ERICO TDS150-1SR Series

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INSTRUCTION SHEET

DANGER

ELECTRICAL SHOCK OR BURN HAZARD. HAZARDOUS VOLTAGES EXIST INTERNAL TO THE TDX. THIS

UNIT SHOULD BE INSTALLED AND SERVICED ONLY BY QUALIFIED PERSONNEL IN CONFORMANCE

WITH ALL GOVERNING CODES AND INSTRUCTIONS. FAILURE TO LOCKOUT ELECTRICAL POWER DURING INSTALLATION OR MAINTENANCE CAN RESULT IN FATAL ELECTROCUTION, SEVERE BURNS,

OR OTHER INJURIES. BEFORE WORKING WITH OR MAKING ANY CONNECTIONS TO THIS DEVICE, BE SURE THAT POWER HAS BEEN REMOVED FROM ALL ASSOCIATED WIRING, ELECTRICAL PANELS,

AND OTHER ELECTRICAL EQUIPMENT.

1. The power supply to the TDX should always be turned (and locked) OFF before the unit is accessed for any reason.

2. Prior to installation, ensure that the TDX is of the correct voltage, current, phasing, and frequency for the applicable rating of the power distribution system.

3. This unit must be installed on the load side of the main over-current protection.

4. Diagrams are for reference only. Schematics are representative of typical applications and are only to be used for reference.

WARNING

1. ERICO products shall be installed and used only as indicated in ERICO product instruction sheets and training materials. Instruction sheets are available at www.erico.com and from your ERICO customer service representative.

2. ERICO products must never be used for a purpose other than the purpose for which they were designed or in a manner that exceeds specified load ratings.

3. All instructions must be completely followed to ensure proper and safe installation and performance.

4. Improper installation, misuse, misapplication or other failure to completely follow ERICO’s instructions and warnings may cause product malfunction, property damage, serious bodily injury and death.

SAFETY INSTRUCTIONS: All governing codes and regulations and those required by the job site must be observed. Always use appropriate safety equipment such as eye protection, hard hat, and gloves as appropriate to the application.



CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH and LENTON are registered trademarks of ERICO International Corporation

TECHNICAL SUPPORT: IPCR1502 REV. 5 1 of 2 IPCR1502_5.DOC

www.erico.com 11/7/2005 ESN12623

1. PREPARATION

DANGER:

Electrical shock or burn hazard. Qualified personnel

should only install this product. Failure to lockout electrical power

during installation or maintenance can result in fatal electrocution or

severe burns. Before making any connections to this electrical

panel please ensure that power has been removed from all

associated wiring, electrical panels, and other electrical equipment.

CAUTION NOTES:

1. The installation of this Transient Discriminating Surge Diverter

(TDS) should follow all applicable national electrical codes.

2. Check to ensure that the power frequency line voltage does

not exceed the maximum continuous operating voltage (Uc) of

the TDS.

3. Prior to installation, ensure that the TDS is of the correct

voltage, current, and frequency.

4. The ground (earth) terminal must be connected to a low

impedance earth (<10 ohms) for correct operation.

5. Do not perform a “Flash Test” or use a Megger to test circuits

that are protected with these TDS units. This may damage the

TDS(s) and affect the insulation readings being performed.

6. Follow all instructions to ensure correct and safe operation and

observe nationally recognized codes of authorities having

jurisdiction.

7. Do not attempt to open or tamper with the TDS unit in any way

as this may compromise performance and will void warranty.

2. INTRODUCTION

The Transient Discriminating Surge Diverter (TDS) series has been

designed to provide one mode of protection to single-phase power

distribution systems (TDS150 or TDS1100), multi-modes in a split

phase distribution system (TDS50) or in a three-phase distribution

system (TDS350). Units can be connected (L-N), (L-G) or (N-G)

depending on the type of power distribution system.

Multiple TDS units can be used to provide multi-modes of

protection or to protect three-phase distribution systems.

TDS units are available with maximum continuous operating

voltages (Uc) of: 170V, 275V, 320V and 610V for the protection of

distribution systems with nominal RMS voltages of 120Vac,

220Vac, 240Vac and 480Vac, respectively. TDS units may also be

used to protect DC power systems – ref. Table 1.

3. QUICK INSTALLATION OVERVIEW

Please follow the sequence indicated:

First, ensure that power is removed from the area and the

circuits to be connected.

Install earth leakage protection (RCD) if appropriate or where

required by national codes and authorities having jurisdiction.

Note: When connecting surge protection L-

G it is preferable to

install the device before the RCD to avoid “nu

isance tripping”

which may occur when the SPD operates.

3. Connect wiring to the two primary terminals indicated.

4. Connect the alarm terminals if remote monitoring is required.

Apply power and observe correct operation of the TDS and

status indication is not tripped.

4. MOUNTING

TDS’s are designed to clip to 35mm (top hat) DIN rails (standard

EN50022) set in the horizontal position with the TDS securing clips

towards the bottom of the rail and the label text facing the correct

way up.

NOTE: TDS modules must be installed in an enclosure or switch

board panel in such a way that :

PRODUCT SERIES

TDS150-1SR-xxx

TDS1100-1SR-xxx

TDS350-xxx-xxx

TDS50 120/240

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Summary

Preparation

Introduction

Quick Installation Overview

Ensure Power Removal

Ensure power is removed from the area and circuits prior to connection.

Install Earth Leakage Protection

Install RCD if required by national codes to avoid nuisance tripping.

Connect Primary Terminals

Connect wiring to the two primary terminals indicated for operation.

Connect Alarm Terminals

Connect alarm terminals if remote monitoring is required.

Apply Power and Observe Operation

Apply power and check TDS operation and status indication.

Mounting

Electrical Connection

Wiring

Residual Current Detectors (RCD)

Fusing and Isolation

Status Indication

Maintenance & Testing

Remote Status

The Transient Discriminating Surge Diverter (TDS) series is engineered to provide robust protection for various power distribution systems. These units are designed to safeguard single-phase, split-phase, and three-phase power distribution systems against transient voltage events. Depending on the specific model, TDS units can be configured for single-phase protection (TDS150 or TDS1100), multi-mode protection in split-phase systems (TDS50), or comprehensive protection in three-phase systems (TDS350). Their versatility allows for connection in various configurations, including Line-to-Neutral (L-N), Line-to-Ground (L-G), or Neutral-to-Ground (N-G), adapting to the specific requirements of the power distribution system.

Multiple TDS units can be deployed to achieve multi-mode protection or to protect complex three-phase distribution systems effectively. The TDS series is compatible with a range of nominal RMS voltages, including 120Vac, 220Vac, 240Vac, and 480Vac, offering flexibility across different electrical environments. Additionally, these units can be utilized to protect DC power systems, further extending their application scope.

Installation and Usage Features

Installation of the TDS series requires adherence to national electrical codes and safety protocols. It is crucial to ensure that power is completely removed from the area and circuits before commencing any installation or maintenance work. Qualified personnel are required to perform these tasks to prevent electrical shock or burn hazards. The device is designed for easy mounting onto 35mm (top hat) DIN rails, a standard EN50022 component. The securing clips are positioned towards the bottom of the rail, with the label text facing upwards for correct orientation.

For optimal performance, the TDS modules must be installed within an enclosure or switchboard panel. This enclosure serves multiple purposes: it prevents the TDS unit(s) from exceeding their maximum specified operating temperature, provides adequate electrical and safety protection for all exposed terminals, meets environmental requirements, and prevents the ingress of moisture and water. The design also ensures that the indicator status of the TDS can be easily inspected.

Wiring connections are critical for the proper functioning of the TDS. The interconnecting wiring should be kept as short as possible, ideally not exceeding 300mm (12 inches), and sharp bends should be avoided (a radius greater than 100mm is recommended). Where feasible, conductors should be twisted together. The terminals are designed to accommodate multi-strand wiring up to 25mm² (#4AWG) or single-strand wiring up to 35mm² (#2AWG), with an insulation strip-back of 8mm (5/16 inches).

When Residual Current Detectors (RCDs) are part of the system, it is preferable to install the TDS modules upstream of the RCD. This placement helps prevent nuisance tripping that can occur during transient activity. Overcurrent protection is also essential and must be installed in the upstream circuit of every TDS unit if the mains supply exceeds 100A. This protects the TDS, the load, and the wiring in the event of a fault.

The TDS series offers remote status monitoring via voltage-free contacts. This feature allows for continuous oversight of the device's operational status. Failure of the TDS is indicated by the opening of Normally Closed (N/C) contacts and the closing of Normally Open (N/O) contacts. It is important to ensure that the voltage and current ratings of these contacts are not exceeded. The status of these contacts is independent of whether power is supplied to the TDS module, reflecting solely the failure status of the module itself.

Maintenance Features

The TDS modules incorporate an internal thermal disconnect element. This element automatically disconnects the varistor from the network in the event of a thermal overload. Should this internal disconnect operate, a red flag will appear in the transparent window of the Status Indicator(s) on the front of the TDS, providing a clear visual cue for maintenance.

Regular inspection of TDS units is recommended, especially after periods of lightning or transient voltage activity. The Status Indicator should be checked, and if tripped, the module should be replaced. When a TDS module needs to be removed from service, it is imperative to ensure that power has been removed and, if possible, "locked out." Only qualified personnel should undertake the replacement of TDS modules. Replacement plug-in modules are available, simplifying the maintenance process. It is crucial to ensure that any new module installed is of the same type and voltage as the one being replaced to maintain system integrity and performance.

The device is designed for reliability and ease of maintenance, ensuring continuous protection for critical power distribution systems. Adherence to installation guidelines, regular inspections, and proper replacement procedures will maximize the lifespan and effectiveness of the TDS series.