Why can't the KELONG UPS power supply be protected by current leakage?

KELONG UPS power front-end can not add leakage protection reasons:
KELONG UPS 1-3KVA power input is not recommended by the leakage switch rate without the best rate but for the input of the UPS 6K 20KVA is not connected leakage current leakage protection rate to a maximum of 5% input rate as 6KVA full load current 40A, so the leakage current for 2A. is not required to rate can also don't pick for the output of the leakage switch. Note that the KELONG (UPS power) gives the input side leakage of the 1KVA UPS not more than 3.5 ma. This refers to a well functioning UPS power supply under normal conditions. Therefore, the protective current of the primary side leakage current shall not be less than 3.5 ma. The previous UPS cannot be installed leakage protection device is a weakness of the UPS industry, is still not a manufacturer can be solved, popular to say UPS is itself a leakage device, because when UPS online work should be filtered to the rectifier, voltage when some clutter, small current will release through the bottom line this will cause misoperation off leakage protector. The installation of leakage protection device in front of the UPS. UPS must not be general in order to eliminate the common mode interference, L N line has to filter circuit, KELONG UPS power supply, due to the filter circuit on PE, is very easy to cause the current L N line not equal, and set the current leakage protection device for large 60MA, point to 300MA, is very easy to cause the error protection of leakage protection. Therefore, the general UPS is not installed in front of the leakage protector so UPS The power supply itself can not be protected with electric leakage.
The output end of the UPS install leakage protection old tripping rate what is the problem of how to solve the occlusion rate
Does this KELONG UPS provide only one server and switch power supply with Load Tripping? The answer is not rate with Load Tripping rate is ups if insufficient power or load short circuit, UPS input front-end add leakage protection. The output rate of UPS power distribution cabinet can be configured leakage protection device or leakage protector. The frequency converter is similar to the UPS, and the input terminal can not connect with the earth leakage protective switch. The same filter leakage rate. Adopt the method of installing isolating transformer at the front of UPS. With the isolation transformer UPS power down rate start rate is no longer in the case of UPS occlusion in UPS FireWire, zero line and ground anti surge and wave interference Technology Co. It is because of the anti harmonic rate surge circuit is connected with a line from the end to the ground rather than the rate rate rate of the end line capacitors or other components rate rate resulting in leakage current rate which may cause leakage protection switch action.
Xiamen KELONG UPS power leakage protection switch the action principle of Xiamen KELONG UPS leakage protection switch is a core rate in group two had a rate of input current winding and an output winding current rate when no leakage rate when the input current and output current equal rate on the core flux vector and two zero rate will not be in the third winding induction voltage or third winding rate will form occlusion by amplifying the induction voltage to drive the actuator rate to switch trip. KELONG UPS front power leakage protection switch rate while UPS power supply without leakage rate due to harmonic flux vector in the core and the formation of iron core and magnetic hysteresis cannot be zero rate and appeared similar leakage rate. The earth leakage protection device of frequent trip. So we try not to rate on KELONG UPS AC input rate to avoid the use of circuit breaker switch with leakage protection rate rate. UPS power is an uninterruptible power supply, it is the existence of a AC - DC and DC - AC rate and a process rate electricity rate to the rectifier battery charging rate while providing DC voltage to the inverter work rate when mains failure rate directly from the battery to provide DC voltage to the inverter rate rate rate DC the work rate standard AC output. The causes of these problems involve three aspects of the quality of UPS uninterruptible power supply itself, the quality of UPS uninterruptible power supply installation and the quality of users' use. This requires the selection of UPS uninterruptible power supply that meets the requirements and the proper installation of the UPS uninterruptible power supply. In the quality of user use, it is mainly determined by the user's specific use of environmental quality, power supply quality and daily maintenance quality. When the UPS battery fails, the cause should be checked first. Distinguish between the source of the fault load or UPS power supply system, host or battery?. Although the UPS host has the self-test function, but it is opposite, but although the replacement parts are very convenient, but to repair the fault point, still needs to do a lot of analysis and testing work. UPS with battery components, built-in and external two, built-in battery, UPS relatively convenient to use, there is no UPS host and battery connection problems. And the external battery, UPS must pay attention to the host and battery connection problems. First of all, the battery must be connected by positive and negative polarity, and check the battery voltage, voltage and UPS host requirements in order to connect properly. Next, open the UPS host and measure the charging power of the UPS host
Is the voltage value correct?. Uninterruptible power supply for long idle UPS, before re put into use, it is better to let the UPS float on the battery for later use 10-12h charging circuit inside the machine. For the backup UPS users, if UPS long-term work in the backup work state, that every month, let UPS in the operating state of at least 2 3min rate, in order to activate the battery.
Breaker rate KELONG UPS power supply load circuit can not be installed with leakage protection UPS in order to eliminate the common mode interference rate of between zero and FireWire and zero rate of filter capacitor and fire are current rate may cause zero line current, so that the rate ranging from tripping of the circuit breaker with leakage. place