©2004 AUGIER SA.
I-24
I.6.2 CUT OUT AND EARTHING PLATE (OPTION)
AUGIER’s experience regarding CCRs has been used to simplify the HV compartment and maintenance
operations to the maximum.
With that option, the CCR is equipped with an cut-out and earthing plate, using two jumpers which allows
to carry out all maintenance and measurement operations, without unscrewing any load terminal or earth
connection, and without requiring any special tools.
I.6.2.1 Normal position :
It is the operational position.
If the two 3 pins jumpers are in that position (vertically), the loop’s terminals are
linked to the output of the CCR :
I.6.2.2 Safety
position:
By removing the two jumpers from the previous operating position as above, the CCR will be
disconnected from the loop in a safe and clearly visible way. Then, placing the two jumpers in horizontal
position, CCR’s output and the two loop’s terminals (still isolated) will be short-
circuited, while the third pin of each jumper make an earth connection.
L
This is the safe position, allowing works to be carried out on the field : CCR
is short-circuited to the earth, and separately from the loop, also short-
circuited and earthed.
L
WARNING : Although the CCR and the loop are earthed, the CCR can be
switched ON : In that case, it regulates a constant current through the upper
jumper.
I.6.2.3 Load
measurements:
Removing the lower jumper, CCR will be still short-circuited and earthed, but loop’s terminals will be let
free, in order to allow to proceed at all insulation and continuity measurements, which can be carried out as well
as any other testing or research operations concerning the load.
L
This is the measurement position of the cut-out plate.
L
WARNING : Although the CCR and the loop are isolated, the CCR can be switched ON : In the case
where the two jumpers are removed, it should fail in “Open Circuit”.
CAUTION:
In order to avoid damaging the pins of the jumpers, do not push or pull it
asymmetrically from the sockets : They must be placed or withdrawn with the two
hands, distributing efforts at each end so that its movement remains perpendicular to
the plate, the body remaining parallel with the plate.