Obvius AcquiSuite Ally 12 - Page 3

Revision C (12/18)
3
Technical Specifications
Specification
Description
Service Types
Single Phase, Split Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire
(Delta)
Voltage Channels
90-346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III.
Two independent voltage reference inputs
Current Channels
48 channels, 0.525 VAC max, 333 mV CTs, 0-4,000+Amps depending on current
transducer
Maximum Current Input
150% of current transducer rating (mV CTs) to maintain accuracy. Measure up to 4000A
with RōCoil CTs.
Measurement Type
True RMS using high-speed digital signal processing (DSP) with continuous sampling
Line Frequency
50-60 Hz
Power
From L1 Phase to L2 Phase. 90-600VAC RMS CAT III 50/60Hz, 500mA AC Max
Use of 12 volt auxiliary output requires 100 VAC minimum input voltage.
AC Protection
0.5A Fuse 200kA interrupt capacity
Power Out
Unregulated 12VDC output, 200 mA, self-resetting fuse
Waveform Sampling
1.8 kHz
Parameter Update Rate
1 second
Measurements
Volts, Amps, kW, kVAR, kVA, aPF, dPF, kW demand, kVA demand, Import (Received)
kWh, Export (Delivered) kWh, Net kWh, Import (Received) kVAh, Export (Delivered)
kVAh, Net kVAh, Import (Received) kVARh, Export (Delivered) kVARh, Net kVARh, THD,
Theta, Frequency. All parameters for each phase and system total.
Accuracy
0.2% ANSI C12.20-2010 Class 0.2
Resolution
Values reported in IEEE-754 single precision floating point format (32 bit).
Indicators
4-line display, tri-color backlight (PhaseChek™)
Pulse Input
AMC12 – 4 inputs, AMC48 – 2 inputs
Alarm Output
Voltage Phase Loss Alarm (SPDT Relay - 30 VDC) ( only)
Communication
Hardware
RS-485, Ethernet, & USB (for configuration only)
Supported Protocols
Modbus RTU or BACnet Master Slave Token Passing protocol (MS/TP)
Modbus (using SunSpec IEEE-754 single precision floating point model)
BACnet MS/TP
Modbus TCP
BACnet IP
Max Communication
Length (RS485)
1200 meters total cable length, with Data Range of 100K bits/second or less
RS-485 Loading
1/8 unit