802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11
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Operation
Test voltages
Test adapters
Suitable test adapters must be available for performing the cable test. The following table
offers an overview of the test adapters of the individual cable T-plug manufacturers:
Performing the cable test
➭ Earth the feeder (see page 194, "Earthing/ready-to-earth with the three-position switch").
➭ Secure against reclosing.
➭ Verify safe isolation from supply (see page 203, "Verification of safe isolation from supply").
➭ Disconnect the feeder in the opposite substation and secure against reclosing.
➭ Verify safe isolation from supply in the opposite substation.
➭ Undo the fixing bolts of the cable compartment cover.
➭ Remove the cable compartment cover.
➭ Remove the screw insert of the connected cable T-plug according to the manufacturer's
instructions.
➭ Insert/screw the test adapter into the cable T-plug.
➭ Connect test lead.
➭ Short-circuit the voltage indicators at the earthing points of the test sockets using short-
circuit plugs.
➭ De-earth the feeder (see page 194, "De-earthing with the three-position switch").
➭ Perform voltage test. Perform the test according to the recommendations of the cable
manufacturers or the customers' specifications.
➭ Proceed in reverse order to return to the initial situation.
Rated voltage of the
switchgear [kV]
DC test voltage
AC test voltage VLF
1
0.1 Hz
AC
DC
Rectangle [kV]
Sinus [kV]
Test
duration
[min]
U
ct
[kV] Test
duration
[min]
U
ct
[kV] Test
duration
[min]
Mean value
Maximum
value
Mean value
Maximum
value
7.2
11
1
22
15
22
22
15.6
22
60
12
19
1
38
15
38
38
26.8
38
60
15
28
1
52
15
52
52
36.8
52
60
17.5
28
1
52
15
52
52
36.8
52
60
24
38
1
72
15
72
72
51
72
60
1
Very low frequency
Make
Test adapter
For cable T-plugs
3M
PR 23.2
93-EE 705-6
93-EE 715-6
Nexans Euromold
400TR
400TB/G; 430TB-630A; 300PB-630A; 440TB/G
K400TB/G; K430TB-630A; K300PB-630A; K440TB/G
800TR
484TB/G; 804PB/G
489TB/G; 809PB/G
K484TB/G; K804PB/G
K489TB/G; K809PB/G
nkt cables
PAK 630 M12
CB 12-630; CC 12-630
CB 17.5-630; CC 17.5-630
CB 24-630; CC 24-630
CB 24-1250-2; CC 24-1250-2
PAK 630 M16
CB 36-630(1250); CC 36-630(1250)
CB 42-1250-3, CC 42-2500-3
Südkabel
PR 23.1
SET 12; SEHDT 13; SEHDK 13.1
SET 24; SEHDT 23; SEHDK 23.1
Tyco Electronics Raychem
RSTI-68TR
RSTI-68TRL
RSTI-58xx; RSTI-CC-58xx
RSTI-395x; RSTI-CC-395x; RSTI-595x; RSTI-CC-595x
GCA
CJB10-TB
CJBxx-630; CJBKxx-630
ABB Kabeldon
PG-A 630
CSE-A xx630-xx
Cellpack
CPS
CTS 630A 24kV; CTKS 630A 24kV