Product overview:
CZW1 series intelligent universal circuit breaker (hereinafter referred to as the circuit breaker) is applicable to the AC 50Hz distribution network with rated working voltage of 690V and below, and rated current of 400A-6300A. It is used to distribute electric energy and protect lines and power supply equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. The circuit breaker has intelligent protection function, high precision selective protection, and improves the reliability of power supply. At the same time, it is equipped with a standard CZ485 communication interface, which can carry out the four remote functions of "remote measurement", "remote communication", "remote control" and "remote adjustment" to meet the requirements of the cluster control center and the automation system.
Product model description
| ① | Enterprise code |
| ② | Air circuit breaker |
| ③ | Design No. |
| ④ | Rated current of circuit breaker frame size |
| ⑤ | Breaking capacity code, standard type is not marked. High breaking mark "H" |
| ⑥ | Number of poles, three poles may not be marked, and four poles may be marked with "4"“ |
Normal operating conditions
● Ambient air temperature: the upper limit value shall not exceed +40℃, the lower limit value shall not be lower than -5℃, and the 24h average value shall not exceed +35℃;
● Atmospheric conditions: the relative humidity of the atmosphere shall not exceed 50% when the ambient air temperature is +4℃, and there can be a higher relative humidity at a lower temperature. The monthly average maximum relative humidity in a wet month is 90%, and the average minimum temperature in that month is +25℃, the condensation on the product surface due to temperature changes should be considered;
● Installation site: the altitude shall not exceed 2000m, and the vertical inclination of the circuit breaker shall not exceed 5°;
● Pollution level: III;
● Installation category: circuit breaker with rated working voltage of 690V and below, undervoltage release and primary coil of power transformer are used for installation category IV; The installation category of auxiliary circuit and control circuit is III
Main technical parameters
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