02/11/2015 www.crouzet.com DIN Rail Mount - 17.5 mm / 35 mm 3-phase voltage control M3US Part number 84873222 H3US and M3US relays control, on 3-phase networks: - overvoltage between phases, - undervoltage between phases The H3USN relay controls, on 3-phase networks: - 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 Part numbers Type Function Nominal voltage (V) Output 84873222 M3US Under/overvoltage between phases 3x2083x480VAC* 1 single pole changeover relay Specifications Supply AC supply voltage frequency 50 / 60Hz 10% Galvanic isolation of power supply/measurement No Immunity from micro power cuts 20 ms Inputs and measuring circuit Frequency of measured signal 5060Hz 10% Max. measuring cycle time 150 ms/True RMS measurement Fixed hysteresis 2% of Un (M3US, H3US) Display precision 3% of the displayed value Repetition accuracy with constant parameters 0,5% Measuring error with voltage drift < 1% across the whole range Measuring error with temperature drift 0,05% /C Timing Delay on threshold crossing 0,330s(0,+10%) Repetition accuracy with constant parameters 3% Reset time 1500 ms Delay on pick-up 500 ms Alarm on delay time max. 200 ms Output Type of contacts No cadmium Maximum breaking voltage 250 V AC/DC Max. breaking current 5 A AC/DC Min. breaking current 10mA / 5 V DC 5 Electrical life (number of operations) 1 x 10 Breaking capacity (resistive) 1250 VA AC Maximum rate 360 operations/hour at full load Operating categories acc. to IEC/EN 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14 6 Mechanical life (operations) 30 x 10 Insulation Nominal insulation voltage IEC/EN 60664-1 400 V Insulation coordination (IEC/EN 60664-1) Overvoltage category III: degree of pollution 3 Rated impulse withstand voltage (IEC/EN 60664-1) 4 KV (1,2 / 50 s) Dielectric strength (IEC/EN 60664-1) 2 kV AC 50Hz 1 min Insulation resistance (IEC/EN 60664-1) > 500 M/ 500 VDC General characteristics Display power supply Green LED Mounting On 35 mm symmetrical DIN rail, IEC/EN 60715 Mounting position All positions Material: enclosure plastic type VO to UL94 standard Incandescent wire test according to IEC/EN 60695-2-11 Protection (IEC/EN 60529) Terminal block: IP 20 Casing: IP30 2 2 2 Connecting capacity IEC/EN 60947-1 Rigid: 1 x 4 - 2 x 2.5 mm 1 x 11 AWG - 2 x 14 AWG 2 2 2 Flexible with ferrules: 1 x 2.5 - 2 x 1.5 mm 1 x 14 AWG - 2 x 16 AWG Max. tightening torques IEC/EN 60947-1 0,61Nm /5,38,8Lbf.Ft Operating temperature IEC/EN 60068-2 -20+50C Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected02/11/2015 www.crouzet.com Storage temperature IEC/EN 60068-2 -40+70C Humidity IEC/EN 60068-2-30 2 x 24 hr cycle 95% RH max. without condensation 55C Vibrations according to IEC/EN60068-2-6 10150Hz,A=0.035mm Shocks IEC/EN 60068-2-6 5 g Standards Product standard IEC/EN 50178 Electromagnetic compatibility (EMC) IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4 Certifications CE, UL, CSA, GL Conformity with environmental directives RoHS Supply Supply voltage Un 3x2083x480VAC* Voltage supply tolerance -12% / +10% Operating range 183528VAC Power consumption at Un 1,8 VA (AC) Inputs and measuring circuit Measurement ranges 183528VAC Selection of phase-phase nominal voltage Un 208-220-380-400-415-440-480 V AC Voltage threshold adjustment Undervoltage -2 to -20% of selected Un (-2-12% across the 3 x 208 V range) (-2-17% across the 3 x 220 V range) Overvoltage220%ofselectedUn (+2+10%acrossthe3x480VACrange) Output Type of output 1 single pole changeover relay General characteristics Display relay Yellow LED Casing 17,5 mm Weight 80 g Comments Accessories Description Code Removable sealable cover for 17.5 mm casing 84800000 Principles Overview 3-phase voltage controllers which monitor: - Undervoltage, adjustable from -20 to -2%of Un - Overvoltage, adjustable from 2 to 20%of 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). Voltage selector switch: 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. Principles Operating principle M3US The relay monitors its own supply voltage. It controls: Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected