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High Voltage Switchgear

Overview

KYN61-40.5(Z) type alternating-current metal-clad and metal-enclosed withdrawable switchgear

 (hereinafter referred to as switch gear)---high voltage switchgear is a indoor complete set of power distribution unit of 

three-phase AC50Hz and rated voltage of 40.5kV. Used for receiving and distributing the electric energy in power plants, 

transformer substations,mining and industrial enterprises, etc.,

 it controls, protects and detects the circuits, also is applicable to frequent operation locations. 

This switchgear complies with GB/ T11022-1999, GB3906-1991, DL404-1997,etc.

 

 

High voltage switchgear series

Main feature

1. Cabinet structure is of assembly type, the circuit breaker adopts floor type handcart structure;

2. Equipped with brand new composite insulated vacuum circuit breaker,

 is featured with good interchangeability, and is simple to change;

3. The handcart frame is mounted with lead screw nut propelling mechanism, it is able to move the handcart easily, 

and prevent damage of propelling mechanism caused by misoperation;

4. All operations can be carried out when the cabinet door is closed;

5. Interlocking among the main switch, handcart and switchgear adopts compulsory mechanical locking mode,

 meeting the "five preventions” function;

6. Cable chamber is large enough, it could connect multi cables;

7. The fast earthing switch is used for earthing and circuit short-circuit;

8. Degree of protection of the enclosure is IP3X, and is IP2X when the door of handcart chamber is opened;

9. The product complies with GB3906-1991, DL404-1997 and refers to the international standard I EC-298.


Use environmental conditions

1. Ambient temperature: -10°C 〜+40°C, mean value measured within 24h should not exceed 35°C .

2. Altitude: not exceed 1000m;

3. Relative humidity: daily mean not over 95%, monthly mean not over 90%;

4. Seismic intensity: not beyond Ms8;

5. Vapor pressure: daily mean not over 2.2kPa, monthly mean not over 1.8kPa.

6. Ambient environment: the installation site should be free of fire, explosive danger, serious pollution, 

chemical corrosion or severe vibration.


Main technical parameters

 

Name

Unit

value

Rated voltage

kV

40.5

Rated current

A

12501600 2000

Rated frequency

Hz

50

Rated short-time 

withstand current

kA

20 25 31.5

Rated peak withstand current

kA

50 63 80

Rated power frequency

 withstand voltage

kV

95/lmin

Rated lightning impulse

 withstand voltage

kV

185

Rated short-circuit duration

s

4

Degree of protection


IP3X

 

Main technical parameters

 

Name

Unit

value

Rated voltage

kV

40.5

Rated frequency

Hz

50

Rated power frequency 

withstand voltage

kV

95/lmin

Rated lightning impulse

 withstand voltage

kV

185

Rated current

A

12501600 2000

Rated short-time 

withstand current

kA

20 25 31.5

Rated short-time breaking current

kA

20 25 31.5

Rated peak 

withstand current

kA

50 63 80

Rated short-circuit duration

ms

4

Opening time

ms

30 W t W 60

Closing time

s

50 W t W 100

Rated short-circuit breaking

 current times

times

20

Mechanical life

times

10000

 

Main technical parameters

 

Name

Unit

value


Rated operating voltage

Opening coil

Closing coil

V

DC220/110, AC220/110

Rated operating current

Opening coil

Closing coil

A

0.96(220V), 1.05(110V)

Power of energy-storage motor

W230

Rated voltage of

 energy-storage motor

VDC220/110, AC220/110

Energy-storage time

SW 12

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