www.crouzet.com 84873221-H3USN 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 Supply AC supply voltage frequency 50 / 60 Hz 10% Galvanic isolation of power supply/measurement No Inputs and measuring circuit Frequency of measured signal 5060Hz 10% Max. measuring cycle time 150 ms/True RMS measurement Voltage threshold adjustment Undervoltage -2 to -20% of selected Un for M3US: (-2 to -12% across the 3 x 208 V range) (-2 to -17% across the 3 x 220 V range) for H3US: (-2 to -12% across the 3 x 220 V range) Overvoltage220%ofselectedUn For M3US and H3US: (+2+10%acrossthe3x480VACrange) 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 thresold crossing Tt 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 10 mA / 5 V DC Breaking capacity (resistive) 1250 VA AC Maximum rate 360 operations/hour at full load Operating categories acc. to IEC 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 60664-1 400 V Insulation coordination (IEC 60664-1 / 60255-5) Overvoltage category III: degree of pollution 3 Rated impulse withstand voltage IEC 60664-1/60255-5 4 KV (1,2 / 50 s) Dielectric strength IEC 60664-1/60255-5 2 kV AC 50 Hz 1 min Insulation resistance IEC 60664-1 / 60255-5 > 500 M/ 500 VDC General characteristics Display power supply Green LED Display relay Yellow LED (1 for M3US, 2 for H3US and H3USN) 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 60695-2-11 & NF EN 60695-2-11 Protection (IEC 60529) Terminal block: IP 20 Casing: IP30 2 2 2 Connecting capacity IEC 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 60947-1 0,61Nm /5,38,8Lbf.Ft 12/11/2009www.crouzet.com Operating temperature IEC 60068-2 -20+50C Storage temperature IEC 60068-2 -40+70C Humidity IEC 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 60068-2-6 5 g Standards Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC Product standard NF EN 60255-6 / CEI 60255-6 / UL 508 / CSA C22.2 N14 Electromagnetic compatibility Immunity EN 61000-6-2/IEC 61000-6-2 Emission EN 61000-6-4/EN 61000-6-3 IEC 61000-6-4/IEC 61000-6-3 Emission EN 55022 class B Certifications UL, CSA, GL Conformity with environmental directives RoHS, WEEE Supply Supply voltage Un 3x1203x277VAC* Voltage supply tolerance -20% / +20% Operating range 96332VAC Power consumption at Un 3.9 VA in AC Inputs and measuring circuit Selection of phase-phase nominal voltage Un - Selection of phase-neutral voltage 120-127-220-230-240-260-277 Output 4 Electrical life (number of operations) 1 x 10 General characteristics Casing 35 mm Weight 130 g Comments * 3-phase mains with earth Description Code Removable sealable cover for 35 mm casing 84800001 Dimension Diagram : H3US - H3USN : 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). 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. : H3US - H3USN - Under/Overvoltage H3US - H3USN - Under/Overvoltage 12/11/2009