Basic Info.
Product Description
HXGN17-12 Cubicle Fixed Type Alternating-current Metal-enclosed Switchgear (hereinafter referred to as ring main unit) is a new type high-voltage switchgear designed for the transformation and construction of urban power grid. It also can be used for breaking load current or short-circuit current and making short-circuit current in power systems. It is equipped with FZRN25 and FZRN21 vacuum load switch, adopts spring operating mechanism, which can be operated by manual or by electric. The earthing switch and disconnector are equipped with manual operating mechanism. This ring main unit is
of complete set, small size, no flaming or explosive danger, with reliable"five preventions".
It complies with the standards GB3906 A.C. metal-enclosed switchgear for rated voltages of 3~35kV, IEC60420 High-voltage alternating current switch-fuse combinations
| No. | Item | Unit | Data | |||
| | | | FN12-10 | FZN25-12 | ||
| 3.1 | Rated voltage | kV | 12 | |||
| 3.2 | Rated current | load break switchgear | A | 630 | ||
| | | Combined switchgear | A | 125 | ||
| 3.3 | Rated frequency | Hz | 50 | |||
| 3.4 | Rated short-circuit breaking current | kA | 31.5 | |||
| | Rated short-time withstand current | kA | 20 | |||
| | Rated active on-load breaking current | A | 630 | |||
| 3.5 | Rated peak withstand current | kA | 50 | |||
| 3.6 | Rated power frequency voltage withstands inter-phase, to earth and to the open contact | kV | 42 | 48 | ||
| 3.7 | Thundering withstands voltage inter-phase, to earth and to the open the contact | kV | 75 | 85 | ||
| 3.8 | Mechanical life | times | 10000 | |||
| 3.9 | Rated take-over current | A | 3150 | |||
| 3.10 | Protection level | | IP2X | |||
| 3.11 | Operating mode | | Manual or automatic | |||
| 3.12 | Control circuit rated voltage | V | DC: 110, AC:220 | |||
