Standard: DL/T721 - 2000

Accuracy class

Voltage and current

Class 0.2

Power

Class 0.5

Active electrical degree

Class 1

Input voltage characteristic

Range

3×220V/380V(Directly),

3×57.7V/100V(connect by CT)

Impedance

2MΩ (L-L), 1MΩ (L-N)

Allowed overload capacity

1.2 times/ continuous

Input current characteristic

Range:

1A, 5A (optional)

Impedance:

＜0.1Ω

Allowed overload capacity:

1.2 times/ continuous, 10 times/1 second

Contact capacity of relay

220VAC/5A, 30VDC/5A

Communications interface

RS485, baudrate optional, Max. 19200bps

Communication protocol

MODBUS RTU

Electromagnetic compatibility

Conforms to Class IECⅢ

Insulation resistance

＞50MΩ

Power frequency withstand voltage

AC2kV/1min

Whole power

＜5VA

Power supply

90 to 260VAC/DC

Working temperature

-20℃ ~ +70 ℃

Dimensions

96x96x72 (mm),

96x96x120(mm)(with expanding module)

Weight

0.5 kg

Parameter Measurement

Power Quality

Current / Voltage

Active/Reactive/Apparent Power

Power Factor / Frequency

Phase and Neutral Line

Wire Line and Phase Line

3 Phases and Single Phase

3 Phases and Single Phase

Harmonic Distortion / 31 times Harmonic Analysis

Current and Voltage / Current and Voltage

Communication Protocol

RS485/MODBUS

Display

STN LCD Display with big screen / Real-Time Clock

Year/Month/ Day/Hour/Minute/Second

Energy Measurement

Others

Input/Output Active Energy

Input/Output Reactive Energy

Apparent Energy

1 Channel Pulse Output

1 Channel Pulse Output

Update on-line

Remote Communication Input Module

8 Channels Remote Communication Input

Resolution of State Variable Time: up to 1 ms

100 SOE Events Log

Demand Statistics

Relay Output Module

Current

Active/Reactive/Apparent Power

Current Value and Max.

Current Value and Max.

4 Channels Relay Output

Programmable Alarm Setting of exceeding the limit

Remote Control

Restoration Rate

Analog Input and Output Module

8 Restoration Stages;

4 Restoration Rate can be set

1 Channel Analog Input Measurement for 4-20mA DC

1 Channel Analog Input Measurement for 0-5V DC

2 Channels Analog Output for 4-20mA DC

Maximum and Minimum

Record the maximum, minimum and

time of all measurement parameters

Communication Module

a) RS232 Communication Module

b) Profibus-DP Communication Module

c) TCP/IP Ethernet Expansion Module

Event Log

100 SOE Events Log / Time Resolution: up to 1 ms