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SRM6-12 Fully Insulated Gas-Insulated Ring Main Unit - China Suppliers & Factory with 30+ Years Lifespan
Model and Definitions
For example:
◇
SRM6-12-C/630DL indicates a load switch cabinet with a nominal voltage of 12kV, rated current of 630A, right-side expansion, and left-side cable entry and exit method.
◇
SRM6-12-CF/6301R signifies a combination unit formed by a load switch cabinet and a fuse combination cabinet. It has a bus voltage of 12kV and a bus current of 630A, with left-side expansion and right-side cable entry and exit method.
Performance Indexes
| Unit Code | Definition | Unit Code | Definition | ||
| C | Standard Single Set Load Switch Unit | - | Busbar Top Insulator | ||
| F | Load Switch-Fuse Composite Apparatus Unit | SL | Bus Coupler Unit | ||
| V | Circuit Breaker Unit | M | Measurement Unit | ||
| D | Cable Entry Unit (Without Switch) | PT | PT UNIT | ||
| + | Busbar Side lnsulator | 1K2(4) | Load Switch Unit with Double Insulator | ||
Technical Specifications
| Model | C Module | F Module | V Module | CB Module | ||
| Compound Switch | Composite Apparatus | Vacuum Switch | Isolation/ Earthing Switch | Vacuum Breaker | Isolation/ Earthing Switch | |
| Nominal Voltage (KV) | 12 | 12 | 12 | 12 | 12 | 12 |
| Rated Frequency (Hz) | 50 | 50 | 50 | 50 | 50 | 50 |
| Power Frequency Withstand Voltage (Interphase/Terminal) (KV) | 42/48 | 42/48 | 42/48 | 42/48 | 42/48 | 42/48 |
| Lighting lmpulse Withstand Voltage (kV) | 75/85 | 75/85 | 75/85 | 75/85 | 75/85 | 75/85 |
| Rated Currency (A) | 630 | Note ¹ | 630 | 1250/630 | ||
| Rated Closed Loop Breaking Current (A) | 630 | |||||
| Rated Cable Charge Breaking Current (A) | 135/135 | |||||
| Rated Circuit Making Current (Peak) (A) | 50 | 80 | ||||
| Rated Peak Withstand Current (kA) | 50 | |||||
| Rated Short-time Withstand Current (kA/3s) | 20 | |||||
| Rated Short-circuit Breaking Current (kA) | 31.5 | 20 | 25 | |||
| Rated Transfer Current (A) | 1750 | |||||
| Maximum Current for Compatible Fuses (A) | 125 | |||||
| Loop Resistance (Ω) | ≤ 300 | ≤ 600 | ||||
| Machinery Service Life (Times) | 5000 | 3000 | 5000 | 2000 | 5000 | 5000 |
Note: 1) It depends on the current rating of the fuse.
SRM 6 - 1 2 Gas-Insulated Switchgear Structure and Dimensions
Frequently Asked Questions
Q
What does the designation "SRM6-12-C/630DL" stand for?
It indicates a load switch cabinet with a nominal voltage of 12kV, rated current of 630A, right-side expansion, and left-side cable entry and exit method.
Q
What are the definitions of unit codes 'C', 'F', and 'V' in the performance indexes?
'C' stands for the Standard Single Set Load Switch Unit, 'F' stands for the Load Switch-Fuse Composite Apparatus Unit, and 'V' refers to the Circuit Breaker Unit.
Q
What is the rated frequency and nominal voltage of the SRM 6-12 series?
The series operates at a nominal voltage of 12 kV and a rated frequency of 50 Hz.
Q
What is the machinery service life of the C Module and V Module?
The C Module (Compound Switch) and V Module (Vacuum Switch) both have a machinery service life of 5000 times.
Q
How is the rated current determined for the F Module (Composite Apparatus)?
The rated current for the F Module depends on the current rating of the compatible fuse used.