ABB OVRHT3 Series User manual

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PRODUCT MANUAL
OVRHT3 series and OVRHS3U series
Surge protective devices
Installation, operation and maintenance manual
OVRHT3B OVRHT3C OVRHS3U
WARNING!:
THE OVRHT3 SERIES AND OVRHS3U SERIES WARRANTY IS VOIDED if the unit is damaged as a result of improper installation or the installer’s
failure to verify the following conditions prior to installation.
WARNING!:
HAZARDOUS VOLTAGES PRESENT: Improper installation or misapplication may result in serious personal injury or damage to the electrical
system. Read the complete installation instructions before proceeding with installation. Remove all power to the electrical panel before
installing or servicing the SPD.
WARNING!:
IMPORTANT SAFETY INSTRUCTIONS: All work must be performed by licensed and qualified personnel. Follow applicable electrical specifications
for the country the unit is being used in.
WARNING!:
Check to ensure that a proper bond is installed between neutral and ground at the transformer upstream from all 3-phase Wye, 3-phase
High-leg, 2-phase, or 1-phase, OVRHT3 series and OVRHS3U series device. If the transformer is not accessible, check the main service
disconnect/panel for the NG bond. Lack of a proper bond will damage OVRHT3 series and OVRHS3U series and void the warranty.
WARNING!:
Do not HIPOT the OVRHT3 series and OVRHS3U series units or the electrical system to which the OVRHT3 series and OVRHS3U series unit is
connected without disconnecting the OVRHT3 series and OVRHS3U series units conductors including phases, neutral and ground.
Warning! lnstallation by person with electrotechnical expertise only.
Warnung! lnstallation nur durch elektrotechnische Fachkraft.
Avertissement! lnstallation uniquement par des personned qualifiées électrotechnique.
iAdvertencia! La instalación deberá ser realizada únicamente por electricistas especializados.
Thank you for choosing the ABB
OVRHT3 series and OVRHS3U series
Surge Protective Device (SPD).
We look forward to fulfilling your
facilitywide surge protection needs.
This manual provides guidelines for the proper installation of the
OVRHT3 series and OVRHS3U series of devices. Proper product
selection and compliance with these guidelines will help your new
suppression system provide years of reliable service. If installers
are unsure about the facility electrical configuration or have other
installation-related questions, it is recommended they consult with a
qualified electrical professional.
When shortcuts are taken or installation procedures are not followed,
the OVRHT3 series and OVRHS3U series may become damaged or may
not provide adequate protection. It is extremely important to follow
these installation procedures carefully.

2OVRHT3 SERIES AND OVRHS3U SERIES SURGE PROTECTIVE DEVICES
Installation
For the OVRHS3U series units refer to Table 1 to see if an upstream
overcurrent protection device is required. All OVRHT3 series units
are Type 1 and do not require upstream overcurrent protection for
safe operation; however, the design may require or the installer may
choose to connect the OVRHT3 series to a circuit breaker, molded
case switch or fused disconnect. If a breaker or molded case switch
is used for connecting the phase conductors, a 30 amp rating is
recommended. The unit must be installed in parallel to the electrical
distribution system. Careful consideration should be made in
selecting the knockout location because excess lead length and
sharp bends in the wire drastically decrease the effectiveness of the
SPD. The SPD may also be mounted by it’s metal bracket within the
equipment enclosure.
1. Disconnect all power supplying the electrical panel.
2. Remove the panel screws and cover. Retain these parts for
re-installation.
3. Either remove a knockout 13mm (0.5 inches) or install provided
metal bracket.
4. Remove lock washer from the SPDs threaded nipple. Carefully
feed the wires through the knockout to avoid cutting wire
insulation. Slide lock washer over the wires to anchor the
threaded nipple. Rotate the SPD so that the function status LED
indicators can be easily viewed. Tighten the lock washer to secure
the SPD.
5. If this to be a NEMA 4X enclosure, then all conduits and fitting
must be rated and properly installed such that the final
installation maintains the NEMA 4X rating.
6. Locate the neutral bar inside the electrical panel. Connect the
white or blue wire to the neutral bar and tighten to torque
specified on inside of panel. Keep conductor length as short as
possible and avoid sharp bends in the wire.
7. Locate the ground bar inside the electrical panel. Connect the
green/yellow wire to the ground bar and tighten the terminal to
the torque specified on the panel. Keep conductor length as short
as possible and avoid sharp bends. If neutral is bonded to ground,
green wire may be terminated to neutral.
8. Black or brown wires (model dependent) should be connected
to either the breaker or the bus of the panel, as long as the short
circuit current rating does not exceed 65, 100, or 200 kAIC (please
see Table 1 for kAIC rating). On High-Leg Delta units connect
the orange wire to phase B (the high-leg). If you would like to
be able to turn the unit off, then you may consider connecting it
to a breaker (# of breaker pole positions determined by the # of
black or brown wires provided with the unit). Tighten terminals to
torque specified on inside of panel. Keep lead lengths as short as
possible and avoid sharp bends.
9. Re-install panel cover.
Operation
1. Apply power to the panel. If the phase, neutral and grounding
wirings are done correctly, the green function status LEDs will
illuminate. If the LEDs do not turn on, remove the power and
review all of the previous installation procedures.
2. If the LED light (s) is extinguished, reset the breaker if the SPD
is tied to a breaker. If the LED light(s) come(s) back on then the
protector is fine. If the LEDs are still out, or you can not reset the
breaker, the protector must be replaced. This unit contains no
user serviceable parts.
Model OVRHT3B(C)502301PI is suitable for use on TN-C and TN-C-S power systems (see EN60950).
Model OVRHT3B(C)502301PJ is intended for TNS power systems, but it may be used on TN-C-S and U.S. 120/240V (without neutral) services as well.
Model OVRHT3B(C)502301PK is intended for IT systems, but with caution may be used on the above other power systems as well.
Model OVRHT3B(C)502301PL is intended for TT systems, but it may be used on TNS, TN-C-S, and U.S. (without neutral) services.
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Table 1: Upstream overcurrent protective device requirements
All units are furnished with 36" leads.
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Important safety instructions
Model number SPD type kAIC rating Upstream breaker Wire gauge
OVRHS3U series
OVRHS3U401201P 1, 2 100 Not required 14 AWG
OVRHS3U402401P 2 100 30A 14 AWG
OVRHS3U401202S 1, 2 100 Not required 14 AWG
OVRHS3U802402SR 2 100 30A 14 AWG
OVRHS3U402403D 1, 2 100 Not required 14 AWG
OVRHS3U404803D 2 65 20A 14 AWG
OVRHS3U401202S 2 65 20A 14 AWG
OVRHS3U402083Y 1, 2 100 Not required 14 AWG
OVRHS3U402773Y 2 65 20A 14 AWG
OVRHS3U402303Y 2 65 20A 14 AWG
OVRHT3B(C) series
OVRHT3B(C)50XXXXX 1 100 Not required 12 AWG
OVRHT3B(C)502301P (I,J,K,L) 1 200 Not required 12 AWG

3
OVRHS3U401201P
OVRHS3U402401P
OVRHT3B(C)501201P
OVRHT3B(C)502401P
OVRHT3B(C)502771P
OVRHT3B(C)504801P
OVRHS3U401202S
OVRHT3B(C)501202S
OVRHT3B(C)502402S
OVRHS3U402083Y
OVRHS3U402773Y
OVRHS3U402303Y
OVRHT3B(C)501203Y
OVRHT3B(C)502203Y
OVRHT3B(C)502303Y
OVRHT3B(C)502403Y
OVRHT3B(C)502773Y
OVRHT3B(C)503473Y
OVRHT3B(C)502403H
OVRHS3U402403D
OVRHS3U404803D
OVRHT3B(C)502403D
OVRHT3B(C)503803D
OVRHT3B(C)504003D
OVRHT3B(C)504153D
OVRHT3B(C)504803D
OVRHT3B(C)506003D
OVRHT3B(C)502301PI
OVRHT3B(C)502301PJ
OVRHT3B(C)502301PK
OVRHT3B(C)502301PL
Figure 4: 3-phase Delta, 3-wire
Figure 6: 1-phase, 2-wire (Earthing System)
Figure 1: 1-phase, 2-wire Figure 2: 2-phase, 3-wire
Figure 3: 3-phase Wye, 4-wire
Figure 5: 3-phase High-Leg Delta, 4-wire
Note: High-Leg Orange must be B Phase
A
3-POLE 1
CIRCUIT BREAKER
AB
BC
C
N
N
G
NG
SPD
A
C
B
G
N
EARTH
GROUND
Xo BOND
2-POLE 1
CIRCUIT BREAKER
SPD
L1
L2
G
N
EARTH
GROUND
Xo BOND
L1
N
L2
NG
L1
L2
N
G
1-POLE 1
CIRCUIT BREAKER
SPD
G
N
EARTH
GROUND
Xo BOND
L1
L1
N
N
G
NG
L
3-POLE 1
CIRCUIT BREAKER
SPD
EARTH
GROUND
Xo BOND
B
N
CA
NG
N
G
A
B
C
G
N
ABC
3-POLE 1
CIRCUIT BREAKER
B
CA
NG
SPD
A
B
C
G
ABC
G
EARTH
GROUND
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Electrical connections
Please see Table 1 for circuit breaker requirements
1-POLE 1
CIRCUIT BREAKER
SPD
G
N
EARTH
GROUND
Xo BOND
L1
L1
N
N
G
NG
L

4OVRHT3 SERIES AND OVRHS3U SERIES SURGE PROTECTIVE DEVICES
CAUTION:
Do not assume the circuit is de-energized! Remove power before
performing any maintenance to these devices.
CAUTION:
Do not splice SPD conductors within the unit’s enclosure or
manufacturer’s warranty will be void. SPD’s performance will be
limited severely if the conductors are A) too long B) are of too small
a wire gauge C) have too many bends or D) have sharp bends.
CAUTION:
Prior to installation, confirm and ensure the system configuration
and voltage rating of the surge protector being installed.
OVRHT3B mounting
Connecting the remote contacts to an alarm
(If option chosen on the OVRHS3U)
For “fail-safe” Form “C” monitoring, use the labeled Form “C” wire
outputs to the alarm detection wires. Both outputs NO or NC
are available and either can be used dependent upon Negative or
positive logic choice. Relay contacts are rated for 1A, at 150Vac or
60Vdc maximum.
Relay contacts shown in the relaxed position
(protector alarm or loss of power).
Note: Maximum torque on terminals is 10 in-lbs.
RE
M
OT
E
AL
AR
M
1
2
3
1
2
3
Protector
Service Panel Side
N
G
Electrical Service Entry
Surge
Protector
Service
Panel Side
Mounting Surface
Ground
N
G
L
Optional
Circuit
Breaker
Neutral
Bars
Optional
Circuit Breaker
N
G
Locknut
Surge Protector
Line Wire
OVRHT3C mounting
OVRHS3U mounting
Additional information
We reserve the right to make technical
changes to the product and to the
information in this document without
notice. The agreed conditions at the time
of the order shall apply. ABB assumes no
responsibility for any errors or omissions
that may appear in this document. We
reserve all rights in this document and in
the information contained therein.
Without prior written approval from ABB,
reproduction, disclosure to third parties
or use of any information, in whole or in
part, is strictly forbidden.
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Electrification Products
5900 Eastport Boulevard
Richmond, VA 23231-4453 USA
Tel: [phone]
Fax: [phone]
abb.com
© Copyright 2017 Thomas and Betts Power Solutions, LLC. All rights reserved.
Specifications subject to change without notice.
PN: 750-0122-008 A00 090617