Huawei DDSU666-H Bedienungsanleitung
1
Issue: 01
Date: 2018-05-18
DDSU666-H Smart Power Sensor
Quick Guide
Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
DDSU666-H
Model Naming Conventions
Port Definition
1Overview
Voltage Input: 230 V; CT Current Input: 40 mA
Current Transformer(CT): 100 A/40 mA
2
2Installing the DDSU666-H
Install the instrument to
the standard din rail
from the top to the
bottom, and then push
the instrument to the
din rail from the bottom
to the front part.
Install the instrument on
the standard din rail of
DIN35mm.
3Installing the DDSU666-H Cable
Prepare cables
Cable DDSU666-H Type Conductor Cross-
sectional Area
Range
Outer
Diameter Source
AC power
cable L-3 Two-core (L
and N)
outdoor
copper cable
4-6 mm210-21 mm
Prepared by
the customer
N-4
CT cable I*-5 N/A N/A N/A Manufact-
urer
I-6 N/A N/A N/A
Comm. cable RS485A-24 Two-core
outdoor
shielded
twisted pair
0.25-1 mm24-11 mm Manufact-
urer
RS485B-25
3
Connecting Diagram
1. Connect the L,N voltage lines to the 3, 4 terminals of the collector.
2. Connect current transformer outlets I*, I to terminals 5, 6 of the collector.
3. Connect RS485A and RS485B to the communication host.
4
4User Interface
Display (Auto loop)
No. Display interface Description No. Display interface Descriptio
n
1Imp. active
energy=1.2kWh 2Exp. active
energy=1.0
0kWh
3active
power=1.1kW 4Voltage
=220.0V
5Current
=5.000A 6Freq.=50.00
Hz
No. Display interface Description No. Display interface Description
1Comb. active
energy=0.20k
Wh 2Imp. active
energy=1.2k
Wh
3Exp. active
energy=1.00k
Wh 4
None parity,
1 stop bit,
baud=9600b
ps
5Comm.Add =
11 6Voltage=220
.0V
7Current
=5.000A 8active
power=1.1k
W
9Power Factor
=1.000 10 Freq.=50.00
Hz
Display (Change By Key “ ”)
Auto loop Switch time = 5s.
Comb. active energy = Imp. active energy-Exp. active energy
5
Setup
The Power Sensor can set up the communicationaddress and the baud rate through the key :
Long press the button 3s, The Power Sensor automatically enters into the setting interface of
communication address, while the setting & display interface of baud rate and communication
address circularly displays. Please press the button once required settings for baud rate or
communication address, and it will exit the communication address and baud rate without button
operation for twenty seconds.
6
5Troubleshooting
Fault phenomenon Factor analysis Elimination method
No display after the
instrument being
powered on
1. Incorrect wiring mode;
2. Abnormal voltage supplied for
the instrument;
1. If the wiring mode is incorrect,
please connect based on the
correct wiring mode (see the
wiring diagram).
2. If the supplied voltage is
abnormal, please supply the
voltage on the instrument
specification.
Abnormal RS485
communication
1. The RS485 communication
cable is disconnected, short
circuit or reversely connected.
2. The address, baud rate, data
bit and parity bit of the
instrument is not in accordance
with the host computer;
1. If any problems for the
communication cable, please
change the cable.
2. Set the address, baud rate,
data bit and parity bit of the
instrument to be the same as
the host computer through
buttons and so as the
“parameter setting”.
Power metering
inaccuracy
1. Wrong wiring, please check
whether the corresponding
phase sequence of voltage
and current is correct.
2. Check whether the high & low
end of current transformer inlet
is reversely connected. Please
observe the power, to be
abnormal if any negative
values.
For wrong wiring, please connect
based on the correct wiring mode
(see Connecting Diagram).
1. Check that all mounting brackets are securely installed and all screws are tightened.
2. Check that all cables are reliably connected with correct polarity and no short circuit.
For details, see the other description.
6Verifying the Installation
7Powering On the System
7
Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang
Shenzhen 518129 People's Republic of China
www.huawei.com
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