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
Installation Instructions
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
and twisting the phase, neutral and
ground conductors together will further
enhance the level of protection. The
minimum required installation wire size
for the TRANQUELL TVSS is 6-awg.
Direct bus connections are to be made
with the appropriate hardware and
torqued to 110 inch-pounds.
Peak Impulse Rating
Peak surge current capability is an
important characteristic for a TVSS.
The rating per mode should equal or
exceed the maximum surge expected in
service.
5. No protector can survive a direct
lightning strike. A strike close to any
protector, which subjects the device to
surge current or energy duty in excess
of its capability, can also fail the
protector. Supply voltages in excess of
the Maximum Continuous Operating
Voltage capability, or temporary over
voltages which exceed the magnitude or
duration of the protector’s Temporary
Over Voltage characteristics, can fail the
unit.
6. Should an abnormal condition occur that
causes premature failure of the
Tranquell TVSS, the suppression
circuitry will short allowing the integral
TVSS fusing to interrupt current flow to
the TVSS without disrupting power to
the protected equipment.
IN THE EVENT OF A BLOWN FUSE,
DO NOT ATTEMPT TO REPLACE THE
FUSE. THE PRO-STOCK SERIES
TVSS CONTAINS NO USER
SERVICABLE PARTS. THE ENTIRE
UNIT MUST BE REPLACED.
7. Increased rate of rise and higher surge
current magnitudes both result in some
increase in discharge voltage.
Conditions can occur where the
withstand capability of the protected
equipment is exceeded even though the
surge protector is doing its job and
clamping the surge. In these cases
additional low voltage protection may be
required, located as close as possible to
the sensitive equipment.
8. TRANQUELL Series wye-connected
TVSS units have both normal mode
(line-to-neutral and line-to-ground) and
common mode (neutral-to-ground)
protection. Protection between neutral
and ground is provided on units
designed for wye-connected
applications. On grounded neutral
systems, common mode protection is
needed if the neutral-to-ground bond is
made more than 10 feet from the surge
protector. This will minimize neutral-toground potential during a transient,
avoiding high transient voltages, which
could reduce protection and cause
possible damage to the system or to the
equipment. Common mode protection
may also be used when the neutral-toground bond is within 10 feet.
TRANQUELL Series delta-connected
units have normal mode (line-toground) protection.
9. Should an abnormal condition occur that
causes premature failure of the
Tranquell TVSS, the suppression
circuitry will short allowing the integral
TVSS fusing to interrupt current flow to
the TVSS without disrupting power to
the protected equipment.
2020000903 (10/04) Page 4 of 9
Installation Instructions
A C N
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
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TTMMEE 227777YY
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TTMMEE 448800DD
TTMMEE 660000DD
TTMMEE 224400HH
VOLTAGE RATINGS & POWER SOURCE CONFIGURATIONS
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((5500//6600HHzz))
112200//220088--224400VV
112200//220088VV
222200//338800VV
224400//441155VV
227777//448800VV
334477//660000VV
224400VV
448800VV
660000VV
112200//224400VV
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SSiinnggllee PPhhaassee,, 33WW++GG
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TThhrreeee PPhhaassee DDeellttaa HHii--LLeegg,,
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Figure 1
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2020000903 (10/04) Page 5 of 9
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
AND LOCAL ELECTRICAL
THE RATINGS ARE APPR
OPRIATE FOR THE INST
ALLATION.
INSTALLATION
Installation Instructions
POWER MUST BE PROVEN DISCONNECTED BEFORE STARTING INSTALLATION,
INSPECTION OR MAINTENANCE! FAILURE TO DO SO MAY CAUSE SERIOUS
INJURY, DEATH AND/OR PROPERTY DAMAGE.
THIS TVSS DEVICE MUST BE INSTALLED IN ACCORDANCE WITH ALL NATIONAL
1. TRANQUELL Pro-Stock Series TVSS
are designed to be installed inside GE
Pro-Stock Series electrical service
panels. These instructions shall be
considered as the general guidelines to
insure that the TVSS is installed safely,
while providing the maximum amount of
surge protection available. Before
making connections to the unit, verify
that the unit model number, voltage
rating and ampere ratings are
appropriate for connection to the
intended power source.
2. Although the TVSS is rugged,
reasonable care must be taken to avoid
damage to the unit during handling and
installation.
3. TRANQUELL Pro-Stock Series TVSS
units are suitable for installations on
supplies capable of delivering up to
65,000 symmetrical rms amperes. Refer
to the TVSS nameplate label for this
rating. The TVSS should always be
installed on the protected side of the
main overcurrent protector.
CODES. REFER TO THE NAMEPLATE TO VERIFY THAT
5. The Pro-Stock Series TVSS comes
factory equipped with a #6 AWG white
neutral conductor (except for delta
configurations). This wire should be
trimmed and connected to the panel
neutral bus using as minimal amount of
length as possible. TVSS wiring
installations should also be such that
sharp bends are avoided. Excessive
wire length, sharp wire angles, and poor
wire connection joints will degrade the
performance of the TVSS significantly.
6. A 3-conductor cable (Figure 3) is
provided to connect remote status
monitoring equipment. Fast-on
terminals are labeled COM (common),
NO (normally open), and NC (normally
closed). The contacts are dry, 1 Form C
type, rated 125VAC, 2A maximum.
7. When energized the power panel will
now have surge-suppressed and EMIfiltered power.
4. Extreme care must be taken to ensure
that power wiring connections are
correct, and that sound neutral and
ground locations are provided.
Improper connections may result in
higher transient voltages, which could
result in damage to the system and/or to
the equipment being protected. (Refer
to Figure 2 for wire connection
locations.) These locations are also
marked on the TVSS unit.
2020000903 (10/04) Page 6 of 9
Installation Instructions
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
FFiigguurree-
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2020000903 (10/04) Page 7 of 9
-33
Installation Instructions
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
Installing TRANQUELL Medium Exposure Transient Voltage Surge
Suppressors into Pro-Stock Panelboards:
The Pro-Stock Transient Voltage Surge Suppressor (TVSS) is a TRANQUELL Medium
Exposure Transient Voltage Surge Suppressor designed for mounting into a Pro-Stock
Panelboard.
1. The display assembly must be removed from the MOV enclosure assembly in order to
install the MOV enclosure assembly to the mounting channel.
2. Mount the TRANQUELL Medium Exposure TVSS MOV enclosure assembly to the
mounting channel using the screws provided in the hardware kit. Remove any shield
supports that interfere with this installation. Torque mounting screws to 28 inch-pounds.
3. Connect the TRANQUELL Medium Exposure Transient Voltage Surge Suppressor
busbars to the panelboard busbar studs using the flange-nuts provided in the hardware
kit as shown in the figure. Torque flange-nuts to 110 inch-pounds.
4. Connect the neutral conductor to the panel neutral bus (in a non-delta system).
5. Mount the TVSS display assembly to the MOV enclosure assembly using the spring-
loaded plunger provided in the display assembly as shown in the figure (See Detail).
Adjust height and orientation as required. Connect the cable from the display assembly
to the MOV enclosure assembly.
6. Connect the surge counter sensitivity cable to achieve the desired setting.
7. Install wiring to remote alarm contacts.
8. Mount the Deadfront over the Transient Voltage Surge Suppressor display assembly
using the screws provided with the hardware kit.
Figure Showing the BOTTOM FEED Pro-Stock Panelboard
2020000903 (10/04) Page 8 of 9
Installation Instructions
or
maintenance. Should further information
Pro-Stock Panelboards with TRANQUELL Medium Exposure TVSS
OPERATION
POWER MUST BE PROVEN
DISCONNECTED BEFORE INSPECTION
OR MAINTENANCE IS ATTEMPTED.
FAILURE TO DO SO MAY CAUSE
SERIOUS INJURY, DEATH AND/OR
PROPERTY DAMAGE. THE TRANQUELL
PRO-STOCK SERIES TVSS CONTAINS
NO USER SERVICEABLE PARTS.
The TRANQUELL Series TVSS is a solidstate device that utilizes ZnO varistors.
There are no gaps, no moving parts.
When the TVSS is in service under normal
conditions, the green LED indicating lights
are illuminated to indicate that the fuses are
not blown and surge protection is active.
The surge counter will sense and record
transient activity via a current transformer in
the neutral circuit (for delta configurations,
the ground circuit). The counter may be
reset to zero if desired.
A fuse will blow if the surge protector fails
shorted. Whenever the TVSS indicates an
alarm condition, it is recommended that the
protection module be replaced. Always
check the system for overvoltage conditions
before installing a new surge protector.
Should a fuse blow, its corresponding green
indicating LED will extinguish, the red alarm
LED will illuminate, the audible alarm will
sound, and the remote contacts will indicate
this change of status. The audible alarm
can be silenced by pressing the switch into
the DISABLE position. The red alarm LED
will continue to be illuminated after the
audible alarm is disabled.
The alarm functions may be tested by
pressing the switch to the TEST position.
This TEST position is intended for
momentary use only.
GE Consumer & Industrial
GE Zenith Controls
2501 Pecan Street
Bonham, Texas 75418 USA
These instructions do not purport to
cover all details or variations in
equipment nor to provide for every
possible contingency to be met in
connection with installation, operation,
be desired or should particular problems
arise which are not covered sufficiently
for the purchaser's purposes, the matter
should be referred to the GE Company.
TRANQUELL and Pro-Stock are
registered trademarks of General Electric
Company
2020000903 (10/04) Page 9 of 9
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