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Introduction
Thank you for choosing a Siemens TPS3 09 Surge Protective
Device (SPD). It is a high quality, high energy surge suppressor
designed to protect sensitive equipment from damaging
transient overvoltages. TPS3 09 is parallel connected such that
circuit ampacity is unlimited. Proper installation is important to
maximize performance. Please follow steps outlined herein. This
entire Operation and Maintenance Manual should be read prior
to beginning installation. These instructions are not intended to
replace national or local codes. Follow all applicable electrical
codes to ensure compliance. Installation of this SPD should only
be performed by qualified electrical personnel.
Siemens SPDs are extensively tested in accordance with industry
standards such as ANSI/IEEE C62.41.1, C62.41.2, C62.45, C62.62,
C62.72, UL1449, UL 1283, IEC 61643, CSA C22.2 No. 269, etc.
WARNING
V
Hazardous Voltage & Shock Hazard
• Only qualified licensed electricians should install or service
SPDs.
• SPDs should never be installed or serviced when energized
or during electrical storms.
• Use appropriate safety precautions including Personal
Protection Equipment.
• Failure to follow these instructions can result in death,
serious injury, and/or equipment damage.
• When used in outdoor applications, customer must seal the
conduit nipple using watertight fittings (not included) to
ensure a watertight connection.
• Read this manual in entirety prior to installing.
Industry Nomenclature Changes
In the late 2000's, there were significant nomenclature changes
associated with a revision to UL 1449 and 2008 NEC® Article 285.
TPS3 09 complies with the latest regulatory actions and is UL 1449
& CSA 22.2 No. 269, Listed as such (VZCA.E321351). There is an
emphasis on installation location, identified as Types 1, 2 and 3,
outlined below.
Type 1 SPD: Installation on the line side or load side of the service
disconnect overcurrent device. Type 1 SPDs may be used in Type
2 installations. Examples: surge arrestors, lightning arrestors,
meter hubs, metering cabinets, ran out of breaker positions, etc.
Type 2 SPD: Downstream of service disconnect; probably will
connect via breaker. Examples: switchboards, power panels,
panelboards, equipment, motors, pumps, etc.
Type 3 SPD: Point of Use SPD, sometimes plug-connected SPD.
Type 4 SPD: Has different contexts in UL 1449 and CSA 22.2 No.
269. Call for assistance.
Figure 1: SPD Types - NEC® Article 285 & UL 1449-4
SPD Types: Types 1, 2, & 3
Based on Location within electrical distribution system
(also coincides with ANSI/IEEE C62.41.2 - 2002 Categories C, B & A)
The TPS3 09s are available as Type 1 or Type 2 SPDs per UL 1449
and CSA 22.2 No. 269. (Construction is identical for Type 1 and
Type 2 Model 425s.) Type 1 SPDs are evaluated more rigorously
by UL 1449 for NEC® Article 285 and CEC compliance. Type 1
SPDs and their connecting leads have been evaluated for line
side applications without need for supplemental overcurrent
protection. Type 1 SPDs include internal overcurrent protection.
As a generalization, it is more practical to install SPDs on the load
side of the main overcurrent protection device for maintenance
and serviceability reasons. When connected on load side of main
disconnect, we suggest connecting via a 30A circuit breaker due
to 10 AWG conductors. The circuit breaker serves as a disconnect
switch and provides NEC® imposed short circuit protection to the
conductors in Type 2 applications. A change in the 2014 NEC® Ten
Foot Tap Rule may be useful in certain applications: 240.21(B)(1)
(1)b Exception:
" When listed equipment, such as a surge protective
devices(s) [SPD(s)], is provided with specific instructions
on minimum conductor sizing, the ampacity of the tap
conductors supplying that equipment shall be permitted to
be determined based on the manufacturer's instructions."
TPS3 09 SPDs have demonstrated 200kA Short Circuit Current
Ratings (SCCR). 120V and 120/240V Model 425s have demonstrated
100kA SCCRs. Confer to label on unit.
Simplified Explanation of Operation
SPDs sense overvoltage and create a momentary low impedance
path to redirect harmful surge energy. They reset automatically
and wait for the next surge. This is similar to the pressure relief
valve on a water heater: pressure goes up, valve opens to relieve
pressure and then resets. In an electrical system, an SPD senses
overvoltage, reduces impedance which equalizes damaging
voltages and then resets. SPDs are capable of repeating this
function thousands of times.
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