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Product Overview
ZW8-12F(G) intelligent outdoor high-voltage vacuum circuit breaker (hereinafter referred to as intelligent circuit breaker) is used for three-phase power system with AC 50Hz and voltage 10-12kV. It is used to disconnect and close load current. It has overload and short-circuit protection functions, quick-break protection function, time-limited delay protection function, automatic reclosing function, and can also be equipped with Lightning Arrester or disconnector (i.e. circuit breaker and disconnector combination, hereinafter referred to as "combined intelligent circuit breaker") according to user needs. The intelligent circuit breaker has its own power supply and can be remotely controlled nearby. It is equipped with CT and PT interfaces to meet telemetry requirements.
Technical Parameters
Items | Unit | Date | ||
rated voltage | V | 12 | ||
rated insulation level | 1minPower frequency withstand voltage | Dry test | kA | 42 |
34 | ||||
Lightning impulse withstand voltage (peak value) | Wet test | 75 | ||
Rated current | A | 630、400、200 | ||
Rated short-circuit breaking current | kA | 20、16、12.5 | ||
Rated operating sequence | O-0.3s-CO-180s-CO | |||
Rated short-circuit breaking current times | times | 30 | ||
Rated short-circuit closing current (peak) | kA | 50 | ||
Rated peak withstand current | kA | 50 | ||
Technical Parameters
Items | Unit | Date | |
Rated short-time withstand current | 20 | ||
Rated short-circuit breaking duration | s | 4 | |
Opening time (Split excitation release) | Maximum operating voltage | ms | 15~50 |
Rated operating voltage | 15~50 | ||
minimum operate voltage | 30~60 | ||
close time | ms | 25~50 | |
Total breaking time | ms | ≤100 | |
arcing time | ms | ≤20 | |
mechanical life | times | 10000 | |
Closing power | J | 70 | |
Rated input power of energy storage motor | W | ≤220 | |
Rated operating voltage and rated voltage of auxiliary circuit | V | DC220 110 24 | |
AC220 110 24 | |||
Energy storage time at rated voltage | s | <8 | |
over-current release | Rated current | A | 5 |
Accuracy of tripping current | % | ±10 | |
Overcurrent regulation | A | 1~9 | |
Quick break adjustment | ms | 6~20 | |
Delay Time | 80~500 | ||
Remote control distance | m | 30 | |
Overlapping times | times | 1~3 | |
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