11
Power Supply
AcuDC 240 series meter power supply is 100-240Vac(50/60Hz) or
100-300Vdc,which is universally supported. Please contact us for
other voltage options. The meter's typical power consumption is
very low and can be supplied by an independent source or by the
measured load line. A regulator or an uninterrupted power supply
(UPS) should be used under high power fluctuation conditions.
The power supply terminals are 11, 12, 13(L, N, G).
Figure 2-8 Power Supply Wiring
The independent power supply circuit loop must have a fuse or air circuit breaker. The fuse
could be 1A/250Vac, time delay type. If circuit breaker is used, a CE certified product with
compliance of IEC947 is recommended.
Terminal G (13) must be connected to the ground for safety purposes.
An isolated transformer or EMC flter should be used in the auxiliary power supply loop if
there is a power quality problem in the power supply.
Alert
Make sure the power sup-
ply meets the standard of
the power supply voltage
on the meter's nameplate.
1A FUSE
Power Supply
L /+
N/-
AcuDC 240
13
12
11
G
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