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Complete pole switch with integration of primary and secondary equipment type ZW32-12 (deep integration)
The complete pole switch with the integration of primary and secondary equipment (support type with deep integration) complies with the requirements of the standardized design scheme set out in Document No. 151 of the Equipment Department of the State Grid Corporation of China.
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Product Description
The complete pole switch with the integration of primary and secondary equipment (support type with deep integration) complies with the requirements of the standardized design scheme set out in Document No. 151 of the Equipment Department of the State Grid Corporation of China. It consists of the following main parts: vacuum circuit breaker (support type with deep integration), feeder terminal, supply voltage transformer and connecting cables with aircraft connectors. The switch is made on the basis of monolithic poles with solid insulation, inside of which a vacuum arc-extinguishing chamber, digital current and voltage transformers, and an ADMU module are integrated. The feeder terminal is made in a casing. The overall design of the product complies with the standardized design requirements of the State Grid Corporation of China. The installed current and voltage transformers are characterized by a wide measurement range, high measurement accuracy and high reliability, which allows the complete device with the integration of primary and secondary equipment to accurately detect various types of faults on the line. Designed for use on feeders, intersection points, sectioning points, branches or consumer demarcation points of 10 kV overhead distribution lines and performs the functions of disconnecting, controlling, protecting and collecting data on line losses.
| No. | Name | Unit change | Meaning |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated current | A | 630 |
| 3 | Rated frequency | Hz | 50 |
| 4 | Rated lightning impulse voltage (1.2/50 µs) | kV | 75 (phase-to-phase / phase-to-earth) / 85 (open contact) |
| 5 | Rated short-term power frequency test voltage (1 min) | kV | 42 (between phases / phase-to-earth) / 48 (open contact) |
| 6 | Rated short circuit breaking current | kA | 20 |
| 7 | Number of short circuit breaking operations | cycles | 30 |
| 8 | Rated short-time current | kA | 20 (4 s) |
| 9 | Rated peak current withstand current | kA | 50 |
| 10 | Power frequency test voltage of secondary circuits (1 min) | kV | 2 |
| 11 | Partial discharges (1.1 Ur) | pCL | ≤ 20 |
| 12 | Installation interface (fitting dimensions) | mm | 920×160 |
| 13 | Phase distance | mm | 340 |
| 14 | Weight | kg | ≤ 130 |
| 15 | Circuit breaker protection degree | — | IP67 |
| 16 | Mechanical wear resistance | cycles | 20,000 |
| 17 | Nominal sequence of operations | — | O-0.3s-CO-180s-CO |
| 18 | Transformer installation method | — | Solid-filled pole (electronic) |
| 19 | Feeder Automation Terminal (FTU) Design Type | — | Standardized shell type, block type |
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