GE Industrial Solutions Tranquell Series User Manual
Installation Instructions
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
INSTALLATION INSTRUCTIONS:
Pro-Stock Panelboards with
TRANQUELL
Medium Exposure Transient Voltage Surge Suppressor
IMPORTANT NOTICE
THE ENTIRE CONTENT OF THIS MANUAL MUST BE READ AND FULLY
UNDERSTOOD BEFORE ATTEMPTING ANY INSTALLATION OF THE TRANQUELL
SERIES TVSS.
If there are any questions about the operational status, or integrity of the electrical system prior
to installation of the TVSS, please consult a qualified trained electrician before attempting to
continue.
If the minimum requirements of this manual are not followed, the TVSS could become
irreversibly damaged, and/or the electrical system could be left unprotected.
Choosing the right product for the application, along with correct installation methods, as
defined within this manual, will allow the Tranquell TVSS to provide the best possible protection
for many years.
Failure to comply with the applicable requirements of this manual can void the TVSS warranty.
SPECIAL ATTENTION MUST BE GIVEN TO VERIFY THAT A PROPER
NEUTRAL-GROUND (XO) BOND HAS BEEN MADE WHEN POWER IS
SUPPLIED FROM AN UPSTREAM TRANSFORMER OR ANY OTHER
TYPE OF SEPARATELY DERIVED POWER SOURCE.
FAILURE TO PROVIDE THIS BOND, AS REQUIRED PER ARTICLE
250.30 OF THE NATIONAL ELECTRICAL CODE, CAN RESULT IN
ELEVATED PHASE TO GROUND SOURCE VOLTAGE POTENTIALS.
THESE VOLTAGES CAN CAUSE DAMAGE TO ELECTRICAL
EQUIPMENT AS WELL AS SAFETY HAZARDS INCLUDING FIRE,
ELECTRICAL SHOCK, SERIOUS INJURY, OR DEATH.
2020000903 (10/04) Page 1 of 9
Installation Instructions
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
NEC Grounding arrangement for a separately derived system in which the
grounding electrode conductor connection is made at the transformer
PHASE C
PHASE B
PHASE A
NEUTRAL
X3
X2
GROUND
Equipment Grounding
Conductor Ref. NEC
250.32 (B) (1)
NEC Grounding arrangement for a separately derived system in which the
grounding electrode conductor connection is made at the first disconnecting means
X3
X0
X1
Bonding Jumper
Ref. NEC 250-30 (a) (1)
X2
Grounding Electrode
Conductor Ref. NEC
250.62 - 250.64 - 250.66
Grounding Electrode
Ref. NEC 250-30 (a) (4)
PHASE C
PHASE B
PHASE A
NEUTRAL
N
Primary Dist.
Panel w/Overcurrent
or Service Disconnect
Means
Note:
Primary transformer windings
not shown for simplicity
G
N
Primary Dist.
Panel w/Overcurrent
or Service Disconnect
Note:
Primary transformer windings
not shown for simplicity
G
Means
Equipment Grounding
Conductor Ref. NEC
250.32 (B) (1)
X1
X0
Bonding Jumper
Ref. NEC 250-30 (a) (1)
Grounding Electrode
Conductor Ref. NEC
250.62 - 250.64 - 250.66
Grounding Electrode
Ref. NEC 250-30 (a) (4)
2020000903 (10/04) Page 2 of 9
Installation Instructions
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
THE EQUIPMENT COVERED BY
THESE INSTRUCTIONS SHOULD BE
INSTALLED AND SERVICED ONLY
BY COMPETENT PERSONNEL
UTILIZING PROPER SAFETY
PRACTICES AND PROCEDURES.
THESE INSTRUCTIONS ARE
WRITTEN FOR SUCH PERSONNEL
AND ARE NOT INTENDED AS A
SUBSTITUTE FOR ADEQUATE
TRAINING AND EXPERIENCE IN
SAFE PROCEDURES FOR THIS TYPE
OF EQUIPMENT.
PRODUCT DESCRIPTION:
GE TRANQUELL TVSS models are
Transient Voltage Surge Suppressors
(TVSS), which provide metal oxide varistor
protection in each mode, combined with
thermal fuses, surge-rated fuses, indicating
lights, an audible alarm with test and disable
features, Form C contacts for remote
monitoring, surge counter, built in EMI
filtering. The units described in this manual
are intended solely for installations in GE
Pro-Stock Panels installed on low voltage
electrical distribution systems. The TVSS is
UL and cUL Listed E108159, conforming to
UL standards 1283 and 1449 Second
Edition, August 15, 1996. All ratings are in
accordance with ANSI / IEEE C62.41-1991
and NEMA LS1-1992 recommended
practices.
APPLICATION GUIDELINES:
Determining the surge protection to be
provided in a facility or for a particular
system or equipment can be a complex
problem which should be addressed as
early as possible, such as when a facility is
constructed or sensitive equipment is
installed. The following guidelines are
offered for application assistance.
1. Ensure that your facility electric supply
system is properly installed and
connected in accordance with all
applicable national and local codes and
safety procedures. All equipment and
systems should be installed in
accordance with manufacturer’s
instructions.
2. Utilize the personnel from your local
utility, your engineering department, GE
application or service engineering, or a
competent consulting engineering firm
for technical guidance or
troubleshooting.
3. Understand your system, and the
capabilities and limitations of surge
protectors and other power conditioning
equipment.
4. Select the proper TRANQUELL Medium
or High Exposure Series unit for your
system voltage, configuration, and the
anticipated surge environment.
MCOV (Maximum Continuous
Operating Voltage)
This value defines the maximum line-toline or line-to-neutral continuous voltage
to be applied to the protector. MCOV
values for Tranquell Series TVSS are
set at 115% of nominal system voltage.
For 120-volt systems, the MCOV is
125%. If sustained voltage could
exceed MCOV, or if any unusually high
power frequencies or Temporary Over
Voltages (TOV) are anticipated, contact
your GE Sales Engineer for assistance.
Configuration
Protectors are available for single phase
with neutral and ground, for three-phase
wye with neutral and ground, or for
three-phase delta with ground. (See
figure 1)
Connections
Where applicable, it is important to
minimize lead lengths to the TVSS for
optimum protection. Larger wire sizes
2020000903 (10/04) Page 3 of 9
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