Epever MSC-N Series, Руководство пользователя

Страница: 27 / 44

23
Note: Disconnect the system in the reverse order. Namely, disconnect the
system in the order of
④
PV array --
③
battery --
②
load 2--
①
load 1.
CAUTION
 When wiring the controller, please do not connect the circuit
breaker or fuse and ensure that the electrode polarity is correctly
connected.
 A fuse whose current is 1.25 to 2 times the rated current of the
controller must be installed on the battery side with a distance from
the battery no longer than 150 mm.
 Suppose the controller is to be used in frequent lightning strikes
or unsupervised areas. In that case, an external surge arrester
must be installed on the input side of the PV array.
 Suppose an inverter is to be connected to the system. In that case,
you must connect the inverter directly to the battery, not to the load
side of the controller.
Step 3
：
Grounding
MSC-N series are common-negative controllers; all the negative terminals can be
grounded simultaneously, or anyone is grounded. However, according to the
practical application, the negative terminals of the PV array, battery, and load can
also be ungrounded. Still, the grounding terminal on the shell must be grounded. It
effectively shields the electromagnetic interference from the outside and prevents
some electric shock to the human body.
3 4