Page 34 - Essailec Test Blocks

Voltage transformers application
Make before break test principle - With 2x4 poles test plug

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

1. Normal service 2. Preparation: plug and lid

®
1.1 ESSAILEC voltage sockets 1.2 The lid is installed on the 2.1 The lid is removed. 2.2 Connect the ESSAILEC test
®
allow the simultaneous socket and can be sealed to plug leads to the test set.
testing operations of 1 to 4 in- prevent unauthorized ac-
dependent circuits on the cess. The socket circuits
same socket. are closed and signals flow
from
current transformers
4
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.

INDUSTRIAL /// ENTRELEC - ESSAILEC TEST BLOCKS
®