NXZ Automatic Transfer Switch
8
Installation of Flash Barrier
15
Inter-phase flash barrier
①Be sure to install flash
barriers before product
operation.
Do not operate the
product with wet
hands.
Check if the wiring is
correct.
After installation, the
insulation resistance to
the ground shall not be
less than 10mΩ.
Before insulation test,
please pull out the
product controller first.
②
③
④
9
Common Faults and Solutions
Table 4 Non-common Faults and Solutions
Description Causes and solutions
The state of fire control linkage remains after the fire
control linkage signal of terminals 401 and 402 of the
controller is removed.
When the normal power supply or alternative power
supply fails, the product cannot be manually or
automatically switched to the failed circuit of power supply.
In automatic state, when the normal power supply recovers
from the fault to the set undervoltage switching value, the
product does not switch automatically.
After the signal is removed, the user needs to press any
key to exit the fire control linkage state and resume the
normal state of operation.
The controller will not switch on and connect to the failed
power supply either manually or automatically when it
identifies the failure of normal power supply or alternative
power supply, unless it is switched on with the handle.
The undervoltage switching value and recovery value of
the controller have +10V return difference, and the
overvoltage switching value and recovery value have -10V
return difference, so the power supply recovery value must
exceed the switching value plus the return difference.
Figure 18 Inter-phase flash barrier
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