GE Industrial Solutions A-Series 9îand 24î User Manual
GE Digital Energy
Power Quality
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
GE A-Series 9”and 24” Panel Box Extensions Equipped With
GE TR7000 Enhanced Thermal Protection (ETP) Series
High and Medium Exposure Surge Protective Devices (SPDs)
2020000604 (12/09) Page 1 of 15
TABLE OF CONTENTS
IMPORTANT NOTICE………………………………………………………………………………………………………………………………………..3
Transformer X0 Bond Warning Statement………………………………………………………………………………..3
PRODUCT DESCRIPTION…………………………………………………………………………………………………….…….…………………….4
APPLICATION GUIDELINES…………………………………………………………………………………………………….………….….……….4
SPD Type…………………………………………………………………………………………………………………………………………….4
Maximum Continuous Operating Voltage (MCOV)……..……………………………………………..…………….5
Electrical System Configuration…………………………………………………………………………….………….……..….5
Peak Impulse Rating………………………………………………………………………………………………………………….…….5
UL 1449 Nominal Discharge Current (In)……………………………………………………………………………………5
Short Circuit Current Rating…………………………………………………………………………………………………….…….5
Environmental Ratings……………………………………………………………………………………………………………………5
PRE-INSTALLATION REQUIREMENTS………………………………………………………………………………………………….……….6
System Configuration and Voltage……………………………………………………………………………….…………….6
System Grounding and Bonding……………………………………………………………………………..……….….………6
SPD Installation on Ungrounded Power Systems……………………………………………………………………6
SPD Location / Primary Overcurrent Protection…………………………………………………..…………..……..6
VOLTAGE RATINGS AND POWER SOURCE CONFIGURATIONS………………………………….………..………………..7
NEC COMPLIANT GROUNDING AND BONDING EXAMPLE…………………………………………………………...……….8
INSTALLATION…………..………………………………………………………………………………………………………………………..……………9
Mounting……………………………………….……….……………………..……………………………………………………….…………..9
Power Connections …………………………………………………………………………………………………………………………9
Wire Routing ……………………………………………………………………………………………………………………………………..9
Circuit Breaker ………………………………………………………………………………………………………………………………….9
Remote Alarm Contacts…………………………………………………………………………………………………….……………9
Pre-Energization Check………………………………………………………………………………………………………..…………9
POWER TERMINALS AND REMOTE ALARM LOCATION DIAGRAM…………………………….………..………..……10
BX9 TYPE INSTALLATION………………….………………………………………………………………………………………………………….11
BX24 TYPE INSTALLATION………………….……………………………………………………………………………………………………….11
OPERATION……………….……………..…………………………………………………………………………………………………….……………….13
Line Status Indicators……………………………………………………………………………………………………………………13
Alarm Status Indicators………………………………………………………………………………………………………………..13
Remote Alarm Contacts……………………………………………………………………………………………………………….13
Test / Enable / Disable Switch…………………………………………………………………………………………………….14
Surge Counter LCD……………………………………………………………………………………………………………………..…14
MAINTENANCE………………………………………………………………………………………………………………………………..…………..…14
SERVICING / TROUBLESHOOTING…………………………………………………………..……………………………………..………...14
2020000604 (12/09) Page 2 of 15
IMPORTANT NOTICE
Y THAT A PROPER
HEN POWER IS
ANY OTHER
30
ULT IN ELEVATED
S. THESE
EQUIPMENT AS
LECTRICAL SHOCK,
THE ENTIRE CONTENT OF THIS MANUAL MUST BE READ AND FULLY UNDERSTOOD
BEFORE ATTEMPTING ANY INSTALLATION OR ENERGIZATION OF THE SPD.
If there are any questions about the operational status, or integrity of the electrical system prior to
installation of the SPD, please consult a qualified trained electrician before attempting to continue.
If the minimum requirements of this manual are not followed, the SPD could become irreversibly
damaged, and/or the electrical system and connected loads could be left unprotected.
Choosing the right product for the application, along with correct installation methods, as defined
within this manual, will allow the GE TR7000 SPD to provide the best possible protection for many
years.
Failure to comply with the applicable requirements of this manual can void the SPD warranty.
SPECIAL ATTENTION MUST BE GIVEN TO VERIF
NEUTRAL-GROUND (XO) BOND HAS BEEN MADE W
SUPPLIED FROM AN UPSTREAM TRANSFORMER OR
TYPE OF SEPARATELY DERIVED POWER SOURCE.
FAILURE TO PROVIDE THIS BOND, AS REQUIRED PER ARTICLE 250.
OF THE NATIONAL ELECTRICAL CODE, CAN RES
PHASE TO GROUND SOURCE VOLTAGE POTENTIAL
VOLTAGES CAN CAUSE DAMAGE TO ELECTRICAL
WELL AS SAFETY HAZARDS INCLUDING FIRE, E
SERIOUS INJURY, OR DEATH.
WARNING
2020000604 (12/09) Page 3 of 15
PRODUCT DESCRIPTION:
GE TR7000 Enhanced Thermal Protection (ETP) Series Type 1 and Type 2 Surge Protective Devices
(formerly called TVSS), are designed for installation on low voltage electrical distribution systems.
GE SPDs are designed to protect electrical equipment loads against the damaging effects of
transient voltages that can be induced or generated as a result of remote lightning, power
equipment switching or high frequency disturbances.
All GE TR7000 ETP Series SPDs incorporate Metal Oxide Varistor (MOV) technology to achieve
superior transient suppression performance. Integral to each MOV is a unique Thermal
Protection System that provides effective circuit interruption in the event of an abnormal phase
overvoltage condition. Other standard features include protection status indicating lights, an
audible alarm with test and disable features, form C alarm contacts for remote monitoring, a
surge event counter, and built in EMI filtering. A surge rated disconnect switch is provided on
select models.
The GE TR7000 SPD units described in this manual are enclosed in GE A-Series Panelboard Box
Extension Enclosures and are UL/cUL Listed, conforming to UL 1283 and UL 1449 3rd Edition
where applicable. All published ratings are in accordance with ANSI / IEEE C62.41.1-2002,
C62.41.2-2002 and NEMA LS1-1992 (R2000) recommended guidelines.
Model covered by this manual are:
GE TR7000, UL Type 2 model types ending with the part number suffix of BX9S, BX9WS, BX9F,
BX9WF, BX24WF or BX24WS. (Example: TPR7277Y20BX24WS)
Model types are also available in a UL Type 1 rating. These models will be labeled with part
number suffixes of BX9ST1, BX9WST1, BX9FT1, BX9WFT1, BX24WFT1 or BX24WST1.
APPLICATION GUIDELINES:
Determining the surge protection to be provided in a facility or for a particular system or
equipment can be a complex task that should be addressed as early as possible. This is typically
when a new facility is constructed or sensitive electronic equipment has been installed. The
following guidelines are offered for application assistance:
Prior to installing any SPD, 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.
Utilize the personnel from your local utility, your engineering department, GE application or
service engineering, or a professional consulting engineering firm for technical guidance or
troubleshooting.
Understand your system, and the capabilities and limitations of SPD and other power
conditioning equipment.
Select the proper GE TR7000 Series SPD unit for your system voltage, configuration, and the
anticipated surge environment. Some of the key parameters for selection are defined below:
SPD TYPE
The SPDs covered in this document are rated and marked accordingly for use on Type 1 or Type 2
applications. Type 1 SPDs can be installed on either line or load side of the electrical distribution
system’s main breaker or fuse. Type 2 SPDs can be installed only on the load side.
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MAXIMUM CONTINUOUS OPERATING VOLTAGE (MCOV)
This value defines the maximum line-to-line or line-to-neutral continuous AC voltage that can be
safely applied to the protector. MCOV levels for GE TR7000 Series SPDs are set at 115% of nominal
system voltage. For 120-volt AC systems, the MCOV is 125%. If there is a risk that the electrical
system voltage could exceed MCOV, or if any unusually high power frequencies, Temporary Over
Voltages (TOV), or phase swells are anticipated, contact your GE Sales Engineer for further
assistance.
ELECTRICAL SYSTEM CONFIGURATION
Protectors are available for single (split) phase with neutral and ground, three-phase grounded WYE,
three-phase ungrounded WYE, three-phase high-leg delta, and for three-phase ungrounded delta
systems. (See page 7 for power source configurations)
PEAK IMPULSE RATING
Peak surge current capability is an important characteristic for a SPD. The rating per mode should
equal or exceed the maximum surge expected in service. GE TR7000 SPDs are available in
maximum surge ratings of 65kA, 80kA, 100kA, 125kA, 150kA, 200kA and 300kA.
UL 1449 NOMINAL DISCHARGE CURRENT (In)
The UL Nominal Discharge Current (In) rating should be considered when an SPD is selected for use
within a UL96A Lightning Protection System. UL96A requires a Nominal Discharge Current (In)
rating of 20kA for Type 1 or Type 2 SPDs.
SHORT CIRCUIT CURRENT RATING
GE TR7000 type SPD units with surge ratings of 125kA to 300kA per mode are UL certified for use on
electrical systems with rated ampacities up to 200,000 symmetrical amperes maximum. TR7000
type SDP units with surge ratings of 65kA to 100kA are UL rated for systems up to 100,000 A.
ENVIRONMENTAL RATINGS
The SPD is provided in a NEMA 1 Rated Panelboard extension enclosure and is designed to operate
within an ambient temperature range of –40oC to 65oC (-40oF to 149oF) with a relative humidity
level between 0-95% non-condensing.
A direct lightning strike, that occurs within close proximity of an installed SPD, can result in
surge currents that exceed the SPD’s energy handling capability. This can result in reduced
life expectancy or pre-mature failure of the SPD. Electrical power system supply voltages in
excess of the SPD MCOV rating, can also cause SPD failure.
Should a condition occur that results in premature failure of the SPD, the suppression
circuitry will short, thereby allowing the integral SPD fusing to interrupt current flow without
disrupting power to the connected loads. However, after SPD failure, the load equipment will
remain unprotected from subsequent surge activity until the SPD is replaced.
Increased rate of rise or higher surge current magnitudes can result in increased surge let-
thru levels due to the non-linear clamping characteristics of SPDs. Conditions can occur
where the surge withstand capability of the protected equipment is exceeded even though
the SPD is functioning properly. In such cases, additional SPDs may be required, located
closer to the sensitive load(s). (For additional information, refer to Standard IEEE 1100-2005,
Section 3.4.3)
GE TR7000 ETP Series WYE-connected SPDs have both normal mode (L-N, L-L) and common
mode (L-G, N-G) protection. Protection between neutral and ground is provided on units
designed for WYE-connected applications.
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