KYN28-12(Z) High voltage switch cabinet
KYN 28 general introductions
1. General introduction
KYN28A-12(Z)(GZS1) type armored withdrawable AC metal-enclosed switch device is a indoor complete set 3 phase AC power distribution device with rated voltage 3.6~12KV. The switch cabinet is made consists of two parts: fixed cabinet and withdrawable part(handcart). The enclosure and partition plates of all functions are bolted aluminum and zinc coated steel plates. The protection grade of cabinet enclosure is IP4X, the compartment is IP2X.
1.2 Range of application
Applicable for power distributions of power plants, power systems, power grid and industrial and mining companies’ substations. Also applicable for frequently started high voltage motors.
1.2 Technical features
The switch cabinet meets the requirements of GB3906、DL404、IEC-298 standards. It has “five-preventing” functions: faulty operation preventing circuit breaker, on-load withdraw preventing handcart, live close preventing grounding switch, power distribution preventing when the grounding switch is in earthing position, faulty entering live compartment preventing.
2. Technical parameters
2.1 Main technical parameters
|
Item |
Unit |
Value |
|
Rated voltage |
KV |
3.6 7.2 12 |
|
Rated current |
A |
630 1250 1600 2000 2500 3150 4000 |
|
Rated frequency |
HZ |
50 |
|
Rated short-time withstand current |
KA |
16 20 25 31.5 40 50 |
|
Rated peak withstand current |
KA |
40 50 63 80 100 125 |
|
Rated power frequency withstand voltage |
KV |
42 (1 min) |
|
Rated lightning impulse withstand voltage |
KV |
75 |
|
Rated duration of short-circuit |
S |
4 |
|
Protection grade |
|
IP4X |
2.2 working conditions
Installation: indoor
Ambient temperature: maximum +40℃ minimum -15℃
Relative humidity: daily average value no more than 95%, monthly average value no more than 90%
Altitude: no more than 1000M
Saturated vapor pressure: daily average value no more than 2.2×10-3MPa, monthly average value no more than 1.8×10-3 MPa；
Seismic intensity: no more than grade 8
No fire, explosion danger; no heavy pollution, chemical corrosion and vibration.
2.3 Type explanation
Breaking current(KA)
Rated current(A)
Primary plan code
Rated voltage(KV)
Indoor type
Withdrawable(mid entry)
Armored metal enclosed switch device
3. Ordering instructions
User shall provide following documents before ordering:
Main wiring schemes and single line systematic diagram,
Switch cabinets layout diagram,
Secondary wiring schematic diagram, terminal diagram,
Main components type, specifications and quantity,
Bus bar type, material, cabinet color,
If bus bar bridge is required, please provide brand and corresponding documents,
Spare parts list and quantity,
For special service condition please notify before ordering.
4. Corresponding certifications
CE certification, HV type test report
