Jntech JNPH3AR-S User Manual page 8

Maintenance
Danger!
Maintenance should be done by professional maintenance technical
●
person.
Please ensure that AC side breakers should be turned off firstly, then DC
●
side breakers should be turned off before checking and maintaining,
after waiting at least 5 minutes, should measure DC side and AC side
voltage with a voltage meter, to ensure that operation under the
circumstance of no voltage between DC side and AC side.
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