Smart meters,Power quality monitoring,Three-phase power monitoring,Single-phase power monitoring

DTM820 Three-phase Power Monitoring

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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 17-700VAC	type 4-20mADC
Direct measurement of line voltage 10-404VAC	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 IEC 61000-4-4,Level 3
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 0.6-6.0㎜2
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	*	■	■	■
Electricity	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.

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Contact Us

Contact: Mr. Jason Zeng

sales@zntar.com

zntarjason@gmail.com

Skype: zntarjason

Cell: 86-15880217206

Tel.: 86-592-6220649

Fax: 86-592-6220649