Manualshelf

Datasheet

ManualsBrandsCrouzet ManualsMonitoring RelaysVoltage Monitoring Relay
123
The relay monitors its own supply voltage.
It controls:
- Undervoltage, adjustable from - 2 to - 20% of Un (-2 to -12% over the 3 x 220 V AC range due to the minimum voltage 194 V AC)
- Overvoltage, adjustable from + 2 to +20% (+2 to +10% over the 3 x 480 V AC range due to the maximum voltage 528 V AC).
Each threshold has its own time delay with independent setting between 0.3 and 30 s.
In the event of a voltage fault, the corresponding relay (one undervoltage output/one overvoltage output) opens at the end of the time delay set by the user.
In the event of phase failure, both relays open instantaneously, without waiting for the end of the time delay. The two relay LEDs go out.
The relay monitors its own supply voltage.
It controls:
- Presence of the neutral,
- Undervoltage, adjustable from -2 to -20% of Un,
- Overvoltage, adjustable from +2 to +20%.
Each threshold has its own time delay with independent setting between 0.3 and 30 s.
In the event of a voltage fault, the corresponding relay (one undervoltage output/one overvoltage output) opens at the end of the time delay set by the user.
If neutral is lost, both relays open instantaneously and the corresponding LED is extinguished, without waiting for the end of the time delay. The two relay LEDs are extinguished.
H3US - H3USN - Under/Overvoltage
N
o
Legend
1
Overvoltage
2
Hysteresis
3
Undervoltage
4
Phases L1, L2, L3
5
Relay R1
6
Relay R2
7
Overvoltage threshold delay
8
Undervoltage threshold delay
N
o
Legend
1
100 mA fast-blow fuse or cut-out
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
13/03/2012 www.crouzet.com