Electrical Insulation Resistance Test; Periodic Inspection Record - BriskHeat FE Serie Manual De Instrucciones

Cavo scaldante Serie FE Istruzioni di installazione
PREPARAZIONE TERMINAZIONE FINALE
FASE 1:
Individuare l'ultimo punto modulare nel tratto del cavo. Tagliare 152 mm del cavo oltre questo punto in
modo da formare un'estremità fredda.
Punto modulare
FASE 2:
Utilizzando una taglierina diagonale e/o con un coltello, rimuovere 19 mm della treccia metallica e
0,50" (1,2 cm) del rivestimento estruso per esporre l'involucro interno. Rimuovere l'involucro interno fino
al rivestimento estruso per esporre il filo resistivo avvolto a spirale ed i due fili bus isolati. Sfasciare e
tagliare di nuovo il filo resistivo fino all'involucro interno. Fare attenzione a non danneggiare l'isolamento
sui fili bus. Tagliare uno dei fili bus con 6 mm più corto rispetto all'altro. Accertarsi che il filo resistivo, i
due fili bus e la treccia metallica NON siano a contatto tra di loro.
FASE 3:
Infilare un copriconduttore sui due fili bus e sul rivestimento estruso. Infilare un tubo retraibile sul
copriconduttore e sulla calza metallica. Utilizzando una pistola termica o altro dispositivo di riscaldamen-
to adeguato, riscaldare in modo uniforme tutta la superficie del tubo, restringendolo sopra la treccia
metallica e il copriconduttore.
NOTA: Quando si collega il cavo scaldante al tubo, assicurarsi che l'ultimo punto modulare è a contatto
con la superficie del tubo.
®
© BriskHeat Corporation. Tutti i diritti riservati.
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FE-Series Heating Cable Installation Instructions

ELECTRICAL INSULATION RESISTANCE TEST

Electrical tests are recommended at specific points in the receipt and installation of the heating cable.
This periodical testing is designed to prevent the expenditure of wasted labor in the event of damage to
the product. Installation costs of the cable and thermal insulation are much greater than the heating
cable. Quick identification of any heating cable damage is the most economic approach to an installa-
tion. An insulation resistance test is recommended at the following point of the installation process:
UPON RECEIPT of the heating cable

 BEFORE thermal INSULATION installation
 IMMEDIATELY AFTER thermal insulation installation
 As part of a PERIODIC MAINTENANCE program
Procedure
The insulation resistance test is used to check for damage to extruded jackets. Connections for the
megger are made as shown.
FOR HEATING CABLES WITH BRAID
Test from heating cable bus wires to braid.
500 VDC
MEGGER
Note: Test should use at least a 500 VDC megger. Do not use a megger with an excess of 2500 VDC.
Minimum acceptable readings should be 20 megaohms per circuit, regardless of length.
A record should be kept of the readings taken from the time the cable is first installed on the pipe. A
history of the insulation resistance reading can be helpful in spotting moisture ingress into the electrical
system (indicated by a gradual decline in the insulation resistance) or physical damage to the heating
cable (indicated by a sharp decline in the insulation resistance). A sample record for this is shown. (See
Periodic Inspection Record Form section of this manual).

PERIODIC INSPECTION RECORD

The Periodic Inspection record Form may be used in one of two ways:
1. One sheet per circuit - The results of periodic tests of a single circuit are posted in vertical
columns, beginning on the left and working toward the right. This allows easy comparison of test
values for up to three test sequences on an individual circuit.
2. One circuit per column - Test data for a single test sequence on as many as three circuits can
be recorded on a single sheet.
For additional Periodic Inspection Record Forms, contact your local distributor/representative or
Briskheat at 1-800-848-7673 (toll free, U.S. / Canada) or 1-674-294-3376 (Worldwide) or
bhtsales1@briskheat.com.
© BriskHeat Corporation. All rights reserved.
FOR HEATING CABLES WITH BRAID AND OUTER
JACKET
Test A - (solid lines) from heating cable bus wires to
braid.
Test B - (dotted lines) from braid to metal pipe.
500 VDC
MEGGER
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