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IEC 61347-1 Annex D Test Chamber Heating Enclosure For Thermally Protected Ballasts / Rectifier Thermal Protection

China KingPo Technology Development Limited certification
China KingPo Technology Development Limited certification
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—— SGS

Good day and thank you for you According to the sample of the instrument you provided, we are very satisfied with our test. We want to change the order from 2 to 10. The following is the order details of our Asia Pacific branch. Would you please send me the quotation of the corresponding office? So we can generate an order to confirm it. Thank you.

—— Angel

Dear Supplier KINGPO TECHNOLOGY DEVELOPEMENT, In the ambit of ISO 9001:2015 certification, we intend to communicate the requirements as well as its percentage used on final evaluation used by ISQ to control and monitor its external supplier’s performance as per bellow: According with the above requirements to be maintained in future evaluations

—— ISQ Procurement Management

first of all, I would also like to thank you for the good cooperation! We especially appreciate the fast service and that there is almost always a solution for our requests and problems. Thank you very much for this and all the best and continue a good cooperation also for 2022!

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IEC 61347-1 Annex D Test Chamber Heating Enclosure For Thermally Protected Ballasts / Rectifier Thermal Protection


Large Image :  IEC 61347-1 Annex D Test Chamber Heating Enclosure For Thermally Protected Ballasts / Rectifier Thermal Protection

Product Details:
Place of Origin: China
Brand Name: KingPo
Certification: calibration certificate
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: To be Quoted
Packaging Details: safety tool box or plywood pack.
Delivery Time: 25 working days
Payment Terms: T/T
Supply Ability: 25 sets per month
Detailed Product Description
Standard: IEC 61347-1, Annex D Internal Size: L610mmXW610mmXH610mm
Outer Size: L660mmXW660mmXH760mm Door Size: 150*150mm
Shelf: Made As Per Figure D1 Heating Elements: 4 Sets, 300W Heater
Temperature Control: PID + Thermocouple Test Temperature: 65℃
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led testing equipment


led lamp testing equipment


IEC 61347-1 Annex D Test Chamber / heating enclosure for thermally protected ballasts / Rectifier thermal protection


D.1 Test enclosure

The heating tests are made in an enclosure in which the temperature of the ambient air is

maintained as specified (see Figure D.1). The entire test enclosure shall be constructed of

heat resistant material 25 mm thick. The test compartment of this enclosure shall have

internal dimensions of 610 mm × 610 mm × 610 mm. The floor of the test compartment shall measure 560 mm × 560 mm, permitting an air space of 25 mm all around the platform for circulation of the heated air. A 75 mm heater compartment shall be provided below the floor of the test area for the heating elements. One side of the test compartment may be removable,

but shall be so constructed that it can be securely fastened to the remainder of the enclosure.

One of the sides shall have a 150 mm square opening located centrally at the bottom edge of

the test compartment, and the enclosure so constructed that the only possibility of air

circulation will be through this opening. The opening shall be covered by an aluminium shield

as shown in Figure D.1.


D.2 Heating of enclosure

The heat source used for the test enclosure described above shall consist of four 300 W strip

heaters having approximate heating surface dimensions of 40 mm × 300 mm. These elements shall be connected in parallel to the supply source. The elements shall be mounted in the 75 mm heater compartment midway between the test compartment floor and the base, and so arranged that they form a square with the outside edge of each element 65 mm from the adjacent inside wall of the enclosure. The elements shall be controlled by a suitable thermostat.


D.3 Lamp controlgear operating conditions

During the test, the frequency of the supply circuit shall be the rated frequency of the lamp

controlgear, and the voltage of the supply circuit shall be the rated supply voltage of the lamp

controlgear. During the test, the temperature in the enclosure shall be maintained at 0

40(+0,-5) °C; prior to the test, the lamp controlgear (not energized) shall be placed in the chamber for a sufficient interval of time to allow all parts to attain the temperature of the air therein. If the temperature in the chamber at the end of the test differs from that at the beginning of the test,this temperature differential shall be taken into account in determining the temperature rise of the components of the lamp controlgear. The lamp controlgear shall supply the number and size of lamps for which it is intended. Lamps shall be placed outside the enclosure.


D.4 Lamp controlgear position in the enclosure

During the test, the lamp controlgear shall be in its normal operating position supported

75 mm above the floor of the test compartment by two 75 mm wooden blocks, and shall be

centrally located with respect to the sides of the enclosure. Electrical connections may be

brought out of the enclosure through the 150 mm square opening illustrated in Figure D.1.

During the test, the enclosure shall be so located that the shielded opening is not exposed to

draughts or rapid air currents


D.5 Temperature measurements

The average ambient temperature in the enclosure is assumed to be the average air

temperature at positions not less than 76 mm from the nearest wall and on a level with the

centre of the lamp controlgear.

The temperature is usually measured by a glass thermometer. An alternative sensor is a

thermocouple or 'thermistor' attached to a small metal vane shielded against radiation.

Temperatures on the case are usually measured by means of thermocouples. A temperature

is considered to be constant when three successive readings, taken at intervals of 10 % of the

previously elapsed duration of the test (but not less than 5 min intervals), indicate no change.


IEC 61347-1 Annex D Test Chamber Heating Enclosure For Thermally Protected Ballasts / Rectifier Thermal Protection 0

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