Zhejiang Zhi Duoxin Electric Co., Ltd.
KYN61-40.5(Z) Armored removable AC metal enclosed switchgear
Overview
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 thre-phase AC50Hz and rated voltage of 40.5kV. Used for receiving and distributing the electric energy in power plants, transfbnner 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 doorofhandcart chamber is opened;
9.The product complies with GB3906-1991, DL404-1997 and refers to the international standard IEC-298.
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
| Name | unit | Date |
| Rated voltage | KV | 40.5 |
| Rated current | A | 1250 1600 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 | 1P3X |
Vacuum circuit breaker main technical parameters
| Name | Unit | Date |
| ERated voltage | KV | 40.5 |
| Rated frequency | Hz | 50 |
| Rated power frequency withstand voltage | KV | 95/1 min |
| LERated lightning impulse withstand voltage | KV | 185 |
| Rated current | A | 1250 1600 2000 |
| Rated short-time withstand current | KA | 202531.5 |
| Ratcd short-time brcaking current | KA | 202531.5 |
| Rated peak withstand current | KA | 5063 80 |
| Rated short-circuit duration | ms | 4 |
| Opening time | ms | 30≤t≤60 |
| Closing time | s | 50≤t≤100 |
| Rated short-circuit breaking current times | times | 20 |
| Mechanical life | times | 10000 |
Spring operating mechanism main technical parameters
| Name | Unit | Date | |
| Rated operating voltage | Opening coil | V | DC220/110,AC220110 |
| Closing coil | |||
| Rated operating current | Opening coil | A | 0.96(220V),1.05(110V) |
| Closing coil | |||
| Power of encrgy-storage motor | W | 230 | |
| HRated voltage of energy-storage motor | V | DC220/110,AC220/11O | |
| Energy-storage timc | S | ≤12 | |
Switchgear structure features
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