Huawei DTSU666-HW - 2 Installing the DTSU666-HW

1.4
2
Installing the DTSU666-HW
1. Install the Smart Power
Sensor on the standard
guide rail of DIN35mm.
2. Press the Smart Power
Sensor downwards onto
the guide rail, and then
push it in place along
the guide rail.
Cable Port Type
Conductor
Cross-
sectional
Area Range
Outer
Diameter
Source
Channel 1
voltage
cable
UA-1 and 3
Single-core
outdoor copper
cable
25 mm
2
10 mm
Prepared by
the customer
UB-4 and 6
UC-7 and 9
UN-10 and 12
Channel 2
voltage
cable
UA-1
Single-core
outdoor copper
cable
4–25 mm
2
5–10 mm
Prepared by
the customer
UB-4
UC-7
UN-10
Channel 2
current
transformer
cable
IA*-31
Single-core
outdoor copper
cable
2–4 mm
2
3–5 mm
Prepared by
the customer
or supplied
with current
transformers
IA-33
IB*-34
IB-36
IC*-37
IC-39
Communications
cable
RS485A-24 Two-core
outdoor
shielded twisted
pair copper cable
0.25–1.5
mm
2
4–11 mm
Supplied by
the
manufacturer
RS485B-25
3
Installing Cables
3.1
Preparing Cables
The maximum torque of 1, 3, 4, 6, 7, 9, 10, and 12 terminal screws is 1.7 N·m, and the
recommended torque is 0.9–1.1 N·m. The maximum torque of 31, 33, 34, 36, 37, 39, 24,
and 25 terminal screws is 0.4 N·m, and the recommended torque is 0.15 – 0.25 N·m.
3