Siemens TPS3 12, TPS3 15 user manual General Information, SPD Types

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Industry Standards Changes - 2009

UL 1449 Third Edition and 2008 NEC® Article 285 generated substantial changes.

The term TVSS changed to SPD

Types 1, 2, 3 & 4 SPDs are created

UL 1449 clamping voltage performance testing changed from 500A to 3,000A

UL 1449 added new Nominal Discharge Current testing (I nominal, or In), which consists of more rigorous duty-cycle testing

The SPD Type category is important to understand before installing any SPD. Type 1 and 2 SPDs are fully UL Listed devices whereas Type 4 SPDs are UL Recognized devices.

Type 1 – Installed on line or load side of the Main Overcurrent Protection (OCP), similar to obsolete products known as Secondary Surge Arrestors, except now includes rigorous safety testing. Includes all OCP & safety disconnectors inside the SPD.

Type 2 – Installed on load side of the Main OCP, similar to previous products known as TVSS. May or may not require external OCP. Type 3 – Point of Utilization, direct plug in type devices, surge strips, etc. Theses devices are intended for installation 10 meters from the panel (rationale based on IEEE Cat. A location).

Type 4 – Surge suppression components, could be a basic component or a complete module. Type 4 components can be tested for Type 1, Type 2 or Type 3 applications.

Figure 1: SPD Types

2008 NEC Art 285 & UL 1449-3

SPD Types: Types 1, 2, 3, & 4

Based on Location within electrical distribution system

(also coincides with ANSI/IEEE C62.41.2 - 2002 Categories C, B &A)

General Information

Product Family Outline

TPS3 12 – Single Module in enclosure

TPS3 15 – Two Modules in enclosure

Each is available with Standard modes (most common) or discrete 10-modes (specific application). For example, TPS3 12 is a SPD in an enclosure with Standard modes of protection; TPS3 L12 is a SPD with an enclosure having discrete ten mode protection.

The TPS3 12 & TPS3 15 families are intended for use as a Type 1 external mount SPD. See Model Number Decoder in Table 1 (page 3).

Type 1 SPD

Type 1 SPDs include internal overcurrent protection and have been evaluated by UL to more stringent requirements. Type 1 SPDs are suitable for installation on the line side or load side of the service disconnect overcurrent device. Type 1 SPDs may be used in Type 2 applications.

Internal Protection

This device features internal overcurrent and overtemperature protection that will disconnect effected surge suppression components at the end of their useful life, but will maintain power to the load – now unprotected. If this situation is undesirable for the application, follow these instructions for servicing or replacing the device.

Service Guidelines

Service of this unit consists of replacing the internal module(s), disconnect switch (if equipped) and/or display assembly.

There are no user-serviceable parts inside the replaceable module. Do not attempt to disassemble the module as it stores charge.

Simplified Explanation of Operation

As SPDs sense overvoltage, they create a momentary internal short circuit, thereby redirecting harmful surge energy to earth ground. SPDs are capable of repeating this function repeatedly. For optimum protection, staged surge suppression should be implemented at the service entrance and all other distribution or panelboard locations feeding sensitive equipment.

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Contents TPS3 12 & TPS3 Bonding and Grounding Hazard Table of Contents Introduction Limited WarrantySPD Types General InformationOption code / description TPS3 Surge Current Rating TPS3Parallel Connection Pre-Installation and PlanningService Clearance Weight & DimensionsCircuit Breaker and Disconnect Switch Lead Lengths & Maximizing SPD PerformanceTerminals Module Rotation FeatureGrounding conductor StepTPS3 12 and TPS3 15 Installation Instructions Electrical Drawings Shown with Surge Counter OperationDry Contact Connection Configuration MaintenancePage 17.11.jb #8172