Summary
KYN61-40.5 removable AC metal-clad switchgear (short for switchgear as below) applies to 40.5kV, 3 phase, AC and 50/60Hz electrical power network for receiving and distributing power energy and also for control, monitor and protect ion. It is applicable in general power system and occasions with frequent operation. The product conforms to GB3906: 3~35kV AC Metal Enclosed Switchgear, IEC60694 & GB/T11022: The common technical clauses of HV Switchgear and controlgear Standard, DL/T404-1997: Order Technical term of Indoor AC HV Switchgear and IEC62271-200 1~52kV AC Metal Enclosed Switchgear and controlgear standard.
Ambient condition
- Ambient temperature:-10℃~40℃ , daily average: ≤ 35℃;
- Altitude: ≦1000m；
- Relative humidity: daily average ≤ 95%, monthly average ≤ 90%;
- Earthquake intensity: ≤ 8 degree;
- Applicable occasions should be free from corrosives, inflammables and vapour.
Model
Product feature
The switchgear is an assembly unit and the circuit breaker adopts handcart floor model. It owns simply change and well exchange after equipping with advanced composite insulation vacuum circuit breaker. Lead screw nut propulsion mechanism is installed in the handcart frame for preventing from fault operating and damaging propulsion mechanism, the handcart can be remove easily; All of the operation steps can be carried out at closing condition; It is compulsory locking among main switch, handcart and panel door to meet five protection; wide space for connecting several cable in cable cubicle. Earthing switch is used in earthing and loop short circuit, protection degree of enclosure is IP4X, IP2X under opening condition.
Technical specification
| No. | Item | Unit | Data | |
| 1 | Rated voltage | kV | 40.5 | |
| 2 | Rated current | A | 630, 1250, 1600, 2000, 2500 | |
| 3 | Rated frequency | Hz | 50/60 | |
| 4 | Rated short circuit breaking current | kA | 25, 31.5 | |
| 5 | 4s rated short time withstand current | kA | 25, 31.5 | |
| 6 | Rated short circuit making current (peak) | kA | 63, 80 | |
| 7 | Rated peak withstand current(peak) | kA | 63, 80 | |
| 8 | Insulation level | Rated lightning impulse withstand voltage | kV | 185(across open contacts: 215) |
| Main circuit 1min P.F withstand voltage | kV | 95(across open contacts: 110) | ||
| Auxiliary circuit 1min P.F. withstand voltage | kV | 2 | ||
| 9 | Outline dimension(W | mm | 1400(1200) | |
| 10 | Protection degree | IP4X(compartment IP2X) | ||
ZN85-40.5 VCB Primary Technical Parameters
| No . | Item | Unit | Data |
| 1 | Rated voltage | kV | 40.5 |
| 2 | 1min power frequency withstand voltage(virtual value) | kV | 95 |
| 3 | Lightning impulse withstand voltage (peak) | kV | 185 |
| 4 | Rated frequency | Hz | 50/60 |
| 5 | Rated current | A | 630, 1250, 1600, 2000, 2500 |
| 6 | Rated short time withstand current | kA | 25, 31.5 |
| 7 | Rated peak withstand current | kA | 63, 80 |
| 8 | Rated short circuit continuous time | s | 4 |
| 9 | Rated short circuit breaking current | kA | 25, 31.5 |
| 10 | Rated short circuit making current | kA | 63,80 |
| 11 | Rated operation sequence | O-0.3s-CO-180s-CO | |
| 12 | Breaking time | ms | ≤80 |
| 13 | Rated short circuit breaking current breaking times | Times | 20 |
| 14 | Single capacitor breaking current | A | 630 |
| 15 | Back to back capacitor bank breaking current | A | 400 |
| 16 | Rated operating voltage | V | AC/DC 110/220 |
| 17 | Mechanical life | Times | 10000 |
Structure feature
The switchgear divides into enclosure and handcart, the enclosure is made of aluminium-zinc plated steel sheet after processed by CNC machine and multi-bending, then is assembled with bolts. So it has strong mechanical strength and can guarantee the neatness and good appearance. It consist of relay compartment, handcart compartment, cable degree is IP2 X when CB handcart is on opening and testing position.
The switchgear is metal-clad removable, main circuit adopts composite insulation processing, emergency spreading to other parts. CT and earthing switch are mounted in cable compartment and busbar compartment. The protection degree of enclosure is IP3X, the protection and large space for several cables. The structural design of new completely insulated VCB or SF6 CB and spring operating mechanism is integrated console model with such excellence of well exchange and simply change.
KYN61-40.5 Structure Drawing