Veris H704 Datasheet
H704 SERIES
Branch Current Monitor,
Solid-Core
Monitor Current on Every
Breaker
VERIS INDUSTRIES
H704
DESCRIPTION
The H704 Series branch circuit current monitoring system provides a cost-eective
solution for electrical load management, making it ideally suited for applications
where load capacit y requirements are dynamic, such as the data storage industry,
lighting panels, etc.
The H704 monitors the current draw of each breaker in a panelboard. The
accumulated information can be transmitted to a Modbus host and/or viewed on
an optional local display via an RS-485 network. Data updates occur approximately
once per second to provide timely preventative maintenance information. As a circuit
approaches capacity, warning and alarm levels trigger (see graph, facing page).
Additional capacity can then be added, or loads balanced, to prevent costly downtime
from overloaded circuits and unexpected breaker trips.
power/energy monitoring
APPLICATIONS
● Retrotting panelboards
● Cost allocation
● Protecting against overload
● Managing and balancing loads
● Lighting circuits
FEATURES
● Up to 63 H704s can be networked on one Modbus RS-485 drop...simplied wiring
● Reports current consumed on each circuit in the panel board...one product covers
multiple points
● 3/4 or 1 inch on center current sensors accommodate standard breakers...easy
installation
● Provides Modbus registers for current limit warnings and alarms...prevents
breaker trips
● Integrates with available network display for local indication
● Built-in ability to set the orientation and numbering of the circuits
Year
SPECIFICATIONS
Inputs:
Input Power 120VAC (+10/-25%) line-to-neutral, 50/60Hz; (208/230VAC for H704-42E)
Frequency 50/60 Hz
Accuracy:
Accurac y ±2% of reading from 5A to 50A
Sampling Frequency 1280 Hz
Update Rate 1.2 sec
Outputs:
Type Modbus® RTU
Connection DIP-switch selectable 2-wire or 4-wire
Address DIP-switch selectable address 1 to 247
Baud Rate DIP-switch selectable 2400, 4800, 9600, 19200
Parity DIP-switch selectable NONE,ODD,EVEN
Communication Format 8 data-bit s, 1 start-bit, 1 stop-bit
Mechanical:
Connection to Conductor Solid-core toroid
Number of Channels up to 42
Environmental:
Operating Temperature Range 0° to 60°C (32° to 140°F) (<95%RH, non-condensing)
Storage Temperature Range -40° to 70°C (-4 0° to 158°F)
†
Do not apply 300V Class current t ransformers to circuits havi ng a line-to-neutral voltage greater than 300V, unless adequate additio nal insulation
is applied betwee n the primary conductor and the current transformer s. Veris assumes no responsibilit y for damage of equipment or persona l injury
caused by products operated on ci rcuits above their publ ished ratings.
5
Warranty
H704 Series transducers are sold as an open device.
Observe handling precautions for static sensitive
devices to avoid damage to the circuitry which
would not be covered under the factory warranty.
†
800.354.8556
+1 503.598.4564
www.veris.com
HQ0001912.A 01121
800.354.8556
19.5"
(241 mm)
0.75" on center
(19 mm)
0.35" opening
(9 mm)
1.0"
(26 mm)
24.0"
0.35" opening
1.0"
1.0" on center
1mm)
H704-42 CURRENT SENSOR STRIP
H704-42 CURRENT SENSOR STRIP
H704-42 CURRENT SENSOR STRIP
H704-42 CURRENT SENSOR STRIP
H704-42
Data
Acquisition
Board
Modbus
Up to 63
H704-42s
Ribbon
Cable
To Controller
or PC
Panel Board 1 Panel Board 2
*20A
*Example represents 20 Amp circuit
†Configurable time delay for alarm and warning
0A
TIME
70% (14A)
Alarm Signal†
60% (12A)
Warning Signal†
Amp
Draw
Eect of
Rebalancing
Critical
State
Ckt. 1
Ckt. 2
+1 503.598.4564
www.veris.com
APPLICATION/WIRING EXAMPLES
OPERATION EXAMPLE
DIMENSIONAL DRAWING
Signal Acquisition Board
7.25”
(184 mm)
Current Sensor Strip
H704 -42
6 4 2
12
10 8 18
16
14
24
22
20
30
28
26
36
34
32
42
40
38
5.75”
(146 mm)
ORDERING INFORMATION
MODEL BREAKER SPACING AMPERAGE RANGE OUTPUT
H704-4 2 3/4” on center 10-50* (congurable) RTU Modbus
H704-42/1 1” on center 10-50* (congurable) RTU Modbus
For the 100A version, order the H704-42H or H704-42/1H.
For the 240VAC version, order the H704-42E or H704-42/1E.
For the 240VAC, 100A version, order the H704-42EH or H704-42/1EH.
For N2 protocol, order H726-xx.
HQ0001912.A 01121
Notes:
* Hole size accomodates up to 6 AWG (10mm2) THHN insulated conductors.
†
Other protocols available, consult factory.
†
†
0.75”
(19mm)
1.0”
(26mm)
ACCESSORIES
Network Display (H8936)
0.4” opening
(10.16mm)
H704 -42/1
H704 -xxH
19.5”
(495mm)
0.75” on center
20.31”
(515mm)
(19mm)
1.0”
(26mm)
1.2”
(3
power/energy monitoring
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