Acrel ADW300 DIN Rail Power Meter

ADW300 wireless meter is mainly used to measure three-phase active power in low-voltage network. It has the functions of RS485 communication and 470MHZ wireless communication. It is convenient for users to monitor, collect and manage electricity. It can be flexibly installed in the distribution box to realize the measurement, statistics and analysis of individual electric energy in different regions and loads.

Naming rules for ADW300 Wireless Metering Instruments  

Functional Characteristics of ADW300 Wireless Metering Instrument

Electrical performance

Working  environment conditions

Outline dimensions and installation instructions

Wiring instructions

ADW300 and ADW300W can be connected by three-phase four-wire through current transformer, three-phase three-wire through current transformer, three-phase four-wire through voltage transformer and current transformer and three-phase three-wire through current transformer and voltage transformer.

ADW300 Wiring instructions

Main Functional Characteristics

It can measure all power parameters including voltage U, current I, active power P, reactive power Q, apparent power S, power factor PF, phase angle of voltage and current Φ, voltage unbalance, current unbalance, frequency F, 2-31st fractional harmonics, odd and even total harmonics and total harmonics. Voltage U reserved 1 decimal, frequency F reserved 2 decimal, current I reserved 3 decimal, power P reserved 4 decimal, phase angle Φ reserved 2 decimal, unbalance  reserved 2 decimal.

Supporting 4-channel temperature measurement and residual current monitoring

Communication protocol

The instrument adopts MODBUS-RTU protocol or DL/645 protocol. For specific protocol formats, please refer to the relevant protocol standards.

Common errors check and solve

1 The meter do not light after powered, or one path of voltage indicator do not light.

Suggestion: Please turn the screw to ensure that the meter needle has been punctured and contacted with the cable inner
conductor cable.

2 Meter’s wireless communication failure

Suggestion: Please connect RS485 interface on the meter and USB convert to 485 serial port to read the parameters, and
confirm whether the parameters are the same as the upper terminal wireless configuration (channel and spread spectrum
factor). If different, please modify the meter’s wireless parameters and retest the master terminal after the same, and if
the same, it may be the meter and master terminal are in a relative long distance. It is too far to communicate or the scene
is seriously disturbed. We can try to use the external antenna at the same time, or consider the newly added wireless
master terminals, and then test it.