Bus Coupler panel
Bus Coupler Panels are used in Double Busbar Switchboards to link the two sets of three-phase busbars using a Circuit Breaker. This enhances the operational flexibility of the switchboard.
The rest of the elements of the panel remain as described in the Double Busbar Panel.
In this panel too, Current and Voltage Transformers are fitted as required for the protection scheme.
| LMVP Vacuum Breaker panel ratings | |||||
Rated normal current (amps) |
630 |
800 |
1250 |
2000 |
2500 |
Rated voltage (kV) |
3.6 |
3.6 |
3.6 |
3.6 |
3.6 |
7.2 |
7.2 |
7.2 |
7.2 |
7.2 |
|
12 |
12 |
12 |
12 |
12 |
|
Rated max.short-circuit breaking current (kA) |
25 |
25 |
31.5 |
31.5 |
31.5 |
Panel width (mm) |
584 |
584 |
584 |
914 |
914 |
Standards: |
IEC 60298, IEC 60694, AS2086, AS2650 |
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| Type LMVP Switchgear Specifications | |||||
Standards |
IEC 60298, IEC 60694, AS2086, AS2650 | ||||
Rated voltage |
Up to 12kV (r.m.s.) | ||||
Rated insulation level |
Lightning impulse withstand |
75 or 95kVp | |||
1 minute power- frequency withstand |
28kV (r.m.s.) | ||||
Additional tests |
42kV (r.m.s.) |
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Rated frequency |
50Hz | ||||
Rated short-time withstand current |
Up to 31.5kA | ||||
Rated peak withstand current |
up to 79kAp | ||||
Rated duration of short- circuit |
3 seconds, Additional test 4 seconds | ||||
internal fault (type tested) |
25kA | ||||
Construction |
Metalclad | ||||
|
Degree of protection |
Standard |
IP3X (approaching IP4X) | |||
Optional |
IP4X or higher to suit specific requirements | ||||
Normal service conditions |
Indoor | ||||
|
Ambient air temperatures |
Maximum |
40ºC (without derating) |
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Average over 24 hours |
Not exceeding 35ºC |
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Minimum |
-5ºC |
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Altitude |
Not exceeding 1,000m |
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Average relative humidity over 24 hours |
Not exceeding 95% |
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Finish |
Epoxy powder paint coating after derusting, degreasing and phosphating |
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|
Colours |
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Pipeline grey (AS2700 colour N43) |
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Other colours optional |
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