Overview

Diris A-20 meters are high-performance metering and monitoring devices ideal for energy efficiency and monitoring.

Key features:

• Clear back-lit white display
• Wiring error detection
• Modules available for Pulse and Modbus RTU
• Power Quality measurement (THD up 51st)

Specification

Electrical (Current)

• Via CT Primary: 9999A
• Via CT secondary: 5A
• Measurement Range: 0…11kA
• Input Consumption: 0.6VA
• Measurement update period: 1 second
• Accuracy: 0.2
• Permanent Overload: 6A

Electrical (Voltage)

• Direct Measurement P-P: 50-500 VAC
• Direct Measurement P-N: 28-289 VAC
• Input Consumption: ≤ 0.1 VA
• Measurement Update Period: 1 second
• Accuracy: 0.2%

Power Measurement

• Measurement Update Period: 1 second
• Accuracy: 0.5%

Power Factor Measurement

• Measurement Update Period: 1 second
• Accuracy: 0.5%

Energy Accuracy

• Active: Class 0.5S (according to IEC 62053-22)
• Reactive: Class 2 (according to IEC 62053-23)

Auxillary power supply

• Alternative voltage: 110-400 VAC
• AC Tolerance: ± 10%
• DC Voltage: 120…289 VDC
• DC Tolerance: ± 20%
• Frequency: 50/60 Hz
• Power consumption: 10VA
• Frequency: 50/60 Hz
• Power consumption: 10VA

Pulse or alarm output (Optional 4825-0080)

• Number: 1
• Type: 100VDC – 0.5A – 10 VA

Inputs

• Number: 3
• Power Supply: 10…30 VDC
• Minimum width of signal: 10ms
• Minimum length between 2 pulses: 18ms
• Type: Optical couplers

Communication

• Link: RS485
• Type: 2 to 3 half-duplex wires
• Protocol: Modbus in RTU mode
• Modbus Speed: 1400…38400 Baud