Woodward
Technical Manual WIC1
26
DOK-TD-WIC1E, Rev. L
5.6 Inputs and outputs
The terminals for connection of the CT, the tripping coil of the external trip input as well as the flag indicator output
are provided at the left side of the WIC1. Dependent on the relay type either screw-type terminals or screw-type
plug-in terminals in 4-block arrangement are used. Manufacturer of both terminal types is Phönix.
A cover serves as protection against accidental contact and prevents unintended loosening of the plug in terminal
connections. Terminal marking is durable embossed in the housing.
5.6.1 Remote trip input*
To the four terminals of the top terminal block 230V~; 115V~; 0V~ and PE the relevant aux. voltage for the remote
trip input is connected. This input is electrically isolated and can be loaded continuously.
Terminal PE is the central earthing point for the protective system.
Technical Data:
Input voltage range:
230 V ± 15%
115 V ± 15%
Tripping delay:
≤ 1 s
5.6.2 Impulse output for the tripping coil
The energy-low tripping coil of the circuit breaker is connected to terminals TC+ and TC- of the second terminal
block. The trip energy is provided by a capacitor store integrated in the protection relay. Length of the trip impulse
is 50ms; the pause between the individual pulses depends on the impedance of the tripping coil and the current
level. Pulsing is continued until the activation threshold is undershot.
Technical Data:
Trip energy:
E
≥ 0.1 Ws
Voltage:
≥ 24 V DC
It is not allowed to connect any active voltage to the trip coil output.
5.6.3 Earthing
The fourth terminal (PE) of the top terminal block is the central earth connection point of the protection system.
