Single-phase Digital Panel Ammeter
Single-phase Digital Panel Ammeter

Single-phase Digital Panel Ammeter

The ZM-AA/DA digital ammeter series measures single-phase AC or DC current with high accuracy. It features a bright 7-segment display, programmable CT/shunt ratio, RS-485 (Modbus-RTU), optional digital I/O, and analog retransmission (4–20 mA/voltage), wide-range auxiliary power, and multiple panel sizes (48/72/96 mm) to fit different switchgear and PFC cabinets.

Technical Index

Accuracy of measurement

Current: class 0.5

Signal input

Connection mode: Single phase

Rated current :AC 1A, AC 5A, DC 20mA, DC 1A, DC5A, DC 75mV

Overload: 1.2 times (Continued), 10times for/5 seconds (instantaneous)

Power consumption:<0.4VA/phase

Impedance:<20mΩ

Frequency: 45~65Hz 

Auxiliary power supply

Working range: AC/DC 80V~270V, AC220V

Power consumption:<4VA

Function Module

Communication interface 1 way RS-485 communication, Modbus-RTU protocol 

baud rate:1200~9600bps, the default 2400bps

Switch input: support 2 stem node input

Switch output: supports 2 relay outputs, capacity: AC 250V/5A, DC 30V/5A

Transmission output: supports 1 analog

output: 0/4~20mAor 0~5/10V

Environment

Working temperature: -10℃~+55℃

Storage temperature: -25℃~+70℃

Relative humidity is less than 93%, no corrosive gas

Altitude: 2500m

Safety

Insulation resistance : >100MΩ

AC withstand voltage: AC 2KV

1. High precision to measure single-phase alternating current or DC current

2. Provide the digital tube display, local data query

3. Current ratio programmable settings

4. Support for RS-485 communication, Modbus-RTU protocol

5. Support for switching input, output, and analog quantity transmitting output

6. Auxiliary power supply: AC/DC 80V~270V, AC220V

7. A variety of shapes, to meet the different requirements of the cabinet body electric circuit

Electromagnetic compatibility

ESD: Class 4

Electrical fast transient burst: Class 4

Surge(impact): Class 4

Outline Dimensions

12.jpg

Performance Characteristics

1. High precision to measure single-phase alternating current or DC current

2. Provide the digital tube display, local data query

3. Current ratio programmable settings

4. Support for RS-485 communication, Modbus-RTU protocol

5. Support for switching input, output, analog quantity transmitting output

6. Auxiliary power supply: AC/DC 80V~270V , AC220V

7. A variety of shapes, to meet the different requirements of the cabinet body electric circuit

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