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.

_{♦ 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.}

<sub>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</sub>

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

<sub>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,</sub>

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

<sub>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</sub>

_{taken platform and nuclear power station.}