DTM840B three-phase power measuring instrument

DTM840B three-phase electric quantity measurement and control instrument is a simple and reliable measurement and control device with data acquisition and control functions. It can be widely used in power systems, intelligent buildings, monitoring systems, low-voltage power distribution and other automation fields. This product is suitable for low pressure and high pressure systems. Provides a large LCD display and a full range of measurement functions, such as voltage, current, active power, reactive power, power factor, frequency, active power, reactive power and other electrical parameters, which can fully meet low-voltage or high-voltage three-phase power networks The requirements of electrical monitoring. It also has strong extended functions, such as four-way switch input to monitor switch status, four-way relay alarm output to control switch action, and network management of the instrument through RS485/MODBUS communication. Users can conveniently program the relay output to r

1. Product features

 Suitable for three-phase AC electric Parameter measurement of 35KVthe following voltage level

 Power supply is AC-DC dual-purpose switch Power supply, which has a wide application range

 Large-screen LCD display data, data display in turn or designated display optional

 A variety of functions are available to meet different needs

 Three-way AC/DC dual-purpose active Switch input

 Four programmable relay alarm output

 Three-way temperature and one-way leakage measurement

 Extended power demand analysis function

 Rail installation mode is optional

 The current ratio is set on site, no ordering instructions are required


2. Product advantages

 Professional independent design, complete functions

 First-class quality of industrial-grade devices

 Classic structure design, strong scalability;


3. Technical Parameters

Parameter

Index

Accuracy class

Voltage and current

0.5 level

Electricity and power

0.5 level

Applicable system

Low pressure system

400Vthe following(Three-phase Y-shaped and three-phase △-shaped)

High pressure system

400V以上(Three-phase Y-shaped and three-phase △-shaped)

Display Data

Current

Rated current input 1A or 5A, continuous 1.4 times, instant current 10 times/1 second

Voltage

Rated voltage input 100V or 220V, continuous 1.2 times, voltage 2 times/1 second

Extensions

Switch

AC220V ± 25% or DC 220V ± 25%

Relay output

AC 220V/5A, DC 30V/5A

Power supply

Wide pressure type

AC85V ~ 265V;DC80V ~ 300V

Power consumption

Less than2VA

Insulation Parameters

Dielectric strength

2KV(Test voltage is AC effective value))

Insulation resistance

≥ 50MΩ

Electromagnetic characteristics

Static immunity test

IEC 61000-4-2,Level 3

Radiation immunity test

IEC 61000-4-3,Level 3

Immunity test of electrical fast transient pulse group

IEC 61000-4-4,Level 3

Surge immunity test

IEC 61000-4-5,Level 3

Conducted radio frequency interference test

EN 55022,Class B

Radiated radio frequency interference test

EN 55022,Class B

Working conditions

Ambient temperature

-20℃~+70℃

Storage temperature

-30℃~+80℃

Relative humidity

Relative humidity:5%~95%,No condensation

Shape size

131mm*95mm

Install size

161mm*125mm

 

Shape and installation size




1. Product features

 Suitable for three-phase AC electric Parameter measurement of 35KVthe following voltage level

 Power supply is AC-DC dual-purpose switch Power supply, which has a wide application range

 Large-screen LCD display data, data display in turn or designated display optional

 A variety of functions are available to meet different needs

 Three-way AC/DC dual-purpose active Switch input

 Four programmable relay alarm output

 Three-way temperature and one-way leakage measurement

 Extended power demand analysis function

 Rail installation mode is optional

 The current ratio is set on site, no ordering instructions are required


2. Product advantages

 Professional independent design, complete functions

 First-class quality of industrial-grade devices

 Classic structure design, strong scalability;


3. Technical Parameters

Parameter

Index

Accuracy class

Voltage and current

0.5 level

Electricity and power

0.5 level

Applicable system

Low pressure system

400Vthe following(Three-phase Y-shaped and three-phase △-shaped)

High pressure system

400V以上(Three-phase Y-shaped and three-phase △-shaped)

Display Data

Current

Rated current input 1A or 5A, continuous 1.4 times, instant current 10 times/1 second

Voltage

Rated voltage input 100V or 220V, continuous 1.2 times, voltage 2 times/1 second

Extensions

Switch

AC220V ± 25% or DC 220V ± 25%

Relay output

AC 220V/5A, DC 30V/5A

Power supply

Wide pressure type

AC85V ~ 265V;DC80V ~ 300V

Power consumption

Less than2VA

Insulation Parameters

Dielectric strength

2KV(Test voltage is AC effective value))

Insulation resistance

≥ 50MΩ

Electromagnetic characteristics

Static immunity test

IEC 61000-4-2,Level 3

Radiation immunity test

IEC 61000-4-3,Level 3

Immunity test of electrical fast transient pulse group

IEC 61000-4-4,Level 3

Surge immunity test

IEC 61000-4-5,Level 3

Conducted radio frequency interference test

EN 55022,Class B

Radiated radio frequency interference test

EN 55022,Class B

Working conditions

Ambient temperature

-20℃~+70℃

Storage temperature

-30℃~+80℃

Relative humidity

Relative humidity:5%~95%,No condensation

Shape size

131mm*95mm

Install size

161mm*125mm

 

Shape and installation size




Product application market
It is widely used to monitor the working power of fire-fighting electrical equipment in the fields of ships, agencies, chemicals, mines, schools, commercial buildings, factory workshops, bazaars, banks, and civil buildings.