Overview
The DFW□-12 cable branch box (outdoor switching station) produced by RUY Power adopts international standard technology. According to the characteristics of regional distribution network transformation and the actual situation of urban distribution network electrification in China, it has developed and produced an air-filled outdoor ring network cabinet with independent intellectual property rights and first-class level.
The DFW□-12 cable branch box (outdoor switch station) adopts SRM16-12/24 series SF6 fully insulated fully enclosed ring network switch equipment. The switchgear equipment has the characteristics of modularity, scalability, full sealing, full insulation, maintenance-free, etc., widely used in industrial and mining environments, urban residential areas, streets, airports, various buildings, bustling commercial centers and other places.
The standard voltage levels of DFW□-12 cable branch box (outdoor switch station) are 12kV and 24kV, which can be expanded to distribution automation functions to realize the intelligence of the ring network cabinet, making power distribution smarter.
Normal Operating Environment
1. Ambient temperature: maximum temperature +50℃, minimum temperature -40℃, maximum daily average temperature not exceeding +35℃;
2. Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
3. Wind speed: not exceeding 35m/s;
4. Pollution level: Class III;
5. Ground inclination: 8 degrees;
6. Earthquake intensity: not more than 3 degrees;
7. Installation site: should be installed in places without fire, explosion hazards, violent vibration, good ventilation, and no corrosive gases;
8. When the equipment is installed at an altitude of 1000m or above, special explanation is required so that RUY Power can adjust SF6 pressure during manufacturing;
9. If special operating conditions are involved, please consult RUY Power.
Functions and Features
1. Using pre-fabricated silicone rubber cable connectors with touchable silicon, fully sealed, fully insulated, maintenance-free, can ensure personal safety;
2. Compact structure, small size, beautiful appearance, double-layer structure, service life up to more than 20 years;
3. Under the condition that the main line does not stop running, the branch line can be safely maintained, reducing power outage range;
4. Can be equipped with one or more SF6 load switches, wiring schemes flexible and diverse, branch outgoing lines up to 8 circuits;
5. Optional lightning arresters, fault indication devices, fuses, etc., to meet various user requirements.
Technical Parameters
| Item Name | Unit | C-type Load Switch | F-type Combined Electrical Unit | V-type Circuit Breaker Unit |
|---|---|---|---|---|
| Rated voltage | kV | 12/24 | 12/24 | 12/24 |
| Rated frequency | Hz | 50 | 50 | 50 |
| Rated current | A | 630 | 125 | 630 |
| Rated transfer current | A | 1750 | ||
| Rated insulation level (1min power-frequency withstand voltage (phase, phase-to-earth)) | kV | 42/65 | ||
| 48/79 | ||||
| 75/125 | ||||
| 85/145 | ||||
| Rated short-circuit breaking current | kV | 20 | 315 | 20 |
| Rated short-circuit making current | kA | 50 | 80 | 50 |
| Rated dynamic stable current (earth switch) | kA | 50 | 50 | |
| Rated short-time withstand current | kA | 20 (main circuit) | 20 | 20 |
| 20 (earth switch) | 20 | 20 | ||
| Rated short-time duration | s | 4 (main circuit) | 4 | 4 |
| 4 (earth switch) | ||||
| Rated peak withstand current | kA | 50 (main circuit) | 50 | |
| 50 (earth switch) | 50 0.5s | 50 | ||
| Internal arc test (IAC class) current | A | 630 | 20kA/0.5s | 630 |
| Rated loop breaking current | A | 630 | limited by fuse | 630 |
| Rated full-capacity breaking current | A | 10 | limited by fuse | 25 |
| Rated cable charging breaking current | times | 5000 | 17.4 | 3000 |
| Mechanical life | times | 3000 (load/isolating switch) | 5000 | 3000 |
| 3000 (earth switch) | 3000 | 10000 | ||
| Mpa | ||||
| SF6 gas pressure (20℃ absolute pressure) | 0.035 | |||
| Annual leakage rate | ≤ 0.025%/year | |||
| Gas tank and circuit breaker protection grade | IP67 | |||
| Cabinet and operating mechanism protection grade | IP4X |
Frequently Asked Questions
What is the rated voltage of the DFW□-12?
The DFW□-12 Cable Branch Box (Outdoor Switching Station) operates at 12/24 kV, suitable for the intended distribution application.
Does the DFW□-12 support OEM / ODM orders?
Yes. RUY Power provides custom branding, packaging and configuration for the DFW□-12 Cable Branch Box (Outdoor Switching Station) to meet project requirements.
What standards does the DFW□-12 comply with?
The DFW□-12 Cable Branch Box (Outdoor Switching Station) is designed and type-tested in accordance with IEC 60298 and DL/T404.
What is the lead time for the DFW□-12?
Standard lead time is 15-30 days depending on configuration and order quantity. Contact RUY Power for a precise delivery schedule.
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