Shandong Deyuan Electric Power Technology Co.
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Primary and Secondary Integrated Ring Main Unit
Primary and secondary integrated ring main cabinet (box) is the core of cable line fault rapid positioning self-healing solution, and also the key equipment for the current standardization, lean and intelligent construction of distribution networks.
Product Parameters
| serial number | Parameter name | unit (of measure) | parameter value | |
| "one" radical in Chinese characters (Kangxi radical 1) | Common Parameters for Ring Network Cabinets | |||
| 1 | Type of interrupter | / | vacuums | |
| 2 | Gas rated pressure (20°C gauge pressure) | MPa | 0.01 | |
| stupid (Beijing dialect) | Circuit Breaker Parameters | |||
| 1 | Type of interrupter | / | vacuums | |
| 2 | Main circuit resistance | μΩ | ≤120 | |
| 3 | Average speed of circuit breaker opening and closing | Slotting speed | m/s | 1.4±0.5 |
| Closing speed | 1.1±0.5 | |||
| 4 | mechanical life | substandard | ≥10000 (vacuum) | |
| surname San | Disconnect Switch Parameters | |||
| 1 | rated current | A | 630 | |
| 2 | Main circuit resistance | μΩ | Integral to circuit breaker | |
| 4 | Voltage transformer and fuse parameters | |||
| 1 | Type or model | / | Electromagnetic (three-phase five-column) | |
| 2 | Fuse type | / | spiral | |
| 3 | Fuse current rating | A | 1 | |
| 4 | Rated short-circuit breaking current of fuses | kA | 50 | |
| 5 | Lightning arrester parameters | |||
| 1 | Peak residual voltage under lightning surge current (5kA, 8/20μs) | kV | 45/50 | |
| 2 | 75% Leakage Current at 1mA DC Reference Voltage | mA | ≤50*10-6 | |
| 3 | continuous current | full current | mA | 0.8 |
| resistive current | mA | ≤200*10-6 | ||
| 6 | outer cabinet | |||
| 1 | Housing Material | / | 304 stainless steel | |
| 7 | DTU | |||
| 1 | Analog input nominal value | phase current | A | 1 or 5 |
| 2 | Feeder automation functions | / | Centralized feeder automation function or distributed + centralized feeder automation function | |
| 3 | Backup power supply method | / | Maintenance-free valve regulated lead-acid batteries or supercapacitors or other new energy batteries | |
Core Function
- Integrated design. Realize information collection and automation control. The station terminals and fault isolation devices are designed as a complete set, which can collect phase current, voltage, and zero sequence current and zero sequence voltage, and combine with the distribution automation system through fiber optic/wireless communication to realize data collection, parameter setting, and remote control of the line.
- Cabinet flexible configuration, supporting full circuit breaker configuration, full load switch configuration, inlet load switch outlet circuit breaker and other configuration programs to meet customer requirements.
- Safe and reliable, the switching device and main busbar are completely sealed in the fully insulated steel structure box, the cabinet structure is very compact. Anti-skidding shell can be installed with common padlock to ensure maximum operational safety.
- Maintenance-free design. Blowing type arc extinguishing design to minimize contact wear, in the factory inflatable encapsulation is completed, the site does not require more installation and commissioning, the design of the primary equipment maintenance-free life of up to 30 years or more.
Application Scenario
Primary and secondary integrated ring main cabinets have been widely used in upgrading and new construction of distribution networks in urban and industrial areas.
