24
1.5
Primary Current Injection Lead Sets
1.5.1
Description
The optional 3000AL, 4000AL, 5000AL, 6000AL lead sets supplied for use with the CU-Ps are
made up from several 70mm
2
cores and have different continuous and intermittent ratings.
The rating is also affected by the arrangement of the individual 70mm
2
cables making up the
high current cable. The leads are supplied with the cables strapped together, but to achieve
their maximum rating the straps must be cut, and the cores laid out side by side whilst testing.
Lead set type
Continuous rating
5 minutes on/15
minutes off
rating
1 sec on/1
minute off rating
Cores strapped
together
Cores laid out
flat
Cores strapped
together
Cores strapped
together
3000AL
1200A
3000A
1500A
6000A
4000AL
1400A
4000A
2000A
8000A
5000AL
1600A
5000A
2500A
10000A
6000AL
1800A
6000A
3000A
12000A
8000AL
1800A
6000A
3000A
12000A
CAUTION
The cables and terminals will become hot in use. Ensure adequate cooling time is allowed
before touching cables or connectors after tests.
Note:
The output leads should not be rested against any sharp edges whilst testing. The insulation
on the cables softens as it heats up, and it is possible for sharp edges to damage the
insulation on the cable under these circumstances. Eddy current heating may occur in ferrous
metals that the pair of cable rests against, and this could heat the cable insulation further.