product description
HXGN15-12 series fixed metal-enclosed switchgear (referred to as ring main unit) is suitable for breaking loads and short-circuit and closing short-circuit currents in AC 50HZ, 10KV power grids. This ring main unit is equipped with a spring operating mechanism, which can be either electric or manual operation of the load switch. The grounding switch and isolating switch are equipped with manual operating mechanisms. It is widely used in distribution systems with high power supply reliability such as urban commercial centers, industrial areas, airports, electrified railways, highways, etc. It can be used alone indoors and outdoors, or can be inherited in prefabricated substations.
Model and its meaning
main feature
1. The switch cabinet has reliable "five prevention" functions, and a live display device is installed on the cabinet.
2. The protection level of the shell is not lower than IP2X. 3. Each cabinet has a simulation diagram of the wiring scheme, which can clearly reflect the primary component configuration of the switch cabinet.
4. It is assembled from high-quality galvanized steel plates and divided into busbar room, switch room, cable room and instrument room. Each room is relatively independent and has a pressure relief channel.
5. Provide two sets of special installation and debugging tools.
6. All components in the HXGN15-12 series ring main unit meet the requirements of relevant national standards.
7. Provide valid type test reports and product identification certificates for products.
8. Provide certificates and test reports for all electrical components in the switch cabinet when leaving the factory.
The main technical parameters
name | unit | parameter |
Rated voltage/maximum working voltage | KV | 10/12 |
Rated current | A | 630 |
Main bus current | Line counters | A | 630 |
Outlet cabinet (combined electrical appliances) | 125 |
Rated short-time withstand current | KA | 20 |
Rated short circuit duration | S | 4 |
Rated peak withstand current | KA | 50 |
Rated short circuit making current | KA | 50 |
Rated active load breaking current | A | 630 |
Closed loop breaking current | A | 630 |
Rated cable charging breaking current | KA | 20 |
Rated short-time withstand current of earthing switch | KA | 20 |
Rated short circuit duration of earthing switch | S | 4(2) |
Rated peak withstand current of earthing switch | KA | 50 |
Rated short-circuit making current of earthing switch | KA | 50 |
1min rated power frequency withstand voltage | Phase-to-phase, phase-to-ground, vacuum load switch break | KV | 42 |
Isolating switch fracture | 48 |
Rated lightning charge withstand voltage | Phase-to-phase, phase-to-ground, vacuum load switch break | kV | 75 |
Isolating switch fracture | 85 |
Mechanical life | Vacuum load switch | Second-rate | 10000 |
Ground switch (knife), isolation switch (knife) | 2000 |
Handover current | A | 3150 |
Structure and working principle
主要配装ZFN-10型真空负荷开关，主要方案有进线柜和出线柜等。
1、进线柜方案：柜内主回路有一台ZFN-10型真空负荷开关，它配装有隔离刀，酌情还配装接地刀所组成，三者共装在一个机架上，并互有联锁。因此可实现接通母线、隔离、接地三个工位的操作，柜内还可灵活装配CT、PT等元件。
2、出线柜方案：柜内主回路有一台ZFN-10型真空负荷开关和带撞击器的熔断器（有隔离开关的作用）及接地刀所组成，也可实现三工位操作，柜内还可灵活装配CT、PT和ZNO避雷器等元件。因此有时可以省去计量柜。
HXGN15-12环网柜外形及安装尺寸
