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Module for alternate current measurements

Key features

  • 3 inputs 5A/380V compatible with most popular commercial current transformers (not included)
  • Simple and quick installation, without services
  • breakdown
  • Alarm thresholds
  • Sampling and transmission rates are confi gurable
  • Battery powered
  • Internal antenna

The DB2-AC is a battery supplied ZigBee device which can perform alternate current measurements on 3 channels and send these values at regular intervals to a Gateway of the Digitron products family.
This device may be confi gured to manage alarm thresholds when exceeding maximum or minimum levels of measures. It is also possible to adjust the sampling and data transmission rate to improve battery duration.

Technical Specs
General characteristics
Chip Ember EM250
Compatible IEEE 802.15.4
Stack EmberZnet 3.5.x (ZigBee PRO) Modbus/RTU
Device address settable via internal dip-switch DIN Rail Mounting
RF characteristics
Frequency: 2405 MHz ÷ 2480 MHz
Modulation: DSSS
Nominal transmission power: 2 mW (3 dBm)
Reception sensitivity: -95 dBm
Internal antenna gain: 0 dB
Coverage outdoor/indoor: 100m/30m
AA high energy density lithium battery 3,6V/2000mAh
Battery life: 3 years in case of 1
transmission per minute at 20°C
AC current measurement
Measurement range: 0 ÷ 5A rms
Measurement resolution: 1mA
Measurement accuracy: ±2%
Environment parameters
Operating temperature: -10 ÷ +60°C; <80% U.R. not condensing
Storage temperature: -20 ÷ +70°C; <80% U.R. not condensing
Degree of protection: IP 55
Compliant with 2006/95/EEC, 89/336/EEC, 99/5/EEC directives Reference Norms
ETSI EN 300 328: Radio Compatibility for digitals wide band transmissions
ETSI EN 301 489: Radio Compatibility
EN 61000-6-2: Electromagnetic Compatibility - Emissions
EN 61000-6-3: Electromagnetic Compatibility - Immunity
EN 60950-1: Electric Safety

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