3 Phase Voltage Meter

3 Phase Voltage Meter

PZ7777-S series three phase digital Voltmeter Summary&application: PZ7777-S series three phase digital Voltmeter is the new generation of programmable intelligent instrument, mainly applied into real-time measurement and indication for the phase voltage, wire voltage in the three phase...

Product Details

PZ7777-S series three phase digital Voltmeter

Summary&application: 

PZ7777-S series three phase digital Voltmeter is the new generation of programmable intelligent instrument, mainly applied into real-time measurement and indication for the phase voltage, wire voltage in the three phase electrical circuit, realizing remote data for the measured electrical quantity data through RS485 interface or analog quantity transmission interface.


1. Main functions and characteristics:

◆Real-time measurement and indication for the phase voltage and wire voltage value in the electrical circuit.

◆Extendible for one-way analog output function, with optional transmitting specifications of 4-20mA, 0-20mA and 0-10mA.

◆Extendible for relay switch quantity output function, to realize the upper and lower limit alarming output.

◆Extendible for RS-485 communication interface, adopting the standard ModBus-RTU communication protocol and the baud rate can be set.

◆The instrument is characterized with parameters such as range, upper/lower-limit alarm value, alarm return difference, communication address of the meter, baud rate, transmitting output mode, etc. are programmable.

 

2. Model specification and selection description

Model

Measurement display

T(communication)
     RS485 interface

K    Switch quantity output

B analog quantity output

External size

Display mode

3-phase voltage

3-phase current

PZ7777-2S

 

@

@

@

72×72

 

LED display

PZ7777-3S

 

@

@

@

96×96

PZ7777-4S

 

 

 

 

48×48

PZ7777-6S

 

@

@

@

80×80

PZ7777-8S

 

@

@

@

120×120

 

Note: 

●means the intrinsic functions of the  instrument 
@means extendible  corresponding optional functions of this series of instruments.


3. Main technical performance and parameters

Technical parameters

index

Accuracy class

Class 0.5

 

 

Input

 

Voltage

Rated value

AC100V, 450V

Overload

Continuous: 1.2 times, instant: 2 times/5s

Consumption

≤1VA(each phase)

Resistance

100V(about 120K), 450V(about 600K)

 

Current

Rated value

AC1A, 5A

Overload

Continuous: 1.2 times, instant: 10 times/5s

Consumption

≤0.5VA(each phase)

Resistance

<20mΩ(each phase)

Measuring rang of the frequency

45Hz-65Hz

 

 

Output

Display mode

3 phase 4 digit LED display, the max. Voltage resolution is 0.1V, the max. Current resolution is 0.001A; the unit switches automatically, the decimals shift automatically.

Display range

Voltmeter AC0~999.9kV(PZ7777-4S is 0~9999V)
Ammeter AC0~99.99kA(PA7777-4S is 0~9999A)

Switch quantity output(*)

Upper/lower-limit alarm with the same relay output, contact capacityAC250V/5A, DC30V/2A, can work in the remote mode

Analog quantity output(*)

DC0mA~10mA, DC0mA~20mA, DC4mA~20mA, Class 0.5, output overload≤500Ω,customizable voltage output

 

Communication
       (*)

Mode

RS-485

Protocol

MODBUS-RTU

Baud rate

1200bps, 2400bps, 4800bps, 9600bps, 19200bps, assume to be 9600bps

Working power supply

Range

AC/DC 85~264V

Consumption

<5VA


Note: 

the items marked * are optional, which shall be  specified by the customers when ordering.

 

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