KYN28A-12 metal clad switchgear electrical cubicle is applicable for 3.6kV ~ 12kV with three-phase AC 50Hz single bus or single bus sectional system. It is mainly used for substation and distribution system of power plants, substation, industrial and mining enterprises, building hotels, municipal construction and petrochemical sector as power receiving, power distribution and the circuitcontrolling, protection and monitoring.
1. Ambient temperature:-10oC ~ +40oC;
2. Altitude: Not exceed 1000m above sea level;
3. Ambient humidity: Daily average RH ≤ 95%; Monthly average RH ≤ 90%
4. Water vapor pressure:Daily average RH ≤ 2.2kPa; Monthly average RH ≤ 1.8kPa;
5.No violent vibration, bumps and vertical gradient not more than 8° of place
There may be condensation, when the temperature plunged with filth, the products apply to the following two conditions more severe than normal
(1). Condensation not frequently(average monthly not more than two times) with mild pollution;
(2). There is no condensation (average yearly not more than two times) with serious pollution;
Note:
1. Allow to -30℃ to storage and transportation.
2.When the area of altitude exceed 1000m , according to the JB/Z102 «high voltage electrical appliances using the technical requirements of the altitude» , when the altitude is not more than 2000m, low pressure auxiliary equipment does not need to take any measures.
3.When the actual use conditions is different with the above mentioned information, the user and the manufacturer should be negotiated
Technical data
| No |
Name |
Unit |
Parameter |
| 1 |
Insuation
level |
Rated voltage |
kV |
3.6 |
7.2 |
11 |
| 1minpower frequency withstand volatge |
kV |
24 |
32 |
42 |
| 2 |
Lightning impulse withstand voltage (full wave) |
kV |
40 |
60 |
75 |
| 3 |
Rated frequency |
Hz |
50/60 |
| 4 |
Rated current |
A |
630.1250.1600.2000.2500.3150 |
| 5 |
4s short time withstand current |
kA |
20、25、31、31.5、40、50 |
| 6 |
Rated peak withstand current |
kA |
50、63、80、100、125 |
| 7 |
Protection level |
|
Enclosure IP4X, partition of each compartment is IP2X |
Vaccum Circuit Breaker
| No |
Name |
Unit |
VS1、ZN12V |
VD4 |
| 1 |
Insuation level
|
Rated voltage |
kV |
11 |
| 1min power frequency withstand volatge |
kV |
42 |
| 2 |
Lightning impulse withstand voltage (full wave) |
kV |
75 |
| 3 |
Rated frequency |
Hz |
50/60 |
| 4 |
Rated current |
A |
630.1250.1600.2000,2500.3150 |
| 5 |
Rated short circuit break current |
kA |
20、25、31、31.5、40、50 |
| 6 |
4s short time withstand current |
kA |
20、25、31、31.5、40、50 |
| 7 |
Rated peak withstand current |
kA |
40，50、63，80，100，125 |
| 8 |
Rated operate sequence |
|
0-0.3S-c0180S-CO |
| 9 |
Rated short circuit break current>40kA, operation sequence |
|
0-180sco-180s-co |
| 10 |
Closing sequence |
|
≤70 |
≈60 |
| 11 |
Open sequence |
|
≤50 |
≤45 |
| 12 |
Arcing time |
|
≤15 |
≤15 |
| 13 |
Break time |
|
≤65 |
≤60 |
The enclosure is made of aluminium-zinc plated steel sheet by CNC machine, high precise dimension, short production cycle,excellent mechanical strength and nice appearance. The busbar compartment, VCB handc art compartment, cable compartment and relay compartment are separated by metal sheet. Flexible operation for handcart movement, clear position instruction, the earthing switch allow to making short circuit current and creditable mechanical interlock.
