ACL Slave

The **ACL Slave** Meter is an accurate power meter with 3 voltage inputs (+N) and 4 current clamp inputs connected to a RS485 Bus network.

ACL Slave

The ACL Slave Meter is an accurate power meter with 3 voltage inputs (+N) and 4 current clamp inputs connected to a RS485 Bus network. In addition the power meter has 4 dry inputs to connect any input like special circuit breakers (with dry contact outputs) or raid contact for the tap off boxes. Those contacts can generate SNMP traps that can be used for monitoring purposes.

The ACL Slave is also a compact DIN-Rail Power module that can have 4 mixed current clamps ranging from 25A up to 2000A.

Following information is measured on each port:

  • tRMS voltage (V) on each voltage input (3)

  • tRMS current (A)

  • Apparent Power (VA)

  • Real Power (W)

  • Reactive Power (VAr)

  • true Power Factor (tPF in %)

  • Total Harmonic Distortion

  • Resettable Energy (kWh, kVAh)

  • Non-resettable Energy (kWh, kVAh)

  • Harmonic information Voltage (up to 59th harmonic)

The ACL Slave provides you with the missing element for a complete power monitoring solution and solves any issues with large or distributed estates of AC powered equipment. With this addition Racktivity gives you the tools to measure and analyze your data in order to prevent downtime and reduce your carbon footprint in data center and your building.

Features

Measure AC voltage

  • On 3 phases: L1, L2, L3
  • Input range: 100-240 VAC
  • Accuracy: +/- 1%

Measure AC current

  • On 4 inputs: each input can be manually assigned to the corresponding phase
  • Input range: up to 2000A (depends on the current transducer used)
  • Accuracy: +/- 1%

4 insulated inputs for breaker trip notification or other use case

Calculates and measures all electrical metrics per input

Power supply via L1 (phase 1) or via RBUS

Input grouping (3 phases) and neutral current calculation

Communication trough RS485

Technical specifications

ACL Slave Available?
Dimensions in cm (WxHxD): 8.8 x 9 x 5.8
Dimensions in inch (WxHxD): 3.46 x 3.54 x 2.1
RS485 Bus connection Yes
Dimensions in cm (WxHxD): 8.8 x 9 x 5.8
Dimensions in inch (WxHxD): 3.46 x 3.54 x 2.1
RS485 Bus connection Yes
tRMS Voltage measurement per phase Yes, 3phase+N
tRMS Current measurement per phase Yes, 4
Real Power (W) per phase Yes
Total Real Power (W) Yes
Apparent Power (VA) per phase Yes
Total Apparent Power Yes
True Power Factor (tPF in %) per phase Yes
Frequency (Hz) per phase Yes
Power consumption (kWh) per phase Yes
Total Power Consumption (kWh) Yes
Total Harmonic distortion (THD) Yes
Harmonic information Voltage (up to 59th) per phase Yes
Harmonic information Current (up to 59th) per phase Yes
Oscilloscope view (Voltage, current, harmonics) Yes
Dry contact input 4 inputs
Maximum number node per RS485 bus 32
Power over RS485 Yes
Power over phase1 Yes
Led indicators Yes
Built-in webserver No Built into Cloud Connector
SNMP read/write/traps No Built into Cloud Connector
Open API over Ethernet No Built into Cloud Connector
Internal temperature sensor Yes
Din-Rail mountable Yes
RS485 Network Connector 2x RJ45
CT connector Yes

Look & Feel

Documentation

Connection on 3 phase breakers + N
Download the ACL Series user manual