111 • Test Procedure for Low Voltage Testing
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The Test Harness is equipped with a long warning tape, intended to prevent forgetting it connected.
Never cut this warning tape. Leave the warning tape open for its full length and laid in such a way
that the harness will not be connected accidentally after the low voltage test.
As a rule, always disconnect the harness immediately after ending the low voltage test. It should be
mounted inside a small plastic bag in the drawing pocket mounted on the front door.
Refer to Figure 48 below.
EPT-Tx – bus bars in front of the EPT-Tx Test harness
Figure 48 – HRVS-DN up to 6.6kV – EPT-Tx and Test Harness
12.3.2.2 Test Harness Installation in HRVS-DN from 10kV and up
The Test Harness includes three colored wires: blue, red and green.
These wires are used to change the resistor voltages dividing ratio in the EPT-Tx (Electronic Potential
Transformer Transmitter).
At one end of each colored wire there is banana plug with the same color as the wire.
At the other end of the blue wire there is an alligator clip.
The other end of the red and green wires are clamped together and connected to a second alligator clip.
On the front side of the EPT-Tx you will see three colored round stickers: blue, red and green.
These stickers are located near three small holes. These holes have internal banana jacks for the banana
plugs.
Connect the three banana plugs to the banana jacks near the colored stickers at the front side of the EPT-Tx.
Ensure that the wire and banana plugs colors match the round sticker near the hole.
Connect the alligator clip marked “1”, with blue wire to phase L1.
Connect the alligator clip marked “3”, with red and green wires to phase L3.
The Test Harness is equipped with a long warning tape, intended to prevent forgetting it connected. Never cut
this warning tape. Leave the warning tape open for its full length and laid in such a way that the harness will
not be connected accidentally after the low voltage test.
As a rule, always disconnect the harness immediately after ending the low voltage test. It should be mounted
inside a small plastic bag in the drawing pocket mounted on the front door.
Refer to
Figure 49 below.
EPT-Tx – EPT-Tx in front of the busbars Test harness
Figure 49 – HRVS-DN From 10kV and up – EPT-Tx and Test Harness
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