Page 22 - Essailec Test Blocks

Current transformers application
Make before break test principle - With 2x4 poles test plug (4 poles short-circuited)

Applications
• Measurement on CT’s
• Injection
• Equipment replacement

1. Normal service 2. Preparation: plug and lid

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1.1 ESSAILEC current 1.2 The lid is installed on 2.1 2.1 The lid is removed. 2.2 Connect the ESSAILEC test
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sockets allow the The lid is removed. plug leads to the test set.
3
simultaneous testing op- equipment side (1-2-3-4). The This plug is equipped with a built-in
erations of 1 to 4 socket and can be sealed to short-circuiting on
independent circuits prevent unauthorized ac- equipment side (1-2-3-4).
on the same socket. cess. The socket circuits are
closed and signals flow from
current transformers to the
equipment to be tested.

2

Preparation

1

Normal
service
5. Back to normal service

5
Back to
normal
service

5.1 Plug removal closes back the socket 5.2 Lid is put back in place.
contacts and signals flow again through
the socket.

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INDUSTRIAL /// ENTRELEC - ESSAILEC TEST BLOCKS