NSRM gas-insulated enclosed metal switchgear products are widely used in 10-35kV power distribution systems, and are the selected switch products for various urban and rural users' substation and distribution systems.
The switch cabinet is a modular unit mode, which can be combined according to different purposes; It is composed of two categories: fixed unit combination and expandable unit, which meets the needs of various substations for the flexible use of compact switchgear.
The NSRM gas-insulated enclosed metal switchgear is a completely sealed system in which the live parts and switches are enclosed in a stainless steel body. The entire switchgear is unaffected by external environmental conditions, thus ensuring operational reliability and personal safety. And it is maintenance-free. By choosing an expandable busbar, any combination can be achieved to achieve full modularity. Extended busbar safety insulation and shielding ensure reliability and safety. NSRM gas-insulated enclosed metal switchgear can also provide TV-based automation solutions, forming the concept of intelligent switchgear and minimizing the workload of on-site installation and commissioning.
NSRM gas-insulated enclosed metal switchgear is available in non-extended standard configurations and scalable standard configurations. Due to the combination of full and semi-modular modules and self-scalability, therefore
Exceptional flexibility.
NSRM gas-insulated enclosed metal switchgear implements GB standards. The design life of operation in indoor conditions (20°C) is more than 30 years.
NSRM - 12 - X / X X X
1 2 3 4 5 6
| 3.The name of the cabinet type |
1. Fuse chamber
2. Capacitive voltage indicator
3. Short Circuit Ground Fault Indicator (Accessory)
4. Pressure indicator
5. Standard with serial number
6. Analog circuit diagram
7. Fuse fuse indicator
8. Padlock device on the panel
9. Cable room
10. RTU installation room
11. Key lock (accessory)
12. Circuit breaker operation hole
13. Load switch operation hole
14. Grounding switch operation hole
15. Isolation switch operation hole
16. Open button
17. Closing button
1. Technical Description
The NSRM gas-insulated enclosed metal switchgear is mounted on a galvanized sheet frame and the switchgear unit is inside the SF6 gas box, which is made of corrosion-resistant and non-magnetic 3mm thick stainless steel plate. The SF6 airbox is a "sealed pressure system" that can operate for 30 years under normal operating conditions. The pressure of SF6 gas is 0.15~0.4bar when it works normally. The air box is equipped with a pressure relief device, when the pressure
If the force is too high, the gas can be released from the bottom or rear.
2. Switching unit
The load switch adopts the coaxial rotation double break mode, and the kinetic energy operation is carried out through the same operation hole and the slide plate, so the switch can only be in one of the three states of "closing, opening and grounding" at any time, completely avoiding misoperation.
3. Operating mechanism
The operating mechanism of the switch is installed in the front part of the outside of the air box, which is treated by special technology to prevent rust, which is convenient for manual operation and maintenance, and is easy to realize electric operation.
| Ambient temperature: -40°C ~ 40°C |
| Relative humidity: |
| Daily average < 95%, monthly average < 95% |
| Monthly average less than 95% |
| GB/T11022 |
IEC60129 |
| GB1985 |
IEC60298 |
| GB16926 |
IEC60056 |
| GB3906 |
IEC60265 |
| GB3309 |
IEC60420 |
| GB38041 |
IEC60694 |
| Model |
Module C |
Module F |
Module V |
| load switch |
Combination appliances |
Vacuum switch |
Isolating/grounding switches |
| Rated voltage |
kV |
12 |
12 |
12 |
12 |
| Rated frequency |
Hz |
50 |
50 |
50 |
50 |
| Power Frequency Withstand Voltage (Phase-to-Phase/Port) |
kV |
42/48 |
42/48 |
42/48 |
42/48 |
| Withstand voltage for lightning impulses |
kV |
75/85 |
75/85 |
75/85 |
75/85 |
| Current rating |
A |
630 |
(note 1) |
630 |
|
| Rated closed-loop interrupting current |
A |
630 |
|
|
|
| Rated cable charging breaking current |
A |
135/135 |
|
|
|
| Rated short-circuit closing current (peak) |
A |
50 |
80 |
|
|
| Rated peak withstand current |
kA |
50 |
|
|
|
| Rated short-time withstand current |
kA/3s |
20 |
|
|
|
| Rated short-circuit interrupting current |
kA |
|
31.5 |
20 |
|
| Rated transfer current |
A |
|
1750 |
|
|
| Equipped with fuse maximum current |
A |
- |
125 |
|
|
| Loop resistance |
μΩ |
≤300 |
≤600 |
|
|
| Mechanical life |
times |
5000 |
3000 |
10000 |
2000 |
| (note1):Depends on the current rating of the fuse |
Wenzhou Naisite Electric Co., Ltd is a technology oriented transmission and distribution equipment manufacturing enterprises, since its establishment in 2011, focus on transmission and distribution equipment technology progress, advocating technological innovation, introduce new energy prefabricated, a secondary fusion ring cage, environmental protection cabinet,Transformers, cable branch box, box type substation such as intelligent high and low voltage transmission and distribution equipment. Applicable to electric power, railway, petrochemical, subway, municipal construction, steel, coal and other industries. The company's products have achieved a number of technological breakthroughs in environmental protection, miniaturization, intelligence, maintenance free and other aspects. The headquarters of Wenzhou Naisi Electric Co., Ltd is located in the core area of Wenzhou Yueqing Economic Development Zone, "the capital of Electrical appliances in China". Has an excellent domestic intelligent distribution network products assembly line.
The company has a vacuum box helium leak detection system, local discharge test laboratory and other advanced inspection and test equipment system. With the basic experimental facilities and research environment needed for advanced technology development and scientific research, the products are tested according to the international IEC standards. The enterprise has passed the IS09001 quality system certification, IS014001 environmental system certification and OHSAS18001 occupational health and safety management system certification, the products have been obtained the CNAS national accreditation laboratory certification report.
| Q: Are you a trading company or manufacturer ? |
| A: We are a professional factory with 10 years experience in the field of High and Low voltage switchgears,Substation,transformers,cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc.Our factory is the excellent supplier of State Grid Corporation of China . |
| Q: Do you accept customized serveice ? |
| A: We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters . |
| Q:How long is your delivery lead time ? |
| A: It depends on your product requirement and quantity . Generally , 5~10 working days is available . |
| Q: How do you solve quality problems? |
| A: Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make a satisfied soluton within 2 days. |
| Q: What is your payment terms ? |
| A: 30%T/T in advance,70% before shipment . West union , L/C are also acceptable . |
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