China Electrical Power Transformer manufacturer

Indoor Removable Type High Voltage Switchgear With Medium Pressure Chamber

Product Details:
Place of Origin: China
Model Number: KYN28
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-20000/piece
Packaging Details: wooden case
Delivery Time: 30 days
Payment Terms: LC T/T
Supply Ability: 5000 piece/year
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Detail Information

Model No: KYN28 Rated Current: 630,1250,1600,2000,2500,3150
Rated Peak Withstand Current: 50,63,80,100KA Insulation: 95/185KV Power Frequency/Lightning
Optional Circuit Breakers: ZN85, VD4, HD4, LN2-40.5 Etc. Operational Power Supply: DC:110,220; AC:110,220
Rated Voltage: 40.5
High Light:

switchgear control panel


metal clad switchgear

Product Description

Medium Pressure Chamber for Factory Building KYN28 Armoured Removable

Switchgear Metal-Clad Indoor AC Metal-Enclosed Switchgear:



1. General
KYN28A-12 Steel-clad Removable-type Metal-enclosed Switchgear (hereinafter called switchgear for short) is applicable in the power system of three phases 50/60HZ. which is used to receive and distribute power as well as control. protect and moniter the circuit of power plant, substation and industrial and mining enterprises and high-rise buildings.
KYN28A-12 switchgear has the function of preventing various wrong operations including preventing loading mobile handcart, preventing grounding switch to circuit the breaker in closed position, preventing to close the charged grounding switch and preventing straying into charged compartment and other functions. Switchgear is equipped with excellent mid-set type of VS1, VD4 series high voltage vacuum circuit breaker and enclosed type vacuum circuit breaker. The secondary loop configuration of the switchgear is advanced and reliable control protection devices: Busbar with heat insulation materials or the insulation of the epoxy coating methods, optimizes the electrode shape and compacts the structure. The switchgear is safe and reliable power distribution equipment with advanced technology. stable performance, reasonable structure and easy usage.

2. Working Conditions
Ambient temperature : -15ºC- + 40ºC and the daily average temperature is below 35ºC
Humidity: daily average ≤95%
monthly average ≤90%
daily vapor pressure ≤2.2kpa
monthly vapor pressure ≤1. 8kpa
Altitude: ≤1000m
It is applicable in the place without obvious dust, smoke, corrosive or flammable gas, vapor, salt mist and so forth pollution.
The external vibration or ground shaking outside the switchgear and control equipment is negligible.
In the secondary system of induction electromagnetic interference amplitude is less than 1.6kv.
3. Special service conditions
Customer and manufacturer need to discuss when the environment conditions are not according to GB/T11022.
4. Structure and Operating Principle
KYN28A-12 switchgear is composed of two parts: cabinet and removable components (commonly known as handcart). Cabinet is separated into several functional compartments by steel plates, such as busbar compartment, Circuit breaker compartment, cable compartment and relay instruments compartment, etc.
The removable components of the switchgear are configured vacuum circuit breaker handcart, voltage transformer handcart, lightning arrester handcart, isolation handcart and fuse handcart, etc.



Item Unit Parameter
Rated voltage KV 3.6,7.2/12
Rated frequency Hz 50
Rated current of breaker A 630,1250,1600,2000,2500,3150
Rated breaking active load current A 630,1250,1600,2000,2500,3150
Rated closed loop breaking current KA 20,25,31.5,40
Rated current under the cable charging breaking current KA 50,63,80,100
Rated short-circuit closing current(peak) KA 20,25,31.5,40
Rated short-circuit breaking current KA 50,63,80,100
Rated insulation level 1 min frequency
withstand voltage
Pole,the pole pair KV 24,32,42
break between KV 24,32,48
Lighting impulse
withstand voltage(peak)
Pole,the pole pair KV 40,60,75
break between KV 46,70,85
Degree of protection KV Enclosure IP4X,compartment,circuit breaker
door open when IP2X



Indoor Removable Type High Voltage Switchgear With Medium Pressure Chamber 0






♦ Anti harsh environment, anti condensation, frost, fog, salt contamination, corrosion resistance etc;


♦ Compact structure, small size, easy to install;


♦ Modular design, flexible expansion;


♦ Smart grid compatible, optional automation terminal, to meet the requirements of smart grid upgrade.





Indoor Removable Type High Voltage Switchgear With Medium Pressure Chamber 1





Service environment

1. Ambient air temperature: -5ºC+40ºCand the average temperature should not exceed +35ºC in 24h.

2. Air condition: With clean air. Relative humidity should not exceed 50% at +40ºC. Higher relative

humidity is allowed at lower temperature. Ex. 90% at +20ºC. But in view of the temperature change,

it is possible that moderate dews will produce casually.

3. Altitude above sea level should not exceed 2000M.

4. The device is suitable to the transportation and store with following temperature:-25ºC ~+55ºC,

in short time (within 24h) it reaches +70ºC. Under the limiting temperature, device should not suffer

damage that can[1]t recover, and it can works normally under normal conditions.

5. If the above operating conditions not meet user's demand. Consult with manufactory.

6. Technical agreement should be signed additionally if the device is used for marine petrol drill

taken platform and nuclear power station.





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