Huawei DTSU666-H User manual

DTSU666-H and DTSU666-H 250 A/50mA Smart
Power Sensor
Quick Guide
HUAWEI TECHNOLOGIES CO., LTD.
Issue: 03
Date: 2019-09-29

1Copyright © Huawei Technologies Co., Ltd. 2019. All
rights reserved.
1Overview
Differences between DTSU666-H and DTSU666-H 250 A/50 mA:
•Parameters on the panel
DTSU666-H DTSU666-H 250 A/50 mA
Appearance
Models
Smart Power Sensor dimensions
250 A CT dimensions
100 A CT dimensions
•DTSU666-H: with three 100 A/40 mA CT
•DTSU666-H 250 A/50 mA: with three 250 A/50 mA CT

2
Voltage Input: 3×230/400 V or 3×400 V
Current Transformer(CT): 100 A/40 mA or 250 A/50 mA;
Category DTSU666-H DTSU666-H 250 A/50 mA
Nominal voltage 230 V AC / 400 V AC 230 V AC / 400 V AC
Current Measurement range 0–100 A 0–250 A
Power grid system 3P4W 3P4W or 3P3W
•Nameplate
DTSU666-H DTSU666-H 250 A/50 mA
Appearance
Performance and Specification
Port Definition

3
2Installing the DTSU666-H and DTSU666-H 250 A/50 mA
3Installing the Cable
1. Install the smart power
sensor on the standard
din rail of DIN35mm
2. Install the Smart Power
Sensor 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.
Cable Port Type
Conductor
Cross-
sectional Area
Range
Outer
Diameter Source
AC power
cable
Ua-3 Four-core
outdoor
copper
cable
4-6 mm210-21
mm Prepared by the customer
Ub-6
Uc-9
Un-10
CT cable
IA*-13 / / /
Manufacturer
IA-14 / / /
IB*-16 / / /
IB-17 / / /
IC*-19 / / /
IC-21 / / /
Comm.
cable RS485A-24 Two-core
outdoor
shielded
twisted pair
0.25-1 mm24-11 mm Manufacturer
RS485B-25
Prepare cables

4
1. Three phase four wire:
Connect the Ua, Ub, Uc,
Un voltage lines to the 3, 6,
9 and 10 terminals of the
collector. Connect current
transformer outlets IA*, IA,
IB*, IB, IC*, IC to terminals
13, 14, 16, 17, 19, 21 of
the collector.
2. Connect RS485A and
RS485B to the
communication host.
Wiring Diagram--Three Phase Four Wire
1. Three phase three wire：
Connect the Ua, Uc, Ub
voltage lines to the 3, 9 and
10 terminals of the
collector. Connect current
transformer outlets IA*, IA,
IB*, IB, IC*, IC to terminals
13, 14, 16, 17, 19, 21 of the
collector.
2. Connect RS485A and
RS485B to the
communication host.
Wiring Diagram--Three Phase Three Wire
Support model:
•DTSU666-H
•DTSU666-H 250 A/50 mA
Support model:
•DTSU666-H 250 A/50 mA
Operating voltage: 0.7–1.3 Un
Operating voltage: 0.7–1.3 Un
NOTE
A fuse and a thermistor are
connected to each phase of Ua,
Ub, and Uc inside the power
meter to prevent damage caused
by external short circuits. Ua, Ub,
and Uc do not need to be
protected by external fuses.
NOTE
The CT direction must be consistent with the arrow direction as
shown in the preceding figure.
NOTE
The CT direction must be consistent with the arrow direction as
shown in the preceding figure.

5
Display (Auto loop)
No. Display interface Description No. Display interface Description
1Imp. active
energy =
10000.0 kWh 2Exp. active
energy
= 2345.67 kWh
3Active power
= 3.291 kW 4Phase A
voltage
= 220.0 V
5Phase B voltage
= 220.1 V 6Phase C
voltage
= 220.20 V
7Phase A current
= 5.000 A 8Phase B
current
= 5.001 A
9Phase C current
= 5.002 A 10 Frequency freq = 50.00 Hz
4User Interface
If no button is pressed for 60 seconds, the backlight turns off. Auto loop Switch time = 5s.

6
No. Display interface Description No. Display interface Description
1Comb. active
energy
= 7654.33 kWh 2Imp. active
energy
= 10000.0 kWh
3Exp. active
energy
= 2345.67 kWh 4
None parity,
1 stop bit,
Baud = 9600
bps
5
001 represents
address 6Phase A
voltage
= 220.0 V
7Phase B
voltage
= 220.1 V 8Phase C
voltage
= 220.20 V
9Phase A
current
= 5.000 A 10 Phase B
current
= 5.001 A
11 Phase C
current
= 5.002 A 12 Phase active
power = 3.291
kW
13
Phase A active
power = 1.090
kW 14
Phase B active
power = 1.101
kW
15
Phase C active
power
= 1.100 kW 16 Power factor
PFt = 0.500 L
17
Phase A power
factor
Pfa = 1.000 L 18
Phase B power
factor PFb =
0.500 L
19
Phase C power
factor PFc =
0.500 C 20 Frequency freq
= 50.00 Hz
Comb. active energy = Imp. active energy - Exp. active energy
Display (Change by key " ")

7
Parameter
Parameter Value range Description
1: 645;
2: n.2;
3: n.1;
4: E.1;
5: O.1;
Settings for communication stop bit and
Parity bits:
1: Factory mode;
2: None parity, 2 stop bits, n.2;
3: None parity, 1 stop bit, n.1;
4: Even parity, 1 stop bit, E.1;
5: Odd parity, 1 stop bit, O.1;
0: 4.800;
1: 9.600;
Communication baud rate:
0: 4800 bps;
1: 9600 bps;
11–19 Communication address
(Optional)Parameter Setup
Button description: "SET" represents "confirm" or "cursor shift" (when entering digits), "ESC"
represents "exit", and "→" represents "add". The password is 701 by default.
NOTE
Communications parameters have been configured for the power meter before delivery. If the
communication is abnormal, check and set the parameters.

8
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 DTSU666-H and DTSU666-H 250 A (50 mA) Smart Power Sensor User Manual.
6Verifying the Installation
7Powering On the System
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 inverter.
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
inverter 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 and
low ends of the current
transformer inlet are reversely
connected. Pa, Pb, and Pc are
abnormal if the values are
negative.
1. For wrong wiring, please
connect based on the correct
wiring mode (see the wiring
diagram).
2. If a negative value is
displayed, change the cable
connection mode of the current
transformer to ensure that the
high and low ends are
connected properly.

9
Customer Service Contact
Region
Country
Service Support Email
Phone
Europe
France
[e-mail]
0080033888888
Germany
Spain
Italy
UK
Netherlands
Other countries
For details, see
solar.huawei.com.
Asia
Pacific
Australia
[e-mail]
1800046639
Turkey
[e-mail]
-
Malaysia
[e-mail]
0080021686868
/1800220036
Thailand
([phone] (charged by
local call)
1800290055 (free in Thailand)
China
[e-mail]
4008229999
Other countries
[e-mail]
0060
-3-21686868
Japan
Japan
[email protected]
0120258367
India
India
[e-mail]
1800 103 8009
South
Korea
South Korea
[email protected]
-
North
America
USA
[e-mail]
1
-877-948-2934
Canada
[e-mail]
1
-855-482-9343
Latin
America
Mexico
la_inverter_[email protected]
018007703456
/0052
-442-4288288
Argentina
0
-8009993456
Brazil
0
-8005953456
Chile
800201866 (only for fixed)
Other countries
0052
-442-4288288
Middle
East and
Africa
Egypt
mea_inverter_suppor[email protected]
08002229000
/0020235353900
UAE
08002229000
South Africa
0800222900
Saudi Arabia
8001161177
Pakistan
0092512800019
Morocco
0800009900
Other countries
0020235353900
8Customer Service Contact

Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang,
Shenzhen 518129, People's Republic of China
solar.huawei.com