Energy Meter Installation - Midea CCM-270A/WS Service Manual

1

1.15 Energy Meter Installation

To use the "ECS" function of the CCM-270A/WS, the energy meter should be connected to the outdoor units to monitor
the energy consumed by the outdoor units which can be sent to the software and hence it can be used by the software to
calculate the energy consumed by various tenants.
Two models of energy meter are available from Midea, which are listed as follows:
Model Current
DTS 634/636 Up to 60 A
DTS634-F Up to 100 A
1.15.1 Wiring Instructions
At present there are two kinds of energy meter wiring schemes in engineering:
1. A refrigerant system can be connected to three-phase digital power meter of low current only used by Midea (can
connect to the external current transformer). The external current transformer power meter can be installed directly
on the power of the air conditioner system bus, implement a refrigerant system with one meter.
Code
DTS634-M
BH-0.66-30IB
2. An outdoor unit connects to three-phase digital power meter of large current, at present there are two kinds of
meter in using, details are as follows:
Code
DTS634-F
DTS634/DTS636
3. The wiring between current transformer and power meter
The power meter installed is DTS634-M. In the wiring diagram, the 1, 4 and 7 ports of the power meter need to connect to
current transformer's S1 terminal; the 3, 6 and 9 ports of the power meter need to connect to current transformer's S2
terminal. The 2, 5 and 8 ports of the power meter need to connect to three-phase power supply. The 10 and 11 ports of
the power meter need to connect to ground. In sure to safety，it's necessary to connect current transformer's S2
terminal before connecting the ground.
201807
Name
three-phase digital
(380V,50Hz,6A)(CHINT)(RoHS)
current transformer (150A/5A)
Name
three-phase digital
(380V,50Hz,100A)(RoHS)
three-phase digital power (60A)(RoHS)
Overload current
power
180A
Overload current
power meter
180A
60A
CCM-270A/WS
41