KYN28A-12 central metal-clad and metal-enclosed switchgear
1. General
KYN28A-12 central metal-clad and metal-enclosed switchgear is produced independently based on the advanced manufacturing technique from home and abroad. It can be used to replace all sorts of old metal-enclosed switchgears.
The shell adopts the aluminum-zinc alloy coated steel sheet, processed by CNC machining tool, which ensure the high mechanical strength. The door is anti-corrosion and anti-impact coaedt. And the protection degree is IP4X
The main switch can be with the ZN63A (VSI) type of circuit breaker of this company, C3 series of fixed load switch; it is also with the interface communication.
The insulation distance is over 125mm, composite insulation is over 60mm. all the circuit breakers have the features of long working life, high parameters, less maintenance, small size and so on
3. Main technical parameters
|
item |
Unit |
Parameters |
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|
rated voltage |
KV |
12 |
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|
rated current |
HZ |
50 |
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|
rated current of circuit breaker |
A |
630\2000 |
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|
rated current of switch cabinet |
A |
630\2000 |
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|
rated current of dynamic stability (4S) |
KA |
16\20\25\31.5\40\50 |
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|
rated current of dynamic stability (peak) |
KA |
40\50\63\80\100\125 |
|||
|
rated short circuit drop-out current |
KA |
16\20\25\31.5\40\50 |
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|
rated short circuit making current (peak) |
KA |
40\50\63\80\100\125 |
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|
Rated insulation level |
1min power frequency withstand voltage |
KA |
24 |
32 |
42 |
|
lighting impulse withstand voltage |
KA |
40 |
60 |
75 |
|
|
protection degree |
IP2X shell: IP4X, it is IP2X when compartment and circuit breaker room is open |
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