UPS does not intermittently install basic knowledge
?In weak electrical engineering, UPS is an important system in several important systems, and before UPS is installed, it is important to consider UPS input and output distribution. The UPS manufacturer will provide complete and detailed UPS installation requirements and notices to the users, and only this requirement will ensure that the UPS supply system works properly.
In practice, the engineers can issue the relevant parameters to the customer based on the actual situation of the UPS they need to install, so that the customer is required to do so.
The following item is explained:
1, user input mains for UPS its fluctuation is smaller than general UPS allows mains fluctuation in the nominal value, for example a type UPS nominal allow mains input voltage fluctuation in 220 v + 20%, so this may require that the user mains fluctuation in + 15%, it is advantageous to the normal operation of UPS; The zero voltage requirement is less than 1.5 V when the load is not carried, and the load is less than 2V when the load is full, and the engineer can ask for the value according to the situation and load.
2, UPS in order to eliminate common-mode interference, zero, wire to ground is added between the filter capacitor, has current to ground zero, fire, may cause a zero, the electric current on the wire, so take the leakage circuit breaker tripping. So pre-ups and load circuits cannot be equipped with leaky circuit breakers to prevent UPS and its load from accidentally dropping. Would like to point out here, the user with the main purpose of the UPS is in order to the safe operation of the important equipment such as computers, rather than to ensure the security of personnel, so should not be charged in the circuit part such as socket, circuit breaker plug, open and close frequently.
3, in order to eliminate interference, most UPS input output zero line and zero line is isolated or through the choke coil, so when doing a UPS distribution can't put the UPS output (load) the zero line of the input power distribution of the zero line bus. The user can get the UPS output (load) zero to a single line of zero. Some brands of UPS enter the zero and the output line in the UPS, and you can get the input zero and the output (load) zero to the same mother row.
4, UPS input circuit breaker is designed for single input control UPS power on and off, so the UPS input circuit breaker under the mouth don't pick up other electrical equipment, so as not to affect the normal UPS input power on and off. To explain some here, some user requirements after the mains power, UPS UPS backup work very long hours, on batteries, UPS with the external long delay of the battery capacity is very big, will be to ensure that this part of the external battery can have enough charging current (generally for 10% of the total number of AH external battery), the manufacturer will give UPS another a external long delay battery charger, the charger input ac input power to the UPS power on and off at the same time, to ensure that the mains, external charger for batteries, mains break, through the battery charger to UPS inverter discharging immediately. So the ac input for this charger is to be connected to the same circuit breaker as the input from UPS.
5, at the time of UPS optional input/output circuit breaker, first rated voltage circuit breaker nominal are required to conform to the rated input and output voltage of UPS, such as single into single out UPS optional unipolar (or N + 1, or poles) rated voltage is AC220V or 250 v circuit breaker, SanJin three optional UPS three pole (or N + 3, or 4) rated voltage of AC380V or 415 v circuit breaker. Note that the circuit breaker's rating is in line with the requirements of the UPS manufacturer, the average small UPS is 10KA or 6KA, and large and medium UPS are required to be above 30KA.
The connection between UPS and the extended battery is not too long, or the loss of pressure on the battery line is too large. In addition, users tend to pay attention to the environmental temperature and humidity of the UPS machine, and the battery is placed along with the host to provide a good working environment for the battery.
It is recommended that users set up the switchboard for UPS and its load, so that the load on UPS and its protection will be centralized and reliable. This distributor shall meet the relevant national standards.
Remarks: Suggestions on battery
Must:
The appearance of the battery must be inspected before use. Storage battery in the shade (preferably no more than 200C or 6800F); Properly replenish the battery that has been stored for more than three months. To be charged in a well-ventilated environment; Securely install the battery in the device case.
Don't:
Place the battery near the source or burn the battery; Short-circuit the battery; Place the battery in a closed box. In use; Rough handling battery; Use a limp or night battery; Shock and shake batteries.?UPS不間斷電源、蓄電池、EPS.......
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