Ampere Meter
PA7777-S series three phase digital Ammeter Summary&application: PA7777-S series three phase digital Ammeter is the new generation of programmable intelligent instrument, mainly applied into real-time measurement and indication for the phase current in the three phase electrical circuit,...
- Product Introduction
PA7777-S series three phase digital Ammeter
Summary&application:
PA7777-S series three phase digital Ammeter is the new generation of programmable intelligent instrument, mainly applied into real-time measurement and indication for the phase current 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 current 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) | K | B analog quantity output | External size | Display mode | |
3-phase voltage | 3-phase current | ||||||
PA7777-2S |
| ● | @ | @ | @ | 72×72 |
LED display |
PA7777-3S |
| ● | @ | @ | @ | 96×96 | |
PA7777-4S |
| ● |
|
|
| 48×48 | |
PA7777-6S |
| ● | @ | @ | @ | 80×80 | |
PA7777-8S |
| ● | @ | @ | @ | 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, assumed 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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