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Basic Info.
| Model NO. | VAC85-36 (40.5)kV |
| Poles Number | 3 |
| Type | Circuit Breaker |
| Function | Conventional Circuit Breaker |
| Certification | ISO9001-2000, CE |
| Rated Capacitor Bank Breaking Current | 630A |
| Mechanical Life | 10,000times |
| Clearance Between Open Contacts | 17-19mm |
| Over Travel | 3-5mm |
| Contact Limit Erosion of Over Travel | 3mm |
| Trademark | VACEM |
| Origin | Wenzhou, China |
1.General description
VAC85-36(40.5)kV/T2000A-31.5kA type indoor M.V. VCB is suitable for the power system tri-phase AC 50Hz,rated voltage 36(40.5)kV, for industrial and mining enterprises power plants and substations, as the division of load current, overload current, fault current purposes.
The circuit breaker arranged with upper and lower structure, effectively reduce the depth of circuit breaker. The spring operating mechanism designed for this new type circuit breaker installing in the breaker frame, Its structure feature is more suitable for upper and lower type of circuit breaker, and becomes a key part of breaker overall structure simple design, output curve, and performance are more suitable for the characteristics and requirement of 36(40.5)kV VCB.
2.Main technical parameter
| Item | Unit | Data |
| Rated voltage | kV | 36(40.5) |
| Rated insulation level 1 min power frequency withstand voltage (effective) | kV | 95 |
| Rated insulation level lightning impulse withstand voltage (peak) | kV | 185 |
| Rated frequency | Hz | 50 |
| Rated current | A | 1250, 1600, 2000 |
| 4s rated short time withstand current | kA | 25, 31.5 |
| Rated peak withstand current | kA | 63, 80 |
| Rated short circuit breaking current | kA | 25, 31.5 |
| Rated short circuit making current | kA | 63, 80 |
| Rated operation sequence | O-0.3s-CO-180s-CO | |
| Breaking times of rated short circuit breaking current | times | 20 |
| Rated capacitor bank breaking current | A | 630 |
| Mechanical life | times | 10000 |
3.After the overall adjustment of the circuit breaker,it shall meet the parameter requirements listed in Table II:
| Item | Unit | Data |
| Clearance between open contacts | mm | 18±1 |
| Over travel | mm | 4±1 |
| Contact limit erosion of over travel | mm | 3 |
| Average closing speed | m/s | 1.0-1.6 |
| Average opening speed (contact separation 12mm) | m/s | 1.3-1.7 |
| Contact bouncing duration at closing operation | ms | ≤3 |
| Three phase contact closing non-simultaneity of contacts | ms | ≤2 |
| Three phase contact opening non-simultaneity of contacts | ms | ≤2 |
| Maximum rebound during opening | mm | ≤3 |
| Buffer stroke | mm | 13±1 |
| Circuit resistance | µΩ | ≤65 |
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