LYHE-12 environment-friendly gas insulated ring main unit is a 12kV, three-phase AC 50Hz, complete power distribution device for single busbar and single busbar segmental system. The product has a simple structure and can provide satisfactory technical solutions for various applications and users. It can meet the ever-changing needs of the market and is suitable for the intelligent visualization requirements of the power grid.
The environmentally friendly gas geo-ring is suitable for industrial and civil power domain ring networks and distribution network comprehensive projects, especially for power distribution in urban residential areas, small secondary substations, switching stations, cable branch boxes, box-type substations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, tunnels and other places.
LYHE-12 environmental protection gas insulated ring main unit meets the requirements of relevant national standards, power industry standards, international standards and other standards. Its switches and main electrical components are integrated modules. Insulated packaging, shielded electrical connectors are used outward. Therefore, the safety of use is greatly improved. The main structure adopts a spring mechanism, and the mechanical life is more than 10,000 times. All of its operating data and equipment status can realize remote monitoring and supervision, and can be unattended. In fact, it is a power distribution device with superior performance
Optional configuration scheme:
Upper isolation vacuum circuit breaker unit
Upper isolation vacuum load switch unit
Voltage Transformer Unit
Lower isolation vacuum circuit breaker unit
Lower isolation vacuum load switch unit
Conditions of Use
1. Minimum temperature -25°C;
2. Maximum temperature (24-hour average)+35°C;
3. Maximum average relative humidity (24 hours), ≤95%; altitude ≤1500 meters;
4. Seismic ability: 8 degrees;
5. Protection level: live body seal IP67, switch cabinet shell IP4X;
6. The surrounding air should be free from obvious pollution such as corrosive combustible gas and water vapor.
7. There is no frequent violent vibration place, and the severity design meets various requirements under harsh conditions.
When it is used under the normal environmental conditions specified in GB/T3906, it is up to the user to negotiate with our company.
ltem | Load switch cabinet | Circuit breaker cabinet | |
Rated voltage (KV) | 12 | 12 | |
Rated frequency (Hz) | 50 | 50 | |
Rated insulation level (kV) | 1 min power frequency withstand voltage | 42 | 42 |
48 | 48 | ||
Lightning impulse withstand voltage (peak value) | 75 | 75 | |
85 | 85 | ||
1min power frequency withstand voltage of auxiliary/control circuit (to ground) | 2 | 2 | |
Rated current (A) | 630 | 630 | |
Rated shot-time withstand current (ffective value) (KA) | Main circuit/Earthing switch | 25/4s | 25/4s |
Ground connection circuit | 21.7/4s | 21.7/4s | |
Rated peak withstand current (KA) | Main circuit/Earthing switch | 63 | 63 |
Rated peak withstand current (KA) | 54.5 | 54.5 | |
Rated short-circuit making current (peak value) (kA) | Load switch/earthing switch | 63 | |
Rated short-circuit breaking current (kA) | 25 | ||
Rated active load breaking current (A) | 630 | 630 | |
Rated closed-loop breaking current (A) | 630 | 630 | |
5% rated active load breaking current (A) | 31.5 | O-0.3s-CO-180s-CO | |
Rated cable charging breaking current (A) | 10 | 10000/3000 | |
Rated active load breaking times (times) | 10000/3000 | 10000/3000 | |
Ground fault current breaking (A/time) | 31.5/10 | 31.5/10 | |
Line and cable charging electrical interruption under ground fault conditions (A/time) | 17.4/10 | 17.4/10 | |
Mechanical life (timnes) | Circuit Breaker/Disconnector | 10000/3000 | 10000/3000 |
Degree of protection | Switchgear housing | IP4X | IP4X |