Siemens TPS3A09 사용자 설명서 - 페이지 3

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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

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.