GE Industrial Solutions Tranquell Series Medium and High - Manual (Page 4)

2020000604 (12/09) Page 4 of 15
PRODUCT DESCRIPTION:
GE Tranquell 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 Tranquell 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 Tranquell 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 3 rd 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 Tranquell TPME and TPHE, UL Type 2 model types ending with the part number suffix of BX9S,
BX9WS, BX9F, BX9WF, BX24WF or BX24WS. (Example: TPHE277Y20BX24WS)
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 Tranquell Series SPD unit for your system voltage, configuration, and
the anticipated surge environment. Some of the key parameters for selection are defined
below:
 SPD T YPE
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.