WARNING!:
Be sure power is off before terminating the OVRHTE leads.
Raceway:
To route OVRHTE conductors to the panel being
protected, choose from any of these materials: (1) non-metallic
flexible conduit, (2) metallic flexible conduit, (3) rigid conduit or
(4) a nipple. The OVRHTE enclosure is provided standard with a
19.1 mm (.75 in.) hub which will accept rigid or IMC conduit. A
plastic flexible conduit with fitting and a 76.2 mm (3 in.) nipple
are available as options.
Wire length:
Use the supplied 609.0 mm (24 in.), 5.26 mm
2
(#10 AWG) leads. Trim leads to suit the application but do NOT
splice to add length to the leads. Refer to Figures 1–4 for the
color code of the OVRHTE leads. Terminate the leads as shown.
(Note: For optimum performance, keep leads as short as
possible and avoid sharp bends.)
Overcurrent protection:
OVRHTE leads must be protected with
an overcurrent protection device (circuit breaker or fuse) rated
at 20 amps. Use a 3-pole breaker for 3-phase units or a 2-pole
breaker for single-phase units.
Dry Contacts:
For OVRHTE units with optional dry contacts,
use butt splices within the panelboard to connect the dry
contacts leads to the user’s monitoring circuits. Alternatively,
install a junction box between the OVRHTE and the panelboard
to connect dry contacts leads to user’s monitoring circuits.
(
See Figure 6). Consult applicable local codes to ensure proper
installation.
Before applying power
– Measure the line to line voltage at the panel to be protected
and be sure it is within ±10% of rated line to line voltage of
the OVRHTE. Use the following table to determine the range
of acceptable voltage for each model of OVRHTE.
Acceptable voltage ranges for All OVRHTE models
OVRHTE
Nominal
L-L voltage range
model number
voltage
OVRHTExx1201P 120V
N/A
OVRHTExx2401P 240V
N/A
OVRHTExx1202S
120/240V
216 to 264
OVRHTExx1203Y
120/208V
188 to 228
OVRHTExx2203Y
220/380V
342 to 418
OVRHTExx2403Y
240/415V
374 to 457
OVRHTExx2773Y
277/480V
432 to 528
OVRHTExx3473Y
347/600V
540 to 660
OVRHTExx2403H
120/240V
216 to 264
OVRHTExx2403D
240V
216 to 264
OVRHTExx3803D
380V
342 to 418
OVRHTExx4803D
480V
432 to 528
Where “xx” = 25, 50, 80, 100 kA per mode
WARNING!:
Do not apply power if the measured voltage is not within
the range specified for the OVRHTE model being installed.
Electrical connections
6 Product manual |
OVRHTE surge protective devices
