1756-DNB/C

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Requirements for each component
AC input
Each complete charging device There should be two AC inputs that serve as backup for each other. When the running AC input is lost, it can automatically switch to the backup AC input for power supply.
For a charging device with a rated AC input of 3, the phase voltage should be detected. For a charging device with a rated AC input of 3, each line voltage should be monitored. The accuracy of its meter should be no less than .
The DC power supply system should be equipped with protection devices to prevent overvoltage.
Busbar voltage regulating device
For systems with a busbar voltage regulating device between the power bus (or battery output) and the control bus, effective measures should be taken to prevent the control bus from losing pressure due to the open circuit of the busbar voltage regulating device.
The nominal voltage of the bus voltage regulating device is not less than the nominal voltage of the system.
Voltage and current monitoring of DC system
It should be able to monitor parameters such as DC bus voltage, charging voltage, battery pack voltage, charging device output current, and battery charging and discharging current.
The battery output ammeter should be considered to be able to indicate the discharge current when the battery discharge circuit is working, otherwise a special discharge ammeter should be installed.
DC voltmeters and ammeters should be used with an accuracy of not less than .
The battery monitor should monitor the voltage of each single cell, and its measurement error should be r.
Battery pack (cabinet)
Acid-proof batteries and large-capacity valve-controlled batteries should be installed in a dedicated battery room. Cadmium-nickel batteries with a capacity of 3 and below and valve-regulated batteries with a capacity of 3 and below can be installed in the battery cabinet.
A thermometer should be installed in the battery cabinet.
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