H8238 SERIES
Multi-Circuit Monitor
Monitor Eight 3-Phase
VERIS INDUSTRIES
BACne t
connectivity
via new
E8950
Gat e way
Circuits with One Device
DESCRIPTION
The H8238 Multi-Circuit Monitor power monitoring system provides a convenient
solution for monitoring multiple electrical services that share a common voltage
source. It also reports diagnostic information such as power factor, volts, amps, and
kVAR, over an RS-485 network using the industry standard Modbus communication
protocol. To protect valuable equipment, it has built-in alarm registers for over- and
under-voltage, current, and kVA.
The monitoring capabilities and open systems compatibility of the H8238 make
it the ideal power monitoring solution for OEM, tenant submetering applications,
and load management of power distribution units commonly used in internet data
centers.
power/energy monitoring
APPLICATIONS
● Tenant submetering
● Real-time power monitoring
● Activity-based costing
● Managing loads
H8238
FEATURES
● Revenue Grade measurements
● Save labor and installation costs by monitoring up to eight 3Ø, (or six 3Ø plus
neutral current) loads from a single service with common voltage connections
● Eliminates the need to install multiple transducers – fewer components to
install...saves time and space
● Easily connect up to 24 industry standard 5A CTs (solid-core and/or split-core)
● Modbus communication for ecient data collection
● Improve monitoring system eciencies by accessing 26 data points per circuit,
plus alarms, with one RS-485 drop
● Daisy chain up to 30 units on a single drop...easy wiring
● Field-selectable address, baud rate, parity and wiring connections...
simple conguration
● Use with E8950 gateway for BACnet connectivity...expanded
system compatibility
● Use with U013-0012 serial to ethernet protocol converter...easy
system integration
SPECIFICATIONS
Inputs:
Control Power +10/-25 % (90-132VAC); (180-264VAC for H8238E), 50/60 Hz
Voltage Input
Maximum Voltage 48 0VAC+10% = 528VAC
Frequency 60 Hz
Current Input
Number of Channels 24 (8 meters x 3 phases/meter), 6 meters if neutral monitored
CT Input Type 5 Amp (customer supplied)
CT Range Each 3-phase circuit is independently congurable from 1 A to 999 9A (using 5A output CTs)
Accuracy:
Accurac y ±1% when amperage is at 10% to 100% of range (exclusive of user-supplied CTs)
Sample Rate 1280 Hz
Variable Update Rate 200 msec for voltages, 1.6 sec s for all other
Outputs:
Typ e RS-485 Modbus RTU
Connection DIP-switch selectable 2-wire or 4-wire
Address DIP-switch selectable base address (1 to 233 in steps of 8)
Baud Rate DIP-switch selectable 2400, 4800, 9600, or 19200
Parity DIP-switch selectable NONE/ODD/EVEN
Communication Format 8 data-bit s, 1 start-bit, 1 stop-bit
Termination 5-position pluggable connector
Environmental:
Operating Temperature Range 0° to 60°C (32° to 140°F)
Storage Temperature Range -40° to 70°C (-4 0° to 158°F)
Humidity Range 0-95% noncondensing
Agency Approvals UL508, E N61010
Year
5
Warranty
800.354.8556
+1 503.598.4564
www.veris.com
HQ00 01815.B 01131
800.354.8556
+1 503.598.4564
www.veris.com
APPLICATION/WIRING EXAMPLES
3-Phase 4-Wire Installation
1-Phase 3-Wire Installation
DIMENSIONAL DRAWING
Top View
Side View
main circuit board
mounting bracket
3
WIDTH:
A = 5.3” (135mm) board
B = 8.9” (226mm) mounting bracket base
LENGTH:
C = 6.0” (153mm)
D =12.8” (325mm)
HEIGHT:
E = 2.9” (74mm)
F = 4.0” (101mm)
A B
C
D
F
E
1-Phase 2-Wire Installation
DATAOUTPUTS
kWh Energy Consumption
kW Real Power
kVAR Reactive Power
kVA Apparent Power
Power Factor Total
Voltage, L-L, avg. of 3 phases
Voltage, L-N, avg. of 3 phases
Current, averag e of 3 phases
kW Real Power, phase A
kW Real Power, phase B
kW Real Power, phase C
Power Factor, phase A
Power Factor, phase B
Power Factor, phase C
Line to Line Voltage, phase A-B
Line to Line Voltage, phase B-C
Line to Line Voltage, phase A-C
Line to Neutral Voltage, phase A-N
Line to Neutral Voltage, phase B-N
Line to Neutral Voltage, phase C-N
Current, phas e A
Current, phas e B
Current, phas e C
kW Average
kW Minimum
Frequency (measured from phase A)
Modbus® Alarms:
Over Voltage
Under Voltage
Over Current
Under Current
Over kVA
Under kVA
Phase Loss A
Phase Loss B
Phase Loss C
power/energy monitoring
ORDERING INFORMATION
MODEL DESCRIPTION
H8238 Multi-Circuit Monitor, 90-130VAC supply voltage
H8238E Multi-Circuit Monitor, 240VAC supply voltage
*For 240VAC supply voltage version, order H8238E
HQ00 01815.B 01131
H8238 Series transducers are sold as open devices.
Observe handling precautions for static sensitive
devices to avoid damage to the circuitry which
would not be covered under the factory warranty.
ACCESSORIES
AL, BL, CL 5AAC Solid-Core Current Transformers
H681x-5A Split-Core Current Transformers
Modbus-to-BACnet Converter (E8950)
Modbus TCP Gateway (U013- 0012)
H681x-5A
AL BL
CL
E8950U013-0012