Huawei DTSU666-HW Manuel utilisateur

DTSU666-HW Smart Power Sensor

Quick Guide

ZTY0.464.1516

Issue: 07

Date: 2022-04-27

1Overview

Specifications on the front panel

DTSU666-HW

The dimensional tolerance is ±1 mm.

Nameplate

Dimensions

Appearance

1.2

1.1

72 mm 80 mm

62 mm

101 mm

45 mm

35 mm

Installation

position

Category DTSU666-HW

Nominal voltage 230 V AC/400 V AC, 50 Hz/60 Hz

Current measurement range Direct connection: 0–80 A

Connection through current transformers: > 80 A

Voltage measurement range 90–1000 V (line voltage; potential transformers are required

if the voltage is greater than 500 V)

Electricity metering accuracy Class 1 (error within ±1%)

Power grid system Three-phase four-wire or three-phase three-wire

Baud rate 4800/9600/19200/115200 bps (default value: 9600 bps)

Operating temperature –25℃to +60℃

Installation mode Guide rail-mounted

Certification CE, RCM, and UKCA

Key Specifications

1.3

•Input voltage: When the line voltage is less than or equal to 500 V, connect the meter

directly. When the line voltage is greater than 500 V, connect the meter through potential

transformers.

•Input current: When the input current is 0 A to 80 A, connect the meter directly (channel 1).

When the input current is greater than or equal to 80 A, connect the meter through current

transformers (channel 2).

Port Definition

1.4

Cable Inlet Cable Outlet

1.4

2Installing 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 mm210 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 mm25–10 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 mm23–5 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

mm24–11 mm

Supplied by

the

manufacturer

RS485B-25

3Installing 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.

Each phase of UA, UB, and UC in the

Smart Power Sensor is connected with

a fuse and a thermistor to prevent

damage caused by external short

circuits. UA, UB, and UC do not need

external fuse protection.

Current ≤ 80 A > 80 A ≥ 0 A

Line voltage ≤ 500 V > 500 V

Connection

mode

Current and voltage

direct connection

Connection through

current transformers and

voltage direct connection

Connection through current

transformers and p

otential

transformers

Connection

setting

Direct connection:

SPEC = 1 (default)

Connection through transformers:

SPEC = 0

Current

transformation

ratio

CT = 1

(default)

CT = Ratio of the installed

current transformer

Potential

transformation

ratio

PT = 1.0

(default)

PT = Ratio of

the installed

potential transformer

Wiring

mode

3P4W:

net = n.34

(default)

3P3W:

net = n.33

3P4W:

net = n.34

(default)

3P3W:

net = n.33

3P4W:

net = n.34

(default)

3P3W:

net = n.33

3.2 Wiring Scenarios

You need to set parameters after cable connections are complete. For details, see section 4

"Display and Parameter Settings".

Current and Voltage Direct Connection (Current ≤ 80 A and Line

Voltage ≤ 500 V)

3.3

•Three-phase four-wire

connection

•Three-phase three-wire connection

(1) Shield layer of the signal cable

You need to set parameters after

cable connections are complete.

For details, see section 4 "Display

and Parameter Settings".

SmartLogger networking

In the SmartLogger

networking scenario, the

power meter is connected to

the SmartLogger. In the non-

SmartLogger networking

scenario, the power meter is

connected to the inverter.

•Three-phase four-wire connection

•Three-phase three-wire connection

(1) Shield layer of the signal cable

You need to set parameters after

cable connections are complete. For

details, see section 4 "Display and

Parameter Settings".

Smart Dongle networking

Please ensure that the

ground cable is installed

securely. Poor grounding

may cause electric shocks.

Connection Through Current Transformer and Voltage Direct

Connection (Current > 80 A, Line Voltage ≤ 500 V)

3.4

•You need to set

parameters after

cable connections

are complete. For

details, see section 4

"Display and

Parameter Settings".

•For the three-phase

three-wire

connection, phase B

does not need to

connect to a current

transformer.

Current transformers specifications: The accuracy class is 0.5, and the current on the secondary

side is 1 A or 5 A.

•Three-phase four-wire

connection

•Three-phase three-wire connection

(1) Shield layer of the signal cable

SmartLogger networking

In the SmartLogger

networking scenario, the

power meter is connected to

the SmartLogger. In the non-

SmartLogger networking

scenario, the power meter is

connected to the inverter.

Please ensure that the

ground cable is installed

securely. Poor grounding

may cause electric shocks.

•You need to set

parameters after cable

connections are

complete. For details, see

section 4 "Display and

Parameter Settings".

•For the three-phase

three-wire connection,

phase B does not need to

connect to a current

transformer.

•Three-phase four-wire connection

•Three-phase three-wire connection

(1) Shield layer of the signal cable

Smart Dongle networking

3.4 Connection Through Current Transformer and Potential

Transformer (Current ≥ 0 A, Line Voltage > 500 V)

3.5

Please ensure that the

ground cable is installed

securely. Poor grounding

may cause electric shocks.

Cable outlet (OUT)

•Three-phase four-wire connection

Cable outlet (OUT)

Current

transformers

Cable inlet (IN)

UA UB UC UN

Cable inlet (IN)

UA UB UC

You need to set parameters

after cable connections are

complete. For details, see

section 4 "Display and

Parameter Settings".

Current

transformers

•Three-phase three-wire connection

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