gpvsj junction box-凯发一触即发

we mentioned
solar power system communication junction box and component requirements
the environment temperature protection appliances (circuit breaker)
● 50 °c
in line with the requirements of photovoltaic system performance
● rated voltage in ac480 ~ 690 v pv breaker, should be carried out in accordance with the ul489 circuit breaker rating of 100%。
in accordance with ul 489 b extreme environmental cycling test：
● 50 high and low temperature cycle, each cycle includes 15 minutes to 40 ℃ low temperature and followed by 15 minutes of 90 ℃ high temperature (any appropriate temperature gradient).the sample (s) at the end of the 50 cycles, will be in 23 ℃ 3 ℃ keep at room temperature for at least three hours.when placed after 3 h at room temperature, the breaker will be ul489 7.1.2.2 calibration of 200% of the current test, tripping time should be no more than ul489 the requirement in table 7.1.2.2.1 allowed range。
runtime environment
● operating temperature: 25 ℃ ~ 70 ℃。
● storage temperature: - 45 ℃ ~ 70 ℃。
● temperature change is big, heat bilges cold shrink significantly。
● special customized according to actual situation。
working voltage
● working voltage: ac480v 。
high degree of protection
● plant set up in the desert, part used in damp and rainy region has high requirements of the corrosion, cabinet put oneself in another's protection grade requirements as much as: ip65。
high sea dials high
● the qinghai-tibet plateau is higher than the average elevation of 4000 meters, heat dissipation, rated voltage drop obviously。

technical parameters