Suitable for Use as A Protection And Control Appliance in a Three-Phase Power System with a Rated Voltage of 12 Kv and a Frequency of 50hz.
Especially Suitable for Places That Need Frequent Operation Under The Rated Working Current or Multiple Short-Circuit Current Interruptions.
HLVP-12 open type vacuum circuit breaker is an indoor high-voltage switchgear, which is suitable for use as a protection and control appliance in a three-phase power system with a rated voltage of 12 KV and a frequency of 50Hz. Due to the special advantages of the vacuum circuit breaker, it is especially suitable for places that need frequent operation under the rated working current or multiple short-circuit current interruptions.
This type of product is a modular operating mechanism. The main insulation is solid insulation, and the vacuum arc extinguishing chamber is integrally cast in the epoxy resin insulation room. The adoption of this structure greatly improves the insulation performance of the product, and can meet the requirements of environmental conditions such as humidity and high altitude.
|
NO |
Item |
Unit |
Technical Parameters |
||
|
1 |
Rated voltage |
KV |
12 |
||
|
2 |
Rated short-duration power frequency withstand voltage |
KV |
42/48(Interphase, ground/fracture) |
||
|
3 |
Rated lightning impulse withstand voltage |
KV |
42/48(Interphase, ground/fracture) |
||
|
4 |
Rated frequency |
Hz |
50 |
||
|
5 |
Rated current |
A |
630 1250 |
630 1250 1600 |
630 1250 1600 |
|
6 |
Rated short-circuit breaking current |
KA |
20/25 |
31.5 |
40 |
|
7 |
Rated short-time withstand current |
KA |
20/25 |
31.5 |
40 |
|
8 |
Rated short circuit duration |
S |
4 |
||
|
9 |
Rated peak withstand current |
KA |
50/63 |
80 |
100 |
|
10 |
Rated short circuit closing current |
KA |
50/63 |
80 |
100 |
|
11 |
Secondary circuit power frequency withstand voltage (1min) |
V |
2000 |
||
|
12 |
Rated single / back to back capacitor group breaking current |
A |
630/400(40kA:800/400) |
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|
13 |
Rated capacitor bank closing current |
KA |
12.5 (frequency is not greater than) |
||
|
14 |
Mechanical life |
TIMES |
20000 |
||
|
15 |
Rated current breaking times (electrical life) |
TIMES |
20000 |
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|
16 |
Rated short circuit current breaking times |
TIMES |
50(40KA≤30) |
||
|
17 |
Dynamic and static contacts allow wear cumulative thickness |
MM |
3 |
||
|
18 |
Energy storage time |
S |
≤10 |
||
|
19 |
Contact opening distance |
MM |
11±1 |
||
|
20 |
Overtravel |
|
3.5±0.5 |
||
|
21 |
Contact closing bounce time |
MS |
≤2(40KA≤3) |
||
|
22 |
Three-phase split/closed period |
MS |
≤2 |
||
|
23 |
Average opening speed (contacts are separated by -8mm) |
M/S |
1.2±0.2 |
||
|
24 |
Main conductive loop resistance |
μΩ |
≤50(630A)≤45(1250A) ≤40 (1600,2000A)≤35 (2500A or more) |
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|
25 |
Rated operation sequence |
|
0-0.3s-Co-180s-Co |
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