DRT-370D user manual
Shanghai Fengyilong Electronic Co. Ltd.
www.china-meters.com
-7-
Email:[email protected]
m
021-60975591/ 60975592
Protection Devices
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After finishing installation, the meter must be sealed to prevent tampering.
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Connection of the wires should be done in accordance with the underneath
connection diagram.
L1
L1 phase wire
L2
L2 phase wire
L3
L3 phase wire
N
Neutral wire
20 and 21 Pulse output contact
1.9 Operating
Working indication
On the DRT-370D’s front panel, there are three power indicating LED which have
different color from each other. The yellow LED represent L1 phase; the green LED
represent L2 phase; the red LED represent L3 phase. When any phases work normally,
the LED representation will burn. When any phases have failure or no power, the LED
will turn off.
Consumption indication
There is a PULSE LED which is used as indicating power consumption in the front panel
of DRT-370D When consumption happens, the LED will flash. The more quickly LED
flash, the more consumption there is. For this LED, the flash rate is 400 impulses per
kWh (2.5Wh/imp).
Reverse indication
There is REV. LED on DRT-370D front plate. When meter load current flow is reverse,
the LED lighten.
Reading the meter
The DRT-370D energy meter is equipped with a 5+2 LCD display which is used as
recording consumption and can’t be reset to zero. The number system is based on units
of 10.And unit is kWh.
