SUN - UL 507, Electric Fans

Additions to existing requirements are underlined and deletions are shown lined out below.

New clause added;

A motor starting or running capacitor shall be rated for the appropriate voltage, and with the exception of electrolytic type, the maximum available fault current (AFC) to which it can be subjected, in accordance with the following:

a) A value of 5,000 A minimum when connected directly across the line;

b) For capacitors connected in series with a motor coil, the maximum current available to a short-circuited capacitor, when connected in series with the motor coil energized under locked rotor conditions; and

c) A dry metallized-polypropylene film capacitor operating at less than or equal to 330 VRMS shall not be required to have a maximum AFC rating.

In addition to complying with Section 62.1 and, after being tested as described in 51H.2 and 51H.3, a tag used for a cautionary marking in accordance with 62.8.1 is considered to be permanently affixed to a power-supply cord if there is no:

a) Tearing at any point for more than 1/16 in (1.6 mm),

b) Separation from the power-supply cord,

c) Shrinkage, deformation, cracking, or other condition that will render the marking on the tag illegible,

d) Torn or otherwise damaged overlamination. The printing shall remain legible and the overlamination shall remain in place, or

e) Slippage or movement along the length of the cord set more than 1/2 inch (13 mm) and there shall not be any visible damage to the cord.

To determine compliance with 51H.1, a cord tag shall be conditioned in accordance with (a) - (c). Following the conditioning each sample shall be tested in accordance with 51H.3. If a tag is applied by an adhesive, the conditioning and test are to be conducted no sooner than 25 h after application of the tag.

a) Three samples, as received, shall be tested in accordance with 51H.3.

b) Three samples shall be conditioned in an air-circulating oven at 60 ±1°C (140 ±1.8°F) for 240 h followed by 30 min of conditioning at a room temperature of 23 ±2°C (73.4 ±3.6°F) and 50 ±5% relative humidity then followed by the test in 51H.3.

c) Three samples shall be conditioned for 72 hr at a humidity of 85 ±5% at 32 ±2°C (89.6 ±3.6°F) and followed by test in 51H.3 within 1 min after conditioning.

Additions to existing requirements are underlined and deletions are shown lined out below.

The markings specified in this section shall be located on a tag attached to the product within 152.4 mm (6 inches) of the face of the attachment plug.The markings specified in this section shall:

a) Be permanently affixed to an attached power-supply cord,

b) Be located not more than 6 in (152.4 mm) from the attachment plug,

c) Be made of substantial material such as cloth, plastic, or the equivalent that provides the necessary mechanical strength and prevents easy removal, and

d) Comply with the requirements in 51H.1 – 51H.3. The tag shall be of a size that facilitates legibility of the required markings, and all exposed surfaces shall have a clear plastic overlay, or the equivalent, to protect the markings. The tag shall be either of the following forms:

1) A flag-type tag having a hole to permit securement to the power-supply cord or hose by a plastic strap or equivalent means. The strap shall not be removable without cutting; or

2) A flag-type tag with a adhesive back. The tag is to be wrapped tightly once around and is to adhere to the supply cord or hose. The ends of the tag are to adhere to each other and project as a flag. The required markings are to be positioned on the projecting flag portion of the tag.