XPower factor on breaking (cos φ)YReduction factor KDC LoadLoad limit curve
XCurrent in AYVoltage in V1L/R = 20 ms2L/R with load protection diode3Resistive load -
Technical Description
Function DiagramOvervoltage ControlFunction “>”
Legendt Time delay
U A1-A2 Supply voltage
US1 Setting voltage threshold
US2 Voltage measured
15-18, 15-16; 25-28, 25-26 Output relays connections
Relay status: black color = energized.