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Combined withdrawable device with vacuum contactor and fuse VCNR-12 series
This series of products is a three-phase high-voltage indoor switching equipment with a rated operating voltage of the main circuit of 7.2 kV and 12 kV, frequency 50-60 Hz.
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Product Description
This series of products is a three-phase high-voltage indoor switching equipment with a rated operating voltage of the main circuit of 7.2 kV and 12 kV, frequency 50-60 Hz. It is distinguished by a flexible functional layout, compact and reliable design, multifunctional protection, long service life and the possibility of frequent switching. Widely used for switching on and off load circuits of asynchronous motors, transformers, as well as for reactive power compensation.
Contactors are supplied in stationary and withdrawable versions. The withdrawable version is compatible with distribution cabinets type KYN28A (GZS1) with widths of 550, 650 and 800 mm and can be used to replace VSC/P contactors.
The main circuit of the contactor is made using cast-pole technology, which ensures high insulation characteristics and long service life. The drive is available in two versions: with electromagnetic fixation and with a magnetic mechanism, which ensures stable and reliable operation with frequent switching. In combination with overcurrent fuses, it forms a complete F-C device.
| No. | Parameter | Unit change | Meaning | ||
| 1 | Rated voltage | kV | 7.2 | 12 | |
| 2 | Rated frequency | Hz | 50 | ||
| 3 | Rated operating current | A | 315 | 160 | |
| 4 | Rated peak current withstand current | kA | 10 | ||
| 5 | Rated short circuit breaking current | kA | 50 | ||
| 6 | Rated short-circuit inrush current (peak) | kA | 130 | ||
| 7 | Rated thermal current | A s | 4000-4 | ||
| 8 | Application category | AC-3, AC-4 | |||
| 9 | Isolation level | Power frequency test voltage for 1 min | kV | 32 | 45 |
| Lightning impulse test voltage | kV | 60 | 75 | ||
| 10 | Mechanical wear resistance | Permanent magnet mechanism (mechanical locking) | 10 thousand cycles | 20 | |
| Electrical fixation | 10 thousand cycles | 25 | |||
| 11 | Nominal operating mode | Continuous operating mode | |||
| 12 | Rated operating frequency | 10 thousand cycles/h | 300 | ||
| 13 | Main circuit resistance (without fuse) | μΩ | ≤300 | ||
| 14 | Rated voltage of auxiliary and control circuits | B | AC or DC: 110 / 220 | ||
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