Product Description
SRM-12/24 series of ring main unit is SF6 gas-insulated metal common tank enclosed switchgear, consisting of load break switch unit, load break switch fuse combination electrical unit, vacuum circuit breaker unit, and the incoming line unit of bus. It adopts a range of advanced technologies and materials, with excellent electrical and mechanical properties, less affected by environment and climate, in small size, easy to install, easy to operate, with no need of maintenance, and can be flexibly combined. Its clear and intuitive design ensures simple and direct operation, the feeder's connection capacity is large, suitable for a variety of wiring systems.
UNIT DEFINITION
| Unit code | Meaning |
| C | Standard single casing load break switch unit |
| F | Load break switch and fuse combination |
| V | Apparatus unit |
| D | Cable unit(without switch) |
| + | Side casing of busbar |
| - | Top casing of busbar |
| SL | Bus couple unit |
| M | Metering unit |
| PT | PT unit |
| 1K2(4) | Double-sleeve outgoing load break switch unit |
Technical Sheet
| ltem | Unit | Load break switch unit | Combination apparatus | Fuse unit | |
| Rated voltage | kV | 12/24 | 12/24 | 12/24 | |
| Rated frequency | Hz | 50 | 50 | 50 | |
| Rated current | A | 630 | Depend on rated current of fuse | 630 | |
| P.F.withstand voltage (phase to phase.phase to earth) | kV | 42/65 | 42/65 | 42/65 | |
| Ated insulation levels | P.F.withstand voltage(Across open contacts) | 48/79 | 48/79 | 48/79 | |
| P.F.withstand voltage (Control and auxiliary circuit) | 2/2 | 2/2 | 2/2 | ||
| Lightning impulse withstand voltage (phase to phase, phase to earth) | 75/125 | 75/125 | 75/125 | ||
| Across open contacts | 85/145 | 85/145 | 85/145 | ||
| Ogauge pressure test | - | Pass | Pass | Pass | |
| Rated short time withstand current | kA | 20/4s/20/3s | - | 20/4s/20/4s | |
| Rated peak withstand current | kA | 63 | -- | 63 | |
| Rated short circuit making current | kA | 50 or 63 | Subject to high-voltage fuse | 50 | |
| Rated short circuit breaking current | kA | - | Subject to high-voltage fuse | 20/20 | |
| Rated transform current | A | - | 1750/1400 | - | |
| Rated active load breaking current | A | 630 | - | - | |
| Rated Closed loop breaking current | A | 630 | - | 630 | |
| Mechanical life | Load break switch/breaker | Time | 5000 | 5000 | 10000 |
| Isolating switch/earthing switch | 5000 | 5000 | 5000 | ||
| Loop resistance | μΩ | ≤120 | - | ≤120 | |
| Inflation pressure | Rated inflation pressure(absolute pressure) | bar | 1.3 | 1.3 | 1.3 |
| Minimum inflation pressure(absolute pressure) | 1.2 | 1.2 | 1.2 | ||
| Relative rate leakage of gas | % | ≤0.02 | ≤0.02 | ≤0.02 | |
Remark: l :Neutral point earthing system through low resistance
II :Neutral point earthing/non-earthing system through arc suppression coil
SWITCH STRUCTURE AND SIZE
Shanghai People switchgear factory, established in 1983, is a large-scale manufacturing enterprise integrating R&D, production, sales and service of high and low voltage electrical appliances, instruments, power transmission and distribution equipment, high voltage electrical components, building appliances. Our brand is known for quality and innovation, gained TOP 500 Private-enterprises & TOP 500 machinery in China. Our company has an intelligent manufacturing base of 30000 square meter, has passed ISO9001 Quality Management System & ISO4001 Environmental Management System , all of the products have obtained CCC certification and test report of authoritative test institution. The Group has been appointed as the vice-chairman unit and Advanced Enterprise by Zhejiang Province Circuit-breaker Association. We are sincerely willing to cooperate with enterprises from all over the world. GGDSRM-12/13.8/24/33kV sf6 gas Insulated Metal-enclosed Combined medium voltage Switchgear Gas 33kv switchgear price
| Certificate |
| FAQ |
1. Q: Do you have a catalogue? Can you send me the catalogue to have a check of all your products?
A: Yes , We have product catalogue.Please contact us on line or send an Email to sending the catalogue.
2. Q: I need your price list of all your products, do you have a price list
A: We do not have a price list of all of our products. Because we have so many items,and it's impossible to mark all of their price on a list.And the price are always changing because of the producing cost.If you want to check any price of our products, please feel free to contact us.We will send offer to you soon!
3. Q: I can't find the product on your catalogue, can you make this product for me?
A: Our catalogue shows most of our products,but not all.So just let us know what product do you need,and how many do you want.If we do not have it, we can also design and make a new mould to produce it.For your reference,making a ordinary mold will take about 35-45 days."
4. Q : Can you make customized products and customized packing?
A: Yes.We made a lot of customized products for our customer before. About customized packing,we can put your Logo or other info on the packing.There is no problem.Just have to point out that ,it will cause some additional cost.
5. Q: Can you provide samples ? Are the samples free ?
A: Yes,we can provide samples.Normally,we provide 1-3pcs free samples for test or quality checking.
But you have to pay for the shipping cos.If you need many items, or need more qty for each item, we will charge for the samples."
6. Q: What kind of payment do you accept ? Can I pay RMB ?
A: We accept T/T, Western Union . Please be sure that we can receive the same amount of the Invoice. And you can pay money In RMB. No problem."
7. Q : What about your delivery time?
A: We have a lot of products in stock.We can send the stock products in 3 work days.
If without stock,or stock is not enough, we will check the delivery time with you."
8. Q : How to ship my order ? Is it safe?
A: For small package, we will send it by Express, tsuch as DHL,FedEx,UPS,TNT,EMS.That's a Door to Door service.
For big packages, we will send them by Air or By sea.We will use good packing and ensure the safety. We will be responsible to any product damage caused on delivery."
9. Q: Do youu have a guarantee of your product quality?
A: We have a guarantee of two year.
10. Q: Can I become an Agent / Dealer of SRK products?
A: Welcome! But please let me know your Country/Area fisrt,We will have a check and then talk about this.If you want any other kind of cooperation,do not hesitate to contact us."
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