Veris H421 Installation Instructions
Installation Guide
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Follow safe electrical work practices.
See NFPA 70E in the USA, or applicable local codes.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Read, understand and follow the instructions before installing this product.
• Turn off all power supplying equipment before working on or inside the equipment.
• Use a properly rated voltage sensing device to confirm power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION
• Only install this product on insulated conductors.
Failure to follow these instructions will result in death or serious injury.
A qualied person is one who has skills and knowledge related to the construction and
operation of this electrical equipment and the installation, and has received safety
training to recognize and avoid the hazards involved. NEC2011 Article 100
No responsibility is assumed by Veris Industries for any consequences arising out of the
use of this material.
DANGER
Current Sensors
NOTICE
• This product is not intended for life or safety applications.
• Do not install this product in hazardous or classified locations.
• The installer is responsible for conformance to all applicable codes.
• Mount this product inside a suitable fire and electrical enclosure.
TM
TM
H421/H421SP
Split-Core Current Transducer,
High Current, 4-20mA Output
Product Overview
The H421 and the H421SP are current transducers that sense current (amperage) in the monitored conductor. The
H421 amperage range is eld-adjustable, with ranges of 0-1000A thru 0-2400A possible. The H421SP is factoryset at a range with an upper limit specied by the customer upon ordering (1000A, 1200A, 1400A, 1600A, 1800A,
2000A, 2200A, 2400A, and 2400A options available for upper limits). Both devices transform the monitored current
into 4-20mA DC output, suitable for connection to building controllers or other appropriate data acquisition
equipment. The H421 and H421SP require a 12-30 VDC external power supply to generate their output.
Specifications
Sensor Power
Amperage Range
Sensor Output
Response Time
Insulation Class
Frequency
Temperature Range
Humidity Range
Accuracy
Zero Adjustment
Terminal Block Wire Size
Terminal Block Torque
Installation Category
30mA (max.) @12- 30V DC
H421: 0 -1000A thru 0 -240 0A (scalable)
H421SP: Factory-set at a customer-specified upper limit (1000, 1200,
1400, 1600, 1800, 200 0, 220 0, and 24 00 A available )
4-20mA
2 sec.
600VAC RMS, insulated conductors only
50 /6 0 Hz
-15° to 60°C ( 5° to 140°F )
10-9 0% RH non-condensing
±2% F.S. from 10% to 10 0% of selected current range
nominal output@0A: 4mA ± 0.5
12 to 22 AWG (3.3 to 0.3 mm2)
3.5 to 4.4 in-lb (0.4 to 0.5 N -m )
Cat. III, pollution degree 2
Z201200-0G Page 1 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 06132
Alta Labs, E nercept, Ensp ector, Hawkeye, Trus tat, Aerospo nd, Veris, and th e Veris ‘V’ log o are tradema rks or registe red tradema rks of Veris Ind ustries, L. L.C. in the USA and /or other countri es.
This product provides basic insulation only.
Product Identification
Part Number Description
H421 High current monitoring, 4-20 mA analog output, scalable amperage range (1000 to 2400 A upper limit)
H421SP High current monitoring, 4-20 mA analog output, amperage range set at factory (1000, 1200, 1400,
1600, 1800, 2000, 2200, or 2400 A upper limit, specied by customer at ordering)
Other companies’ trademarks are hereby acknowledged to belong to their respective owners.
Installation Guide
Current Sensors
H421/H421SP
TM
Dimensions
Installation
5.92”
(151 mm)
5.50”
(140 mm)
2.45”
(62mm)
1.13”
(29 mm)
8.13”
(207 mm)
4.90”
(125 mm)
Disconnect and lock out power to the enclosure containing the conductor to be
monitored.
1. Choose a location for the sensor. The monitored conductor must pass
through the center window, and the sensor must be at least ½” (13 mm)
from any uninsulated conductors. Determine cable routing for the controller
connection, allowing the sensor to reach the conductor.
2. Wire the output connections between the sensor and the controller
(4-20 mA).
3. Snap the sensor over the conduc tor to be monitored.
4. Secure I-bar to main body of sensor with wire ties or other securing method.
CONTACTOR
421
+
–
12-30VDC
Power Supply
DIGITAL CONTROL
+
AI
–
Wire tie
Motor
Fan or Pump
5. Secure the enclosure and reconnect power.
6. Scale the sensor range, then scale the controller software to match the sensor’s output (see Scaling section).
Z201200-0G Page 2 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 06132
Alta Labs, E nercept, Ensp ector, Hawkeye, Trus tat, Aerospo nd, Veris, and th e Veris ‘V’ log o are tradema rks or registe red tradema rks of Veris Ind ustries, L. L.C. in the USA and /or other countri es.
Other companies’ trademarks are hereby acknowledged to belong to their respective owners.
Loading...