Home > DTM730 Three-phase Power Monitoring
DTM730 series with high performance to price, can directly replace conventional power transmitter and measuring instrument. As an advanced intelligent, digital front-end acquisition components, DTM730 series power parameter measurement instrument has been widely used in various control systems, SCADA system and energy management system.
DTM730 Three-phase Power Monitoring
Application scope
1.Disk instrument
2.Instead of normal pointer instrumentation
3.Low voltage three-phase power parameter measurement output loop
4.Power automatic monitoring system
Classic
1.Professional independent design, complete function
2.Industrial parts, the first-class quality
3.Classical structure design, extensible
4.Series is complete multiple types can be chosen
Careful design, bidding tool
1. Adapt to 0.4 KV three-phase ac voltage level below parameter measuring
2. Work power into the straight amphibious switch power, adapt to a wide range
3. Highlighted digital tube display data, data turns display and specified display can be chosen
4. Various types of optional, meet different needs.
5. Two way into straight dual-use switch input.
6. Electrorheological than site that, without order set.
DTM730 Three-phase Power Monitoring Specification
|
Current measurement (RMS) |
Working power supply |
|
CT a side 10000A |
Ac voltage 85～265VAC |
|
The CT secondary side 1A or 5A |
The power frequency 45～65Hz |
|
Measuring range 0～12K |
Dc voltage 100～300VDC |
|
The input power consumption ≤0.1VA |
Power consumption ≤2VA |
|
Measurement cycle 1S |
Switch input |
|
Accuracy measurement 0.2% |
The number 2 |
|
Continuous overload 1.2In |
Power supply 200VDC/220VAC |
|
Short-time overload 10 in 1 seconds |
Minimum width of the signal 0mS |
|
Voltage (RMS) measurement |
The minimum interval 18mS |
|
Direct measurement of line voltage 17～700VAC |
communication |
|
Direct measurement of the phase voltage 10-404VAC |
interface RS485 |
|
The frequency 50/60Hz |
agreement Modbus-RTU |
|
The input power consumption ≤0.1VA |
Modbus communication rate 2400-9600 |
|
Measurement cycle 1S |
Conform to the standard |
|
Accuracy of measurement 0.2% |
The perturbation resistance of electrostatic test |
|
Continuous overload 1.2Vn |
Radiation immunity test IEC 61000-4-3 |
|
Power and power factor measurement |
Rapid pulse train interference resistance test |
|
Measurement cycle 1S |
Rapid pulse train interference resistance test |
|
Accuracy of measurement 0.5% |
Radio frequency radiation interference test |
|
Frequency measurement |
The installation |
|
Measuring range 45～65Hz |
Overall dimensions 72×72×82 |
|
Measurement cycle 1S |
Enclosure degree of protection IP30 |
|
Accuracy of measurement 0.1% |
Panel protection grade IP52 |
|
Electricity metering |
Terminal type Pull out plug type |
|
Active electrical degrees 0.5level |
The voltage and other wire cross section 0.2-2.5㎜2 |
|
Degree of reactive power 2level |
Current conductor cross-sectional area 0.6-6.0㎜2 |
|
Pulse output |
The weight ≤300g |
|
The number 1 |
|
|
Minimum width of the signal 100uS |
|
|
The highest frequency signal 1000 |
|
|
Conditions of use |
|
|
Working temperature -30℃～55℃ |
|
|
Storage temperature -20℃～85℃ |
|
|
Relative humidity ≤95% |
|
Selection Guide
|
Function
|
DTM730
|
DTM731
|
DTM732
|
DTM733
|
DTM734
|
|
|
Real when measurement quantity
|
Value phase voltage
|
—
|
■
|
■
|
■
|
■
|
|
VIIavg line voltage
|
—
|
*
|
*
|
*
|
*
|
|
|
Current Iavg
|
■
|
—
|
■
|
■
|
■
|
|
|
Active power
|
—
|
—
|
■
|
—
|
■
|
|
|
Reactive power
|
—
|
—
|
—
|
■
|
■
|
|
|
power factor
|
—
|
—
|
*
|
—
|
■
|
|
|
frequency |
—
|
*
|
■
|
■
|
■
|
|
|
Energy |
Meritorious electric degrees |
—
|
—
|
*
|
—
|
■
|
|
Reactive electricity degrees |
|
—
|
—
|
*
|
■
|
|
|
Function expansion |
DI (active remote letter input) |
* 2
|
* 2
|
* 2
|
* 2
|
* 2
|
|
Electricity degrees pulse output |
|
-
|
* 1
|
* 1
|
* 1
|
|
|
Communication
|
RS485 communication
|
*
|
*
|
*
|
*
|
*
|
DTM730 series products are mainly classification
♦DTM730:
Three phasecurrent measure
♦DTM731:
Three-phase voltage measurement
♦ DTM732:
Three-phase voltages + current + active power + frequency
♦DTM733:
Three-phase voltages + current + reactive power + frequency
♦DTM734:
Three-phase current voltage + + active power + reactive power + power factor + frequency plus electric degrees
DTM730 series product function expansion
♦switch input
Extensible active switch input two road, which is used to detect circuit breaker state
♦electric degrees pulse output
Scalable way electricity degrees pulse output, used for electric degrees stack
♦Rs485 communication
Standard MODBUS - RTU agreement
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