Uninterruptible Power Supply (UPS)

Features

• Robust stainless steel housing
• Regulated output is current limited and has continuous short circuit protection
• 3.5 Ah back-up battery with automatic uninterrupted power transfer
• 12 V, 750 mA Ex ia Ma certified output
• Analogue output signal to show battery charge status
• Volt-free contact to show mains input status

Diagram: The TX6648 unit features a robust stainless steel housing. On the front panel, there is a timer reset button. The unit is divided into chambers: an Ex ia Terminal Chamber, a Mains Input Chamber, and a Battery Chamber. The Mains Input Chamber has terminals for 110V ac, 230V ac, or 24V ac input. The Ex ia output provides +V and OV terminals, along with terminals for Power Fail Relay (P1, P2, P3), Charge Condition Monitor Output (C1, C2, C3), and Timer Control Terminals (T1, T2). The unit also includes fixing holes and M25 Glanc entries.

Benefits

• Can remain on standby battery power in Ex ia Ma area conditions
• Available power can be remotely monitored via the battery charge analogue output signal
• AC mains failure can be remotely monitored via a volt-free output
• Spacious termination facilities to connect heavy-duty mining cables
• Sealed unit requires no user maintenance or examination
• Ex eq certification eliminates any maintenance costs of Ex d style enclosures

Functional Overview

The power supply converts an AC supply voltage into a stabilised and regulated intrinsically safe source, ideal for supplying power to approved sensors and electronic control devices in hazardous areas.

Diagram: The functional overview shows a diagram illustrating the power flow: Mains Input (1) goes to the power supply, which outputs an Intrinsically Safe Ex ia output (2). Terminals 3 and 4 are also indicated as part of the intrinsically safe output.

Technical Information

Dimensions

Diagram: The dimensions show the unit with a height of 340mm, width of 386mm, and depth of 160mm. The Ex ia Chamber has dimensions of 160mm x 110mm x 67mm. The Battery Chamber is 160mm x 110mm x 110mm. The Mains Input Chamber is 160mm x 110mm x 58mm. There are 8 x Ø9.0 fixing holes and 2 x M25 Glanc entries.

Connections

Diagram: The connection diagram illustrates the following:

• Exi Output: +V, +V, -V, 0V, P1, P2, P3, C1, C2, C3, T1, T2
• Mains Input: 110V ac or 230V ac or 24V ac
• Output Specifications: +V = 12 V dc (intrinsically safe output), 0V = 0V (intrinsically safe output)
• Power Fail Relay: P1 = C, P2 = N/C, P3 = N/O
• Charge Condition Monitor Output: C1 = 0.4 to 2 V, C2 = 0 V, C3 = 4 to 20 mA
• Timer Control Terminals: T1, T2
• Remote Link: To Enable Timer Function

Battery Conserve Timer

The TX6648 Power supply is fitted with a Battery Conserve Timer. The timer is used to conserve battery power when used on mobile machinery where battery support will only be required for short intervals between long periods.

• The battery will be charged in the normal way when the main power is ON.
• The battery back-up output will be terminated 30 minutes after the main power is OFF.
• The battery back-up output may be re-instated at any time for a period of 30 minutes by operation of a pushbutton on the side of the power supply housing or a remote pushbutton connected to T1 and T2.
• The timer is disabled by fitting a link between T1 and T2.

Order Reference

ATEX & IECEx Certification

• 110 V ac supply: TX6648.35.105.101.1206.19
• 230 V ac supply: TX6648.35.106.101.1206.19
• 24 V ac supply: TX6648.35.103.101.1206.19

MASC Certification

• 110 V ac supply: TX6648.35.105.101.1206.05
• 230 V ac supply: TX6648.35.106.101.1206.05
• 24 V ac supply: TX6648.35.103.101.1206.05

Image: A small image of the TX6648 unit is displayed.

Disclaimer

The information provided in this document contains general descriptions and technical characteristics of the performance of the product. It is not intended as a substitute for and is not to be used for determining suitability or reliability of this product for specific user applications. It is the duty of any user or installer to perform the appropriate and complete risk assessment, evaluation and testing of the products with respect to the specific application or use. Trolex shall not be responsible or liable for misuse of the information contained herein. When instruments are used for applications with technical safety requirements, the relevant instructions must be followed.

All pertinent state, regional, and local safety regulations must be observed when installing and using this instrument. For reasons of safety and to help ensure compliance with documented system data, only Trolex or its affiliates should perform repairs to components.

Trolex Ltd. reserves the right to revise and update this documentation from time to time without obligation to provide notification of such revision or change. Revised documentation may be obtainable from Trolex.

Trolex Ltd. reserves the right, without notice, to make changes in equipment design or performance as progress in engineering, manufacturing or technology may warrant.

Trademark

© 2025 Trolex® Ltd.

No part of this document may be reproduced in any form or by any means, electronic or mechanical, including photocopying, without express written permission of Trolex.

Trolex is a registered trademark of Trolex Ltd. The use of all trademarks in this document is acknowledged.

Contact Information

At Trolex, we save lives. We believe that no person should risk their life to earn a living. Our aim is to become the world's leading name in health and safety technology, through pioneering products that provide real-world benefits to our customers, whenever workers operate in hazardous environments.

For more information about Trolex, please contact us at:

• Website: www.trolex.com
• Enquiries: sales@trolex.com
• Telephone: +44 (0) 161 483 1435

Trolex Ltd
Newby Road, Hazel Grove
Stockport, Cheshire
SK7 5DY, United Kingdom

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