Usage conditions:
(1) The ambient air temperature shall not be higher than+40 ℃ and not lower than -5 ℃. The average temperature within 24 hours shall not exceed+35 ℃.
(2) For indoor installation and use, the altitude of the usage location shall not exceed 2000M.
(3) Three in one out: The UPS host with three in one out, although the three-phase current of the main input is evenly distributed during operation, that is, each phase power is one-third of the total UPS power, considering that in the event of UPS failure, the UPS operates in a bypass state, that is, the load is all hung on one phase of the three-phase incoming line. Therefore, for UPS with three inputs and one output, the selection of input/output and bypass air switch size is the same as the three inputs and three outputs method.
(4) When installing the equipment, the inclination with respect to the vertical plane should not exceed 5%. The equipment should be installed in a place without severe vibration and impact, as well as in a place where electrical components are not corroded.
Power room distribution cabinet
1. Input: mains power access
2. Output: Network room distribution cabinet, UPS input, backup battery power supply, and various electrical facilities in the power room
3. Fire linkage
Network computer room distribution cabinet
1. Input: mains power input, UPS output
2. Output:
Output of PDU, fire protection host, and monitoring video head UPS for each cabinet:
PDU, lighting, wall plug, precision air conditioning, cabinet air conditioning, external wall TV mains power output for each cabinet:
Calculate the capacity of the input blank:
(1) Three in and three out: phase current |=P/(3 * 220V). The capacity of the main input circuit breaker and output circuit breaker is generally 1.3 * 1, and the capacity of the bypass input switch is 1.5 *. For example, for a 100KVA host, the size of the main input circuit breaker and output circuit breaker is 1.3 * 151=196.3. Therefore, a 200A circuit breaker and a bypass switch of 250A are selected. Sometimes, for convenience, the main input and output switches as well as the bypass input switch all choose circuit breakers with the same capacity, which is the capacity of the bypass circuit breaker.
(2) Single in single out: phase current I=P/(220V). The calculation method for input-output open circuit is the same as that for three in three out circuit, and will not be elaborated here.
(3) Three in one out: The UPS host with three in one out, although the three-phase current of the main input is evenly distributed during operation, that is, each phase power is one-third of the total UPS power, considering that in the event of UPS failure, the UPS operates in a bypass state, that is, the load is all hung on one phase of the three-phase incoming line. Therefore, for UPS with three inputs and one output, the selection of input/output and bypass air switch size is the same as the three inputs and three outputs method.