
Specifications are subject to change without notice (26.10.99)
1
Current and Voltage Controls
3-Phase Asymmetrical Relay
Type H 471
Product Description
3-phase monitoring relay for
DIN-rail mounting for phase
sequence, phase loss, phase
asymmetry and phase angle.
Ordering Key
Housing
Type
Output
Power supply
Frequency
Type Selection
Plug
Output
Freq.
Supply: 220 VAC
Supply: 380 VAC
Supply: 400 VAC
Supply: 415 VAC
Screw
terminals
SPDT
50 Hz
60 Hz
H 471 156 220-50 Hz
H 471 156 220-60 Hz
H 471 156 380-50 Hz
H 471 156 380-60 Hz
H 471 156 400-50 Hz
H 471 156 400-60 Hz
H 471 156 415-50 Hz
H 471 156 415-60 Hz
Mains network quality and load monitoring
relay
Monitors phase sequence, phase loss, phase
asymmetry and phase angle
Measures asymmetry on 3-ph. voltage without neutral
Built-in adjustable timer function
Knob-adjustable asymmetry sensitivity
Output: 10 A SPDT relay
For mounting on DIN-rail in accordance with
DIN/EN 50 022
H4-housing
LED-indication for power supply and output ON
Power supply is the 3-phased measuring voltage
Input Specifications
Input
Terminal 22
Terminal 23
Terminal 24
Phase L3
Phase L2
Phase L1
measures on own supply
Output
Rated insulation voltage
SPDT relay
250 VAC (rms)
(cont./elect.)
μ (micro gap)
10 A/250 VAC (2500 VA)
1 A/250 VDC (250 W)
10 A/25 VDC (250 W)
2.5 A/230 VAC
5 A/24 VDC
≥
30 x 10
6
operations
≥
2.5 x 10
5
operations
(at max. load)
≤
7200 operations/h
Contact ratings
(AgCdO)
Resistive loads
AC 1
DC 1
or
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
AC 1
Operating frequency
Dielectric strength
Dielectric voltage
Rated impulse withstand volt.
≥
2 kVAC (rms) (cont./elect.)
4 kV (1.2/50 μs) (cont./elect.)
(IEC 60664)
Power supply AC types
Rated operational voltage
Through term. 22, 23 & 24
Overvoltage cat. III (IEC 60664)
(IEC 60038)
220
3 x 220 VAC ± 15%,
50 or 60 Hz
3 x 380 VAC ± 15%,
50 or 60 Hz
3 x 400 VAC ± 15%,
50 or 60 Hz
3 x 415 VAC ± 15%,
50 or 60 Hz
≤
40 ms
None (supply/elect.)
380
400
415
Voltage interruption
Dielectric voltage
Rated impulse withstand volt. 4 kV (1.2/50 μs) (line/neutral,
line/line), direct connection
to electronics
3 VA
Rated operational power
Often used to control phase
asymmetry in order to pre-
vent any damage to the con-
nected motors.
Output Specifications
Supply Specifications
H 471 156 380-50 Hz