主页 > DTM820 Three-phase Power Monitoring
DTM820 series three-phase power parameter measurement instrument multifunctional provide comprehensive measurement function, can fully meet low pressure or high voltage three-phase power network of electrical control requirements..........
DTM820 Three-phase Power Monitoring
DTM820 series three-phase power parameter measurement instrument multifunctional provide comprehensive measurement function, can fully meet low pressure or high voltage three-phase power network of electrical control requirements. Also has strong function expansion, such as monitoring the two road switch state switch quantity input (or two road pulse output), control switch movements of the two road relay alarm output (or two ways 4-20mA simulation output), and will send via RS485 / MODBUS communications to instrument in networking management.
Application scope
1.Disk instrument
2.Instead of normal pointer instrumentation
3.Important loop power parameter measurement
4.Power automation 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
From classic, wins out
♦ below 35KV voltage level suitable for measuring the parameters of the three-phase ac
♦ work power into the straight amphibious switch power, adapt to a wide range
♦highlighted digital pipe or The large screen LCD, the data turns display and specified display can be chosen
♦ various types of optional, meet different needs
♦ two way into straight dual-use active switch input
♦ two road programmable relay alarm output
♦ two road optional analog output
♦ two road optional electricity degrees pulse output
♦ electrorheological than site that, without order set
DTM820 Three-phase Power Monitoring Specification:
|
Current measurement (RMS) |
Switch input |
|
CT a side 10000A |
The number 2 |
|
The CT secondary side 1A or 5A |
Power supply 100VDC/220VAC |
|
Measuring range 0～12KA |
Minimum width of the signal 10mS |
|
The input power consumption ≤0.1VA |
The minimum interval 18mS |
|
Measurement cycle 1S |
Alarm and control output |
|
Accuracy of measurement 0.2% |
The number 2 |
|
Continuous overload 1.2In |
Relay output capacity 5A 250VAC/30VDC |
|
Short-time overload <1min 10In |
Analog output |
|
Voltage (RMS) measurement |
The number 2 |
|
Direct measurement of line voltage |
type 4-20mADC |
|
Direct measurement of line voltage |
Load resistance ≤500∩ |
|
The frequency 50/60Hz |
communication |
|
The input power consumption ≤0.1VA |
interface RS485 |
|
Measurement cycle 1S |
agreement Modbus-RTU |
|
Accuracy of measurement 0.2% |
Modbus communication rate 2400~19200 |
|
Continuous overload 1.2Vn |
Conform to the standard |
|
Power measurement |
The perturbation resistance of electrostatic test IEC 61000-4-2 |
|
Measurement cycle 1S |
Radiation immunity test IEC 61000-4-3 |
|
Accuracy of measurement 0.5% |
Conduction rf interference test EN 55022,ClassB |
|
Frequency measurement |
Electrical fast transient pulse test |
|
Measuring range 45～65Hz |
Surge immunity test IEC 61000-4-5,Level 3 |
|
Measurement cycle 1S |
Radio frequency radiation interference test EN 55022,ClassB |
|
Accuracy of measurement 0.1% |
The installation |
|
Electricity metering |
Overall dimensions 96×96×55 |
|
Active electrical degrees 0.5 on the Richter scale are unlikely |
Enclosure degree of protection IP30 |
|
Degree of reactive power 0.2 on the Richter scale are unlikely |
Panel protection grade IP52 |
|
Working power supply |
Terminal type stationary |
|
Ac voltage 85-265VAC |
The voltage and other wire cross section 0.2-2.5㎜2 |
|
The power frequency 45-65Hz |
Current conductor cross-sectional area |
|
Dc voltage 100-300VDC |
The weight ≤500g |
|
Power consumption ≤2VA |
|
|
Conditions of use |
|
|
Working temperature -10℃～55℃ |
|
|
Storage temperature -20℃～85℃ |
|
|
Relative humidity ≤95% |
|
Selection Guide
|
Function
|
DTM820
|
DTM821
|
DTM822
|
DTM823
|
|
|
Real when measurement quantity value
|
Phase voltage
|
▲
|
■
|
■
|
■
|
|
Line voltage
|
*
|
*
|
*
|
*
|
|
|
Current
|
▲
|
■
|
■
|
■
|
|
|
Active power
|
▲
|
■
|
■
|
■
|
|
|
Reactive power
|
▲
|
■
|
■
|
■
|
|
|
Power factor
|
▲
|
■
|
■
|
■
|
|
|
frequency
|
▲
|
■
|
■
|
■
|
|
|
All of the above functions(Z)
|
*
|
—
|
—
|
—
|
|
|
Electricity
|
Meritorious electric degrees |
*
|
■
|
■
|
■
|
|
Reactive electricity degrees |
*
|
■
|
■
|
■
|
|
|
Expansion function
|
DI (passive remote letter input) |
—
|
2
|
—
|
2
|
|
DO (relay output) |
—
|
—
|
2
|
2
|
|
|
Electricity degrees pulse output (P)
|
—
|
—
|
*
|
*
|
|
|
Alarm
|
More limit alarm output (O)
|
—
|
—
|
*2
|
*2
|
|
Communication
|
RS485 communication
|
■
|
■
|
■
|
■
|
|
Display
|
LCD(C)
|
*
|
*
|
*
|
*
|
Note： “■”intrinsic function，“*”optional function，“—”no this function ,“▲”Combination of function, can be single or multiple choice and combination.
DTM820 series product main function
♦ DTM820:
Basic electricity parameter measurement + RS485
♦ DTM821:
Basic electricity parameter measurement + two road passive switch input + RS485
♦ DTM822:
Basic electricity parameter measurement + two road relay output plus electric degrees + RS485
♦ DTM823:
Basic electricity parameter measurement + two road active switch input + two road relay output plus electric degrees + RS485
* basic electricity parameter measurement includes three-phase voltage, current, active power, reactive power,
Power factor and frequencies real-time parameters.
« DTM830 Three-phase Power Monitoring DTM730 Three-phase Power Monitoring »
English
Español
中文