Maxsel Dtsu666-hw Smart Power Sensor User Guide

maxsel DTSU666-HW Smart Power Sensor

Overview

Dimensions

DTSU666-HW

Note: The dimensional tolerance is ± 1 mm.

Appearance

Specifications on the front panel

Nameplate

Key Specifications

Port Definition

• 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).

                                                                                            Cable Inlet                 Cable Outlet

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.

Installing Cables

Preparing Cables

Note: 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.

Note:  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.

Wiring Scenarios

Note: 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 3.3 Voltage ≤ 500 V)

Smart Logger networking

• Three-phase four-wire connection
  Note: 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.
  1. Shield layer of the signal cable
• Three-phase three-wire connection
  1. Shield layer of the signal cable

Smart Dongle networking

• Three-phase four-wire connection
  1. Shield layer of the signal cable
• Three-phase three-wire connection
  1. Shield layer of the signal cable

Note: You need to set parameters after cable connections are complete. For details, see section 4 “Display and Parameter Settings”.

Connection Through Current Transformer and Voltage Direct Connection (Current > 80 A, Line Voltage ≤ 500 V)

Current transformers specifications: The accuracy class is 0.5, and the current on the secondary side is 1 A or 5 A.

SmartLogger networking

• Three-phase four-wire connection
  Note: 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.
  1.  Shield layer of the signal cable
     
• Three-phase three-wire connection
  

Caution: Please ensure that the ground cable is installed securely. Poor grounding may cause electric shocks.

Note:

• 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.

Smart Dongle networking

• Three-phase four-wire connection
  1. Shield layer of the signal cable
     
• Three-phase three-wire connection
  Caution: Please ensure that the ground cable is installed securely. Poor grounding may cause electric shocks.
  Note:
•  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.
  
  1. Shield layer of the signal cable

Connection Through Current Transformer and Potential
Transformer (Current ≥ 0 A, Line Voltage > 500 V)

• Three-phase four-wire connection
• Three-phase three-wire connection

Caution:  Please ensure that the ground cable is installed securely. Poor grounding may cause electric shocks.

Note: You need to set parameters after cable connections are complete. For details, see section 4 “Display and Parameter Settings”.

Display and Parameter Settings

Display

The button → is used to switch the displays. Set parameter disp to enable the rotation display function.

No.	Display	Description	No.	Display	Description
1		Positive active energy = 10000.00 kWh	2		Negative active energy = 2345.67 kWh
3		None parity, 8 data bits, and 1 stop bit; baud rate = 9600 bps (default)	4		011 represents address (default)
5		Phase A voltage = 220.0 V	6		Phase B voltage = 220.1 V
7		Phase C voltage = 220.2 V	8		Phase A current = 5.000 A
9		Phase B current = 5.001 A	10		Phase C current = 5.002 A
11		Total phase active power = 3.291 kW	12		Phase A active power = 1.090 kW
13		Phase B active power = 1.101 kW	14		Phase C active power = 1.100 kW
15		Total phase power factor PFt = 0.500	16		Phase A power factor PFa = 1.000
17		Phase B power factor PFb = 0.500	18		Phase C power factor PFc = –0.500

Parameter Settings

No.	Parameter	Value Range	Description
1		1–6553	Current transformer ratio
2		0.1–999.9	Potential transformer ratio
3		1: 645 2: n.2 3: n.1 4: E.1 5: 0.1	Communication protocol switchover: 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, 0.1
4		1–247	Modbus communication address
5		0: 1.200 1: 2.400 2: 4.800 3: 9.600 4: 19.20 5: 115.2	Communication baud rate: 0: 1200 bps 2400 bps 4800 bps 9600 bps 19200 bps 115200 bps
6		0: n.34 1: n.33	Wiring mode: 0: n.34, three-phase four-wire 1: n.33, three-phase three-wire
7		0–30	Rotation display time (s): 0: Fixed display 1–30: Time interval of rotation display
8		0–30	Backlight illumination time control (minutes): 0: Steady on 1–30: Time of backlight illumination without key operation
9		0: ct 1: dc	Channel switchover: 0: Transformer connection 1: Direct connection

Parameter Setting Operations

Button description: SET means “confirm” or “cursor move” (when inputting numbers or parameters), ESC means “exit”, and → means “add”. The default user password is 701.

• Set wiring mode (three-phase four-wire or three-phase three-wire) and channel switchover (direct connection or current transformer connection):
• Set the current transformation ratio or potential transformation ratio:
• Set communication address or baud rate:

Note:The communication parameters are set for the Smart Power Sensor before delivery. If the communication is abnormal, check and set the parameters.

• Modify user password:

Troubleshooting

Installation Verification

1. Check that all mounting brackets are securely installed and all screws are tightened.
2. Check that all cables are reliably connected in correct polarity without short circuit.

Customer Service Contact

References

• Huawei - Building a Fully Connected, Intelligent World
• Homepage - FusionSolar Global