AS/NZS 62086.1:2002

1 - AS/NZS 62086.1:2002 ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES-ELECTRICAL RESISTANCE TRACE HEATING - GENERAL AND...
4 - PREFACE
5 - CONTENTS
6 - INTRODUCTION
7 - 1 Scope
7 - 2 Normative references
8 - 3 Definitions
8 - 3.1 ambient temperature
8 - 3.2 branch circuit
8 - 3.3 connections
8 - 3.3.1 cold lead
8 - 3.3.2 end termination
8 - 3.3.3 power termination
8 - 3.4 tee
8 - 3.5 dead leg
8 - 3.6 design loading
8 - 3.7 factory fabricated
9 - 3.8 field-assembled
9 - 3.9 heat loss
9 - 3.10 heat sink
9 - 3.11 heat-transfer aids
9 - 3.12 heating pad
9 - 3.13 heating panel
9 - 3.14 high-limit temperature
9 - 3.15 maximum ambient temperature
9 - 3.16 maximum withstand temperature
9 - 3.17 metallic covering
9 - 3.18 minimum ambient temperature
9 - 3.19 operating voltage
10 - 3.20 overjacket
10 - 3.21 power density
10 - 3.22 rated output
10 - 3.23 rated voltage
10 - 3.24 routine test
10 - 3.25 series trace heater(s)
10 - 3.26 sheath
10 - 3.27 sheath temperature
10 - 3.28 stabilized design
10 - 3.29 start-up current
10 - 3.30 system documentation
11 - 3.31 temperature controller
11 - 3.32 temperature sensor
11 - 3.33 thermal insulation
11 - 3.34 trace heater
11 - 3.35 trace heater unit
11 - 3.36 trace heating
11 - 3.37 type test
11 - 3.38 weather barrier
11 - 3.39 workpiece
12 - 4 General requirements
12 - 4.1 General
12 - 4.2 Trace heaters
12 - 4.3 Terminations and connections
12 - 4.4 Circuit protection requirements for branch circuits
13 - 4.5 Control and temperature requirements
13 - 4.5.1 General
13 - 4.5.2 Stabilized design for zone 1 and zone 2 applications
13 - 4.5.3 Controlled design
13 - 5 Testing
13 - 5.1 Type tests
13 - 5.1.1 General
14 - 5.1.2 Dielectric test
14 - 5.1.3 Electrical insulation resistance test
14 - 5.1.4 Flammability test
15 - 5.1.5 Impact test
16 - 5.1.6 Deformation test
17 - 5.1.7 Cold bend test
18 - 5.1.8 Moisture resistance test (trace heating cables only)
19 - 5.1.9 Verification of rated output
21 - 5.1.10 Thermal stability of electrical insulating material
21 - 5.1.11 Determination of maximum sheath temperature
23 - 5.1.12 Verification of start-up current
24 - 5.1.13 Verification of the resistance of metallic covering
24 - 5.2 Routine tests
24 - 5.2.1 Dielectric test
24 - 5.2.2 Verification of rated output
24 - 6 Marking
24 - 6.1 General
24 - 6.2 Factory- fabricated trace heater units or sets
24 - 6.3 Bulk heater cables
25 - 6.4 Cable spools, reels or cartons
25 - 6.5 Heater field termination/splice kits
25 - 6.6 Installation marking
26 - Bibliography
27 - AMENDMENT CONTROL SHEET

Specifies general and testing requirements for electrical resistance trace heaters for application in explosive gas atmospheres. It covers trace heaters that may comprise either factory- or field- (work-site) assembled units, and which may be series heating cables, parallel heating cables or heating pads and heating panels that have been assembled and/or terminated in accordance with the manufacturer's instructions. This Standard also includes requirements for termination assemblies and control methods used with trace heating. This Standard is identical with and has been reproduced from IEC 62086-1:2001.

This part of IEC 62086 specifies general and testing requirements for electrical resistance trace heaters for application in explosive gas atmospheres. The standard covers trace heaters that may comprise either factory- or field- (work-site) assembled units, and which may be series heating cables, parallel heating cables or heating pads and heating panels that have been assembled and/or terminated in accordance with the manufacturers instructions.This standard also includes requirements for termination assemblies and control methods used with trace heating. The hazardous areas referred to by this standard are those defined in IEC 60079-10.

First published as AS/NZS 62086.1:2002.