Veris Industries H908 Install - Manual (Page 3)

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Installation Guide
Current Monitoring
H908
TM
Notes For load currents greater than sensor maximum rating:
Use a 5 Amp (H68xx series) current transformer (CT) as shown. This technique can be combined with wrapping (see below) to add
range for a low current load on a high current source.
DANGER: 5A CTs can present
hazardous voltages. Install
CTs in accordance with
manufacturer's instructions.
Terminate the CT secondary
before applying current.
CAUTION
RISK OF EQUIPMENT DAMAGE
• Derate the product’s maximum current for the number of turns
through the sensing window using the following formula.
Rated Max. Amps ÷ Number of Turns = Max. monitored Amps
e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor
• Failure to follow these instructions can result in overheating
and permanent equipment damage.
4x
1A
H68xx-5A CT
240A
300A: 5A
4A
>135 A (sensor max.)
< 2.5 A (Sensor Min.)
For load currents less than sensor minimum rating:
Wrap the monitored conductor through the center window and around the sensor body to produce multiple turns. This increases
the current measured by the transducer. Program the controller to account for the extra turns (e.g., if four turns pass through the
sensor (as shown) divide the normal reading by 4).