Protection Relay – VIP410

REL59917 VIP410 E 110…250 V DC, 100…240 V AC
VIP410 protection relays are designed for the protection and operation of MV/LV utility
substations and electrical distribution networks in industrial installations.
They are suitable for typical protection applications that require current metering, phase overcurrent and
earth fault protection, and thermal overload protection.
The VIP400 is a relay with a self-powered supply. It is powered by its current sensors and operates
without an auxiliary power supply.
The VIP410 is a relay with a dual power supply. It is powered both by its current sensors, just like the
VIP400, and also by an auxiliary power supply. The protection functions work autonomously, like those
on the VIP400.
With the VIP410, the auxiliary power supply is needed for the communication, the output relays and the
very sensitive earth fault protection to work. The VIP410 protection functions work even if the auxiliary
power supply fails.

VIPs operate exclusively with dual core CUa (200 A primary) and CUb (630 A primary) current sensors.
These sensors provide:
 the VIP power supply
 metering of all 3 phase currents and the earth fault current
The use of dedicated sensors means the complete protection chain performance (sensor, VIP, Mitop trip
unit) can be guaranteed.
It is very easy to connect VIP relays to the CUa or CUb sensors by means of 2 prewired connectors from
the sensors:
 1 x 9-pin SUBD connector for metering the phase and earth fault currents
 1 x 6-pin lockable connector for the VIP power supply
The CUa and CUb current sensors consist of 2 windings per phase, one winding providing the VIP power
supply, the other winding enabling the VIP to measure the phase currents. The earth fault current is
measured by taking the sum of the 3 phase currents inside the sensor.