GE Industrial Solutions GE TR7000 Series - Manual (Page 4)

2020004602 (12/10) Page 4 of 17
PRODUCT DESCRIPTION:
GE TR7000 Series are Type 2 Surge Protective Devices (formerly called TVSS), 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.
The TR7000 Series SPDs incorporate Metal Oxide Varistor (MOV) technology to achieve superior
transient suppression performance. Integral to the SPD is a patented thermal fusing system that
offers SPD circuit interruption in the event of an abnormal phase overvoltage condition. Other
standard features include surge rated fuses, 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 comes standard on select
models.
The GE TR7000 SPD units described in this manual are enclosed, wall mounted styles that 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:
TR7000 model types ending with the part number suffix of WMN1D, WMN12S, WMN12F, WMN4D,
WMN4S and WMN4X. (Example: TR7277Y200WMN12S)
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 T YPE
The SPDs covered in this document are rated and marked accordingly for use on Type 2
applications. Type 2 SPDs can be installed only on the load side of the electrical distribution
system’s main breaker or fuse.