Customization: | Available |
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Type: | Distribution Metering Box |
Structure: | Metal Seal |
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ltem | Unit | Techincal parameter | ||
Rated voltage | kV | 12 | ||
Insulating medium | ||||
Rated frequency | Hz | 50/60 | ||
Rated current | A | 630 | ||
Temperature rise test current | 1.1Ir | |||
Rated power frequency 1min withstand voltage (relative) | kV | 42 | ||
Peak rated lightning impulse withstand voltage (1.2/50ms) (relative) | kV | 75 | ||
Rated short-time withstand current and duration | kA/s | 20/4 | ||
Rated peak withstand current | kA | 50 | ||
Duration of ignition | s | 1 | ||
Short-time power frequency withstand voltage of auxiliary and control circuits | kV | 2 | ||
Class of protection | Outer box | IP43 | ||
Rated gas pressure (20ºC gauge pressure)) | bar | 1.45 | ||
Annual leakage rate of gas | ≤0.01% |