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[China]
Trade Verify
Address: No.18 Shigui Avenue, Jieshi Town, Banan District, Chongqing，China
Contact name:Shirley
Chongqing Bosun Electrical Co., Ltd. |
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Verified Suppliers
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SF6 Air Insulated Metal Clad Impact Test Power Distribution Transformear
Product Description
Control systems
• Local control involves operators manually operating equipment at the substation.
• Remote control uses SCADA and communication systems to operate the substation from a control center.
• Automatic control employs relays, logic controllers and processors to regulate operations with minimal operator intervention.
Protection systems
• Overcurrent protection uses fuses and circuit breakers to detect and interrupt fault currents.
• Differential protection compares currents at the two ends of a transmission line or transformer to detect internal faults.
• Directional protection determines the direction of a fault to selectively isolate the affected section.
• Distance protection monitors impedance to detect faults at a certain distance from the substation.
Faults and failures
• Insulation failure is a major cause of faults and outages in substations. It can occur due to overvoltage, excess heat, contamination, etc.
• Temporary overvoltages from lightening, faults and switching can damage insulation if adequate arresters are not provided.
• Overloading of lines and equipment beyond their ratings can cause damage, overheating and failure.
• Human error during maintenance and ops can also lead to equipment damage and outages.
• Fires are a significant hazard in substations due to the presence of flammable insulating oil and other combustible materials.
Specification
| Rated Voltage | 12/17.5/24kV | 36kV |
Standard applicable | IEC 62271 – 202 (IEC 61330) | IEC 62271 – 202 (IEC 61330) |
| Normal ambient temperature | 40 ° C | 40 ° C |
| Maximum ambient temperature | 50 ° C | 50 ° C |
| Enclosure construction | Modular | Modular |
| Ventilation | Natural | Natural |
| Temperature class (Std.) | K 10 | K 10 |
| MV and LV compartment | IP 54 | IP 54 |
| Transformer compartment | IP 23 | IP 23 |
| Rated voltage (kV) | 12/24kV | 36kV |
| Power frequency (kV rms) | 28/50 | 70 |
| Impulse (kV p) | 75/125 | 170 |
| Rated frequency (Hz) | 50/60 | 50/60 |
| Rated normal current (A) | 630 | 630 |
| Breaking capacity (A) | 630 | 630 |
| Making capacity (kA) | 52.5 / 40 | 50 |
| Rated normal current (A) | 630 | 630 |
| Breaking capacity (kA) | 21/16 | 20 |
| Making capacity (kA) | 52.5 / 40 | 50 |
| Rated power (kVA) – oil type | 2500 | 2000 |
| Rated power (kVA) – Dry type | 2500 | 2000 |
| Rated secondary voltage (V) | 433 | 433 |
| Vector group | Dyn 11 | Dyn 11 |
| Tapping range | + 5 in steps of 2.5% | + 5 in steps of 2.5% |
| IP | Yes | Yes |
| Internal arc | Yes | Yes |
| Enclosure class | Yes | Yes |
| Impact test | Yes | Yes |
| Short circuit test on earthing | Yes | Yes |
Team Show
1.Professional team
2.Comprehensive services
3.Strict quality control
4.Comprehensive inspection
5.Responsibility guarantee
Engineering
1.Power generation plants
2.Substations
3.Commercial buildings
4.Data centers
5.Renewable energy systems
6.Transportation
Why Choose Us
1.Our Expertise
2.Quality Products/Services
3.Competitive Pricing
4.Innovation
6.Possibles
7.Authorization by ABB Schneider Siemens
