DISCONNECT & TEST
Example for CDS6U Test & Disconnect Terminal Block
SCREW TERMINAL BLOCKS
Single Phase Current Transformer Test Circuit
3 Phase current Transformer Test Set
LCCDS
EPCDS6U
SLS2
EPCDS66
CA72315
LCCDS
CDS6U
CA202
SLS2
CDSGU
CA202
Operating status
Operating status
A
1
2
A
A
A
1
2
1
2
3
4
5
6
(with internal distribution
of the k-point)
S1
S2
S1
S2
S1
S2
S1
S2
SLS2 in open condition
SLS2 in open condition
L1
L1
L2
L3
Comparison measurement for L1
Comparison measurement for L1
A
1
2
A
A
A
Sequence for test :
Sequence for test :
1
2
1
2
3
4
5
6
1) Remove SLS2 screw from terminal 2.
2) Connect ammeter to test sockets of terminal 2.
3) Open disconnect slide link of terminal 2.
1) Remove SLS2 screw from
terminal 1.
2) Connect ammeter to test
sockets of terminal 1 and 2.
A
A
3) Open disconnect slide link
of terminal 1.
S1
S2
S1
S2
S1
S2
S1
S2
L1
SLS2 in open condition
L1
L2
L3
Meter test for L1 through external power supply
Meter test for L1 through external power supply
A
1
2
Sequence for test :
Sequence for test :
1) Close short circuit slide
SLS2 of terminals 1 and 2.
2) Open disconnect slide link
of terminal 1.
1) Close short circuit slide SLS2 of terminals 1 and 2.
2) Open disconnect slide link of terminal 2.
3) Connect external power supply to test sockets of
terminals 1 and 2.
A
A
A
1
2
1
2
3
4
5
6
3) Connect external power
supply to test sockets of
terminals 1 and 2.
S1
S2
S1
S2
S1
S2
S1
S2
Closing of SLS2
L1
L1
L2
L3
Meter replacement
Meter Replacement for L1
A
1
2
Sequence for test :
Sequence for test :
1) Close short circuit slide SLS2 of terminals 1 and 2.
2) Open disconnect slide link of terminal 2.
3) Disconnect meter for L1 at terminals 1 and 2.
1) Close short circuit slide
SLS2 of terminals 1 and 2.
2) Open disconnect slide link
of terminal 1.
A
A
A
1
2
1
2
3
4
5
6
3) Disconnect meter for L1.
S1
S2
S1
S2
S1
S2
S1
S2
Closing of SLS2
L1
L1
L2
L3
Altech Corp.® • 35 Royal Road • Flemington, NJ 08822-6000 • Phone (908)806-9400 • FAX (908)806-9490
27
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