OPERATION MANUAL
Wattmeter
DTS634/DTS636
IMPORTANT NOTE
Thank you very much for purchasing our product. Before using your unit, please read this manual
carefully and keep it for future reference.
Control System
Control System
Digital ammeter DTS634/DT636
The digital ammeter DTS634/DT636 is a device to calculate the power consumption of the outdoor unit and
transmit the information when it is required.
Steadily functioning and needs no adjusting.
Be with great precision.
Works in wide working temperature, from -35 ℃ to +55℃.
Be able to be built inside the outdoor units in our factory.
Digital ammeter wiring
The ammeter has two kinds of ports. One is the power port used to calculate the current flow through it. The
other is the signal port O, A, E used to send the signals to the other device. Both of these two kinds of port
should be connected and fastened before use.
1) Three-phase four-wire system with current transformer
1 2 3 4 5 6 7 8 9 10 11
A
B
C
N
2) Three-phase three-wire system with current transformer
1 2 3
4
5 6 7
A
B
C
3) Three-phase four-wire system
1 2 3 4 5 6 7 8 9 10
A
B
C
N
Control System
Control
System
4) Three-phase three-wire system with current transformer and voltage transformer
1 2 3
4
5 6
7
A
B
C
Installation
Notes: The ammeter device is an optional device. Without this device, the central AC system is also able to
work normally.
If users want to realize the network fee calculating function, this device is necessary. And each
outdoor unit
should equip one ammeter. Do remember to fix the power line terminals and the signal line terminals before
use.
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