MCSeT Cubicle Ratings
Table 7 MCSeT Cubicle Ratings
|
Rated voltage |
Ur |
(kV) |
up to 12 |
17.5 |
24 |
|
|---|---|---|---|---|---|---|
|
Rated insulation level |
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|
Power frequency withstand voltage 50 Hz - 1 min |
Ud |
(rms kV) |
28 |
38 |
50 |
|
|
Rated frequency |
Fr |
(Hz) |
50/60 |
50/60 |
50/60 |
|
|
Lightning impulse withstand voltage 1.2/50 μs |
Up |
(kV peak) |
75 |
95 |
125 |
|
|
Rated normal current and maximum short time withstand current (1) |
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|
Functional unit with VCB |
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|
Short time withstand current |
Ik max. |
Ik/tk (kA/3 s)
|
up to 40 |
up to 40 |
up to 31.5 |
|
|
Rated current |
Ir max. busbar |
Ir |
(A) |
up to 4000(2) |
up to 4000(2) |
up to 3150(2) |
|
Rated current |
Ir VCB |
Ir |
(A) |
630 |
630 |
630 |
|
1250 |
1250 |
1250 |
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|
2000 |
2000 |
2000 |
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|
2500 |
2500 |
2500 |
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|
3150 |
3150 |
3150(2) |
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|
4000(2) |
4000(2) |
– |
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|
Degree of protection |
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|
IP4X IP2X |
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|
(1) For functional units equipped with circuit breakers, the breaking capacity is equal to the short time withstand current. In all cases, the device peak making capacity is equal to 2.5 times the short time withstand current for 50 Hz, and 2.6 times the short time withstand current for the 60 Hz. (2) With forced cooling. |
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