Product Summary
KYN61-40.5(Z) type alternating-current metal-clad and metal-enclosed withdrawable switchgear (hereinafter referred to as 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
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 IEC-298.nd reliably through the harsh condensation,filth and internal arc tolerance test.
Use environmental conditions
1.Ambient temperature: -10℃ ~+40℃ , mean value measured within 24h should not exceed 35℃ .
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.
Vacuum switchgear main technical parameters
| Sr. | Content | Unit | Value | |
| 1 | Rated Voltage | kV | 40.5 | |
| 2 | Rated Current | A | 630/1250/1600/2000/2500 | |
| 3 | Rated Frequency | Hz | 50/60 | |
| 4 | Power Frequency Withstand Voltage in 1 min | Phase,Earthed | kV | 95 |
| solating Fracture | kV | 110 | ||
| 5 | Lightning Impulse Withstand Voltage(Peak) | Phase,Earthed | kV | 185 |
| solating Fracture | kV | 215 | ||
| 6 | Rated Current of the Main Busbar | A | 630/1250/1600/2000/2500 | |
| 7 | Rated Current of the Branch Busbar | A | 630/1250/1600/2000/2500 | |
| 8 | Rated Short-circuit Breaking Current | kA | 20/25/31.5 | |
| 9 | Rated Short-time Withstand Current(4s) | kA | 20/25/31.5 | |
| 10 | Rated Peak Withstand Current | kA | 50/63/80 | |
| 11 | Rated Short Circuit Making Current | kA | 50/63/80 | |
| 12 | Frequency Withstand Voltage in 1 min of Aux Control Loop | V | 200 | |
| 13 | Internal Arc Duration Test(0.5s) | kA | 31.5 | |
| 14 | Degrees of Protection | IP | IP4X(IP2X when the front door is opened) | |
| 15 | Rated Voltage of Aux Control Loop | V | AC or DC 110/220 | |
Switchgear structure features
Switch cabinet installation
Primary wiring schemes of switchgear include 27 typical schemes, meeting users'demands on cable incoming and outgoing lines, overhead incoming and outgoing lines tie, measurement and protection, if require other schemes, please contact the manufacturer.
