IST Series UPS (10kVA-200kVA)
User Manual
1 Safety Instructions
7
Before maintenance, please disconnect the AC power and battery to isolate the power
input. It is better to measure the input, output and battery terminal bars by a voltmeter to
ensure the input power is disconnected and in a safe condition.
Even if all external power are disconnected, there still exists residual electric charge on
the capacitance inside the UPS, and the output terminal bars may exists high voltage
which endangers human life. It is necessary to set the UPS aside for enough time (≥10
min) to release all charge before opening the UPS chassis.
The battery cables are not isolated with AC input. There may exist dangerous voltage
between battery terminal and grounding terminal. Pay attention to the insulation when
installing and using the battery.
Do not wear conductive objects, such as watches, bracelets and rings during operating.
The installing man should have the qualification of high voltage and AC power operation.
The maintenance and repair for the power system only can be done by professional
persons.
Leakage risk! Before performing electrical connection, the UPS should be grounded.
The ground terminal must be connected to the ground.
Drilling holes on the cabinet is prohibited! Inappropriate drilling will damage the components
inside the UPS. Metal debris generated by drilling will lead to circuit board short circuit.
1.3 Environment Requirements
The used environment may influence the service life and reliability of the device. So, please
avoid using the device in the following environment for long time.
The place where beyond the specification (normal work temperature: -5
℃
～
40
℃
,
relative humidity: 0%-95%).
The place where has direct sunshine and rain.
The place where has vibration or easy impacted.
The place where has dust, corrosive material, salty or flammable gas.
The place where without good ventilation or closed.
