4
direction of current.
2.5 Wiring
Check the wiring methods of the single - phase energy meter:
Load on the field
Connect the energy meter "live" wire on the instrument side to the instrument’s U + port, and
connect the "zero" line to the instrument’s U - port; connect the clamp meter line to the
instrument’s "clamp meter" port; connect the pulse input device to the instrument’s "pulse" port.
1. When the instrument voltage is from the live wire inlet, the clamp meter should be
connected to the live wire outlet; otherwise it will affect the accuracy of calibration error;
2. When the instrument voltage is from the live wire outlet, the clamp meter should be
connected to the live wire inlet; otherwise it will affect the accuracy of calibration error.
2.6 Main screen
Field settings:
Constant
refers to the measured energy meter’s constant;
N:
refers to error calculation at a time by the instrument within how many times of pulses.
Specifically, as for a mechanical energy meter, it is error calculation at a time by black meter for
how many times.
(It is noteworthy that in manual mode, the manual switch is pressed once for how many times of
black meter);
Photoelectric (manual)
: pulse sampling way; (note: photoelectric head and pulse line are in the
photoelectric sampling mode)
Input
: refers to current sampling way (there is a need to input the numerical value of
transformation ratio and input the transformation ratio; if it is a straight meter, the transformation
