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Cables test deviceFBX

Secondary Distribution Switchgear

Instructions

1 General

Additional information to that given in

instruction manuals AMTNoT131-02

and AMTNoT132-02.

� Apply the general safety instructions for

electrical locking-out operations and the

special rules for the network concerned.

� The operations described below are

carried out on de-energized equipment.

2 Presentation

Each Functional Unit C is equipped with a cables

test device.

This device allows for cable testing or searching

for a fault on the cables, whilst avoiding the with‐

drawal of the plug-in connectors. It is protected

by a mobile panel (1) locked by a key-bit key (2).

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3 Intervention conditions for a cables test

Intervention Busbar Cables Switch Earthing switch

Normale De-energized De-energized Open Closed

Possible Energized De-energized Open Closed

Locking out of the Functional UnitAny locking-out operation must be carried outin accordance with the special rules for thenetwork concerned.

Tools necessary:- Open-ended spanner size 10; 16- Ratchet wrench + extension + 13 mm socket

Accessories not supplied:- Earthing device- Insulating gloves

4 Preparation for the cables test

� Lock-out Functional Unit C:switch open, earthing switch closed.

� Insert and turn the key.� Lift the pull control device to unlock the

panel.

� Pull out the panel towards you.

� Extract the panel and leave it to hang atthe end of its earth connection wire.

� Presentation of the device.

0 Key

- 1 Phase ID mark

- 2 Place for screwing in theextension

- 3 Earthing braid

- 4 Earthing bar

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5 Fitting the earthing braids in place

CAUTIONThe dismantling of the earthing bar must onlybe made when the earthing block isconnected and in place.

� Recover the 3 extensions. � Screw in and tighten each extension

(10 mm open-ended spanner).

8Nm

� The 3 extensions screwed on preventthe panel from being fitted back on.

� Position the main grounding clamp onthe earthing bar.

� Tighten the grounding clamp.

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� Position and tighten the groundingclamps on each phase.

Ensure that the clamps are positioned asshown in the 2 following views.

CAUTION

� The tightening clamps must be vertical,directed towards the bottom.

� Position the clamps at the end of eachextension.

� Unscrew the 3 fixing nuts on the earthingbar (16 mm spanner).Note: These 3 nuts shall need to be

tightened to torque.

� Extract the earthing bar. � Leave the bar to hang at the end of theearthing braid.

� Example of a test on phase L3:- Fit the insulating gloves,- Loosen the clamp.

� Proceed with the test on L3.

Schneider Electric Energy France

35, rue Joseph Monier

CS 30323

F - 92506 Rueil-Malmaison Cedex

RCS Nanterre 511 746 356

Capital social 6 909 620 €

www.schneider-electric.com

AMTNoT158-02 revision: 01

As standards, specifications and designs change from time to time, please ask for confirmationof the information given in this publication.

Design: Schneider Electric

Photos: Schneider Electric

12-2010

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6 At the end of the tests

� Position the earthing bar back in place. � Tighten the 3 nuts to the indicatedtorque.

The efficiency of the short circuiting of thecable heads, depends on the tightening ofthe earthing bar.

8Nm

CAUTION

8Nm

� Remove all of the grounding clamps, oneach phase and on the earthing bar.

� Remove the 3 extensions.

� Store the accessories.� Refit the panel in place.