NIetz Electric Co.,Ltd
Soft starter SSN/SSA serie User Manual
7
3.
Environment and Installation
3.1 Environment
The environment is important to the equipment life. So please install the soft starter on the
site described below
◆
Operation Condition for the regular products
Power Supply: Urban power, self-provided substation, diesel generating sets
Three-phase AC: 380V or 660V or 1140V (-10%, +15%), 50Hz.
(note：voltage level should be matched to the rate voltage of the actually motor, user should
explain the voltage level in the purchase order if it is special.)
Motor: Squirrel cage asynchronous motor. (Please explain in the purchase order if it is special)
Start frequency: less than 20 times per hour for Standard products (Please explain in the purchase
order if the motor should be start more frequent)
Cooling: Natural air-cooled or Fan air cooling
IP Code:IP20
Environment condition: If the altitude is above 2000 M, user should select the higher power
equipment
Environment Temperature: -25℃ to +40℃.
Relative humidity: ≤95% (20℃士 5℃) non-condensing, no inflammable，explosive gases, no
conducive dust.
Install in an enclosure with good ventilation. The vibration is less than 0.5G
Structure Form: for the SSN series product, bypass contactor should be allocated by user
for the SSA series product, there is inner bypass contactor
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Special conditions
If unconventional products using in the special conditions is needed, please explain in the
purchase order
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