Z207187-0A
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H622-20 Installation Guide
TM
Installation
1. Disconnect and lock out power.
2. Install the mounting bracket to the back of the electrical enclosure, no closer than 1/2” (12 mm) to an uninsulated conductor.
3. Place the conductor to be monitored in the sensing cavity of the current sensor. Ensure the latch is closed. See Notes section
below for currents under 2 A or above 20 A.
4. Wire the output connections between the H622-20 and the controller (0 to 5 Vdc).
5. Reconnect power.
6. Scale the controller software to match the output of the H622-20.
Notes
For load currents greater than sensor maximum rating:
Use a 5 Amp (H681x series) Current Transformer (CT) as shown.
H68xx-5A CT
>175 A (sensor max.)
240 A
300A:
5A
4 A
DANGER: 5A CTs can present hazardous voltages.
Install CTs in accordance with manufacturer's instructions.
Terminate the CT secondary before applying current.
NOTICE
RISK OF EQUIPMENT DAMAGE
• Never exceed the current sensor rating.
• Derate the product’s maximum current for the number of turns
through the current sensor 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.
