Thermon Electric Heat Tracing Bedienungsanleitung PDF herunterladen (Seite 3)

Electric Heat Tracing

Site Practice . . .

1. Provide protective clothing, and other protective

equipment needed to isolate employees from potential

arc ﬂ ash and shock hazards identiﬁ ed in the analysis.

2. Provide training to employees for understanding the

purpose/function of the electrical heat tracing and the

electrical power supply/control equipment. In addition,

how to recognize and avoid the hazards associated with

operation and maintenance.

3. Apply safe work practices including the following:

• Identify the circuit or equipment to be de-energized and

all possible sources of electrical energy supplies to the

specﬁ c circuit or equipment.

• Disconnect both legs of the power supply cable at the

circuit breakers, disconnect switches, and any other

applicable points.

• Apply lockout/tagout devices according to established

procedures.

• Visually verify that the circuit disconnect devices are

open prior to connecting power cable to heat tracers.

• Test for absence of voltage with an approved voltmeter

(where the voltmeter is tested on a known circuit voltage

prior to and immediately following application).

• For protection against accidental energizing of supply

conductors, apply temporary jumpers rated for the

available fault duty between each supply conductor and

earth/ground.

Illustration A: Typical Heat Tracing Installation

Notes . . .

1. Refer to Page 1 for cable types and approval.

2. Illustration depicts a typical self-regulating heating circuit.

3. Temperature control is recommended for all freeze protection and temperature

maintenance heat tracing applications.

4. All heat-traced lines must be thermally insulated.

5. Refer to Thermon form number PN50273U for installation instructions for MI

heating cable.

The following installation procedures are for the installation

of a Thermon electric heat tracing system

. The installation

must comply with Thermon requirements and be installed

in accordance wit the regulations as per standard EN-IEC

60079-14 and EN-IEC 60079-30-2 for hazardous areas

(where applicable), and any other applicable national and

local electric codes.

Individuals installing these products are responsible for

complying with all applicable safety and health guidelines.

Proper personal protective equipment, or PPE, should be

utilized during installation. Contact Thermon if you have

any additional questions.

Applications . . .

1. Electric heat tracing cables are used for freeze protection

or temperature maintenance of piping, tanks and

instrumentation. This set of instructions covers typical

piping applications. For installation details on tanks and

instrumentation, refer to the Installation Guides on our

website www.thermon.com.

2. Heat tracing cables may be installed in ordinary

(nonclassiﬁ ed) and hazardous (classiﬁ ed) locations

depending on the speciﬁ c cable options and approvals

Complete Electric Heat Tracing System . . .

A complete electric heat tracing system may typically include

the following components

1. Electric heat tracing cable

1, 5

(self-regulating, power-

limiting, parallel constant watt or series constant watt).

2. Power connection kit.

3. RTD sensor or control thermostat

4. In-line/T-splice kit (permits two or three cables to be

spliced together).

5. Cable end termination.

. End of circuit light kit.

6. Attachment tape (use on 30cm intervals or as required by

code or speciﬁ cation).

7. “Electric Heat Tracing” label (peel-and-stick label attaches

to insulation vapor barrier on 3m intervals or as required

by code or speciﬁ cation).

8. Thermal insulation

and vapor barrier (by others).

The absence of any of these items can cause a system to

malfunction or represent a safety hazard.

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