Datasheet

3 - phase voltage control relay - 17.5 mm / 35 mm H3US Part number 84873220
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
Type
Function
Nominal voltage (V)
Output
84873222
M3US
Under/overvoltage between phases
3x208→3x480VAC
1 single pole changeover relay
84873220
H3US
Under/overvoltage between phases
3x220→3x480VAC
2 single changeover relays / one per threshold
84873221
H3USN
Over and undervoltage between phases and neutral / loss of neutral
3x120→3x277VAC
2 single changeover relays / one per threshold
Supply
AC supply voltage frequency
50 / 60 Hz ± 10%
Galvanic isolation of power supply/measurement
No
Inputs and measuring circuit
Frequency of measured signal
50→60Hz ± 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)
Overvoltage2→20%ofselectedUn
For M3US and H3US:
(+2→+10%acrossthe3x480VACrange)
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
0,3→30s(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/EN 60947 -5-1
AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations)
30 x 10
6
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 μ s)
Dielectric strength (IEC/EN 60664 -1)
2 kV AC 50 Hz 1 min
Insulation resistance (IEC/EN 60664 -1)
> 500 M Ω / 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/EN 60529)
Terminal block: IP 20
Casing: IP30
Connecting capacity IEC/EN 60947 -1
Rigid: 1 x 4
2
- 2 x 2.5
2
mm
2
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
13/03/2012 www.crouzet.com