ISO 7240-17:2020

Fire detection and fire alarm systems — Part 17: Transmission path isolators

This document specifies the requirements, test methods and performance criteria for transmission path isolators for use in fire detection and fire alarm systems for buildings (for general requirements and definitions, see ISO 7240‑1). Means of isolation or protection incorporated within control and indicating equipment are not covered by this document.

Systèmes de détection d'incendie et d'alarme — Partie 17: Isolateurs de court-circuit

General Information

• Status: Published
• Publication Date: 06-Feb-2020
• ICS: 13.220.20 - Fire protection
• Technical Committee: ISO/TC 21/SC 3 - Fire detection and alarm systems
• Drafting Committee: ISO/TC 21/SC 3/WG 6 - Smoke detectors
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2025
• Due Date: 15-Jan-2025
• Completion Date: 15-Jan-2025

Relations

• Revises: ISO 7240-17:2009 - Fire detection and fire alarm systems — Part 17: Short-circuit isolators
• Effective Date: 05-Nov-2015

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 7240-17
Second edition
2020-02
Fire detection and fire alarm
systems —
Part 17:
Transmission path isolators
Systèmes de détection d'incendie et d'alarme —
Partie 17: Isolateurs de court-circuit
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 2
4.1 Compliance . 2
4.2 Integral status indication . 2
4.3 Connection of ancillary devices . 2
4.4 Monitoring of detachable transmission path isolators . 3
4.5 Manufacturer's adjustments . 3
4.6 On-site adjustments . 3
4.7 Requirements for software-controlled transmission path isolators . 3
4.7.1 General. 3
4.7.2 Software design. 3
4.7.3 Storage of programs and data . 3
5 Tests . 4
5.1 General . 4
5.1.1 Atmospheric conditions for tests. 4
5.1.2 Operating conditions for tests . 4
5.1.3 Mounting arrangements . 4
5.1.4 Tolerances . 4
5.1.5 Functional test . 4
5.1.6 Provision for tests . 5
5.1.7 Test schedule . 5
5.2 Reproducibility . 6
5.2.1 Object . 6
5.2.2 Test procedure . 7
5.2.3 Requirements . 7
5.3 Variation in supply voltage . 7
5.3.1 Object . 7
5.3.2 Test procedure . 7
5.3.3 Requirements . 7
5.4 Dry heat (operational) . 7
5.4.1 Object . 7
5.4.2 Test procedure . 7
5.4.3 Requirements . 8
5.5 Cold (operational) . 8
5.5.1 Object . 8
5.5.2 Test procedure . 8
5.5.3 Requirements . 9
5.6 Damp heat, cyclic (operational) . 9
5.6.1 Object . 9
5.6.2 Test procedure . 9
5.6.3 Requirements .10
5.7 Damp heat, steady state (endurance) .11
5.7.1 Object .11
5.7.2 Test procedure .11
5.7.3 Requirements .11
5.8 Sulfur dioxide (SO ) corrosion (endurance) .11
5.8.1 Object .11
5.8.2 Test procedure .12
5.8.3 Requirements .12
5.9 Shock (operational) .12
5.9.1 Object .12
5.9.2 Test procedure .12
5.9.3 Requirements .13
5.10 Impact (operational) .13
5.10.1 Object .13
5.10.2 Test procedure .13
5.10.3 Requirements .14
5.11 Vibration, sinusoidal (operational) .15
5.11.1 Object .15
5.11.2 Test procedure .15
5.11.3 Requirements .15
5.12 Vibration, sinusoidal (endurance) .16
5.12.1 Object .16
5.12.2 Test procedure .16
5.12.3 Requirements .16
5.13 Electromagnetic Compatibility (EMC), Immunity tests (operational) .17
5.13.1 Object .17
5.13.2 Test procedure .17
5.13.3 Requirements .
...

INTERNATIONAL ISO
STANDARD 7240-17
Second edition
2020-02
Fire detection and fire alarm
systems —
Part 17:
Transmission path isolators
Systèmes de détection d'incendie et d'alarme —
Partie 17: Isolateurs de court-circuit
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 2
4.1 Compliance . 2
4.2 Integral status indication . 2
4.3 Connection of ancillary devices . 2
4.4 Monitoring of detachable transmission path isolators . 3
4.5 Manufacturer's adjustments . 3
4.6 On-site adjustments . 3
4.7 Requirements for software-controlled transmission path isolators . 3
4.7.1 General. 3
4.7.2 Software design. 3
4.7.3 Storage of programs and data . 3
5 Tests . 4
5.1 General . 4
5.1.1 Atmospheric conditions for tests. 4
5.1.2 Operating conditions for tests . 4
5.1.3 Mounting arrangements . 4
5.1.4 Tolerances . 4
5.1.5 Functional test . 4
5.1.6 Provision for tests . 5
5.1.7 Test schedule . 5
5.2 Reproducibility . 6
5.2.1 Object . 6
5.2.2 Test procedure . 7
5.2.3 Requirements . 7
5.3 Variation in supply voltage . 7
5.3.1 Object . 7
5.3.2 Test procedure . 7
5.3.3 Requirements . 7
5.4 Dry heat (operational) . 7
5.4.1 Object . 7
5.4.2 Test procedure . 7
5.4.3 Requirements . 8
5.5 Cold (operational) . 8
5.5.1 Object . 8
5.5.2 Test procedure . 8
5.5.3 Requirements . 9
5.6 Damp heat, cyclic (operational) . 9
5.6.1 Object . 9
5.6.2 Test procedure . 9
5.6.3 Requirements .10
5.7 Damp heat, steady state (endurance) .11
5.7.1 Object .11
5.7.2 Test procedure .11
5.7.3 Requirements .11
5.8 Sulfur dioxide (SO ) corrosion (endurance) .11
5.8.1 Object .11
5.8.2 Test procedure .12
5.8.3 Requirements .12
5.9 Shock (operational) .12
5.9.1 Object .12
5.9.2 Test procedure .12
5.9.3 Requirements .13
5.10 Impact (operational) .13
5.10.1 Object .13
5.10.2 Test procedure .13
5.10.3 Requirements .14
5.11 Vibration, sinusoidal (operational) .15
5.11.1 Object .15
5.11.2 Test procedure .15
5.11.3 Requirements .15
5.12 Vibration, sinusoidal (endurance) .16
5.12.1 Object .16
5.12.2 Test procedure .16
5.12.3 Requirements .16
5.13 Electromagnetic Compatibility (EMC), Immunity tests (operational) .17
5.13.1 Object .17
5.13.2 Test procedure .17
5.13.3 Requirements .
...