Title: File E145049 Vol. 5 Sec. 4 Page 1 Issued: 1-29-99
Author: ULI
Last saved by: DH
Company: Underwriters Laboratories

File E319041
Project 09CA12833

April 28, 2009

REPORT

On

HEATERS, SPECIALTY – COMPONENT

Shanghai Beehe Electric Co Ltd
Shanghai, China

Copyright © 2009 Underwriters Laboratories Inc.

Underwriters Laboratories Inc. authorizes the above named company to reproduce this Report provided it is reproduced in its entirety.

Underwriters Laboratories Inc. authorizes the above-named company to reproduce the latest pages of that portion of this Report consisting of this Cover Page through Page 3.

File E319041	Vol. 1	Sec. 2	Page 1	Issued:  2009-04-28
	and Report	Revised:  2012-01-19

DESCRIPTION

PRODUCT COVERED:

USR, CNR – Silicon Rubber Heater, Series SHF;

MODEL DESIGNATION:

Model No. = SHF-A-B-C-D; where 

SHF = Basic designation

A (10~6000) = Heater Length, min 10 mm to max 6000 mm

B (10~1000) = Heater Width, min 10 mm to max 1000 mm

C (5~240) = Heater Voltage, min 5 V ac to Max 240 V ac

D (1~8000) = Heater Wattage, min 1 to max 8000

ELECTRICAL RATING:

Model No. | Maximum Voltage, V @ | Frequency, Hz # | Wattage Density, W/cm^2 @ | Wattage, W @
SHF-A-B-C-D | 240 V | 50/60 | 0.06 ~ 4.2 | 1~8000

@ - For both Direct Current and Alternating Current.
# - For Alternating Current.

*

TECHNICAL CONSIDERATIONS (NOT FOR FIELD REPRESENTATIVE’S USE):

The heaters covered by this Report consist of heating element sandwiched between silicone rubber impregnated fiberglass fabric sheets.  The sheets are bonded together by heating press.

USL indicates investigation to UL Standard for Electric Heating Appliances, UL 499, 13^th Edition.

CNL indicates that the unit was investigated to Canadian Standard for Heater Elements, CSA C22.2 No. 72-M1984.

Use - The heater is intended for use only in complete equipment where the acceptability of the combination is determined by Underwriters Laboratories Inc.

File E319041	Vol. 1	Sec. 2	Page 2	Issued:  2009-04-28
	and Report	

Conditions of Acceptability - In determining the acceptability of the heating elements covered by this Report, consideration should be given to the following conditions:

1.	The complete model designation shall be specified in the end‑product Procedure to identify the specific construction found acceptable.

2.	The performance of the heaters under normal and abnormal operating conditions is to be evaluated with the end product in accordance with the requirements of the end-product standards.  Under normal operating conditions, the maximum temperature on the surface of silicone rubber heater shall not exceed 150 °C that is according to the material type of usage.  The need for additional tests will need to be determined in the end use application.

3.	Acceptability of lead wires with regard to type and thickness of insulation, size (lead wire gauge), length, and temperature and voltage ratings is to be determined in the end application.  The minimum ratings covered by this report are 200°C, 300 V.  Strain relief shall be provided for leads if determined to be necessary in accordance with the requirements of the end-product standards.

4.	Electrical spacings between uninsulated live parts of opposite polarity shall be evaluated in accordance with the requirements of the end‑product standard.

5.	The heater is to be enclosed in accordance with the requirements of the end product.

6.	The heaters have not been evaluated for exposure to unusual environmental conditions, such as chemicals, water, moist or wet contact, UV radiation, or X‑rays, and have not been evaluated for products involving wet or moist contact; the heaters have not been investigated for field wiring connection requirements.

7.	The heater shall not be subjected to flexing, tension, compression, or contact with sharp edges or objects.  The units have not been tested for flexing. Any use where flexing will occur in the end use application shall be given consideration.

8.	The acceptability of dimension, mounting, supporting and securement means shall be determined in the end product.  Such means shall be of such nature that crushing of or any other damage of the heater is prevented.

9.	The acceptability of any fittings, connectors, pastes, adhesive and accessories, provided external to the basic heater construction, shall be evaluated as part of the end product construction in accordance with the requirements of the end-product standards.

10.	The acceptability of thermostats or thermal cut-offs or other optional components, the electrical ratings and operation shall be determined in the end-use products.  The acceptable thermostat or thermal cut-off must be identified in the end-use device description.

File E319041	Vol. 1	Sec. 2	Page 3	Issued:  2009-04-28
	and Report	

11.	The suitability of the alternate marking shall be determined in the end use application.

12.	The following tests were conducted as part of this Recognition:

Power Input Test, Leakage Current Test, Leakage Current As A Result Of Moisture, Dielectric Voltage-Withstand Test

13.	The Insulation Resistance Test was not conducted, whether it shall be conducted is in accordance with the judgment of End-Product Standard.

File E319041	Vol. 1	Sec. 2	Page 4	Issued:  2009-04-28
	and Report	

CONSTRUCTION DETAILS:

For construction details, reference should be made to the following photographs and the associated descriptive indices.  All dimensions are approximate unless specified as being maximum or minimum.

Spacings - Spacings of not less than 1.6 mm through air and over the surface of insulating material shall be maintained between uninsulated live parts of opposite polarity and between uninsulated live parts and dead-metal parts.

Illustrations - The following illustrations are provided in this Report.

ILL. No. | Description
1 | Drawing of Heating Element of Model SHF-225-50-240-450 (maximum wattage density)

MARKINGS:

Each element shall be permanently marked and plainly visible with the manufacturer’s name or trademark, model designation, electrical ratings in watts and in volts.

General - The general design, shape, and arrangement shall be as illustrated in the following figures, except where variations are specifically described.

File E319041	Vol. 1	Sec. 2	Page 5	Issued:  2009-04-28
	and Report	

SILICON RUBBER HEATER, SERIES SHF - FIGS. 1 and 2

General - Fig. 1 shows the overall view of Model SHF-225-50-240-450, Fig. 2 shows the disassemble view of Model SHF-225-50-240-450.  Also represent other models in the Series SHF except for dimension, wattage density and wattage.

1.	Lead Wires – Two provided.  R/C AVLV2/8, rated minimum 30 AWG, 200°C, 300 V.  Leads terminated to Heating Element with collapsed stainless piece secured by Soldering.

2.	Silicone Rubber Sheet – Two provided.  R/C QMFZ2, ARLON INC (E54153), Type (GG)98(C)(Co)(TT), silicone rubber, rated V-0, 150°C, suitable for direct support to live parts.  Each, minimum 0.75 mm thick, length within 10 mm to 6000 mm, width within 10 mm to 1000 mm.  Provided with two cutouts for Lead Wires exit.  Two pieces secured together by heating press.

3.	Heating Element – Constructed by etched foil element, wrapped around silicone rubber sheet, laid out in parallel runs with minimum 1.6 mm space maintained to edges of heater.  The heater rating are variable depending on the Heating Element.  See ILL. 1 for detailed layout of maximum wattage density. 

4.	Terminal Cover Sheet – R/C QMFZ2, ARLON INC (E54153), Type (GG)98(C)(Co)(TT), silicone rubber, rated V-0, 150°C, suitable for direct support to live parts, minimum 0.75 mm thick.  Secured onto Silicone Rubber Sheet by heating press.