13
5. EQUIPMENT
5.1 Current tap Selection
MIT relays are suitable for 1A or 5A application. However the relays are internally wired
for either 1A or 5A as per the customer requirement. Internal wiring are to be changed
(Faston crimp connections) for changing the relay rating from one to other.
To ensure the current rating (I
R
) of the relay, check the connection of CT wires connected
to the bottom TB (Terminal Block) at the rear of the chassis as per the following table:
For 1A
Terminal No.
of TB
Ferrule No. of CT
wire(Black)
11
11A
For 5A
Terminal No.
of TB
Ferrule No. of CT
wire(Black)
11
11B
Following are the steps to change the current rating of the relay from 1A to 5A.
1.
Identify 11
th
terminal from number strip on bottom terminal block at the rear of
the chassis.
2. The black colour wire “11A” is inserted to 11
th
terminal of TB.
3. First, carefully lift the PVC boot of the wire by means of a tool (like nose
Plier) to expose terminal 11A.
4.
Hold the crimp by means of the same tool at the crimp point and lift to remove
from the fixed terminal. Remove the “11B” wire from the terminal parking rack
(fixed on terminal block) and insert the crimp of “11B” wire on to the terminal No.11
by means of the tool. Insert "11A” wire back to the terminal parking rack.