UL 45:2004 pdf download HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS – SAFETY – Part 2-12: Particular Requirements for concrete vibrators
1 Scope
This clause of part 1 is applicable except as follows:
1.1 Addition:
This standard applies to concrete vibrators.
2 Normative references
This clause of part 1 is applicable
3 Definitions
This clause of part 1 is applicable, except as follows:
3.2.9 Replacement:
normal load : load obtained when the tool is operated continuously, the hose and vibrator bottle beingattached to the tool as for normal use. During the operation the vibrator bottle is immersed centrally in acontainer filled with an amount of water corresponding to at least 50 times the volume of the vibratorbottle.
The dimensions of the container are such that the diameter is about 50 % of the height of the waterinside the container.
The height of the container is such that no water can splash out during the test.
Addition:
3.101 concrete vibrator : tool intended for compacting concrete. The active part (vibrator bottle) of thevibrator performs low-amplitude vibrations and is immersed into the mass of concrete to be vibratedConcrete vibrators may be of one of the following designs:
the motor and the vibrating mechanism are inside the vibrator bottle to which the partcontaining the mains switch is connected by means of a long flexible hose containing theinterconnecting cable;
the motor and the vibrating mechanism are inside the vibrator bottle to which a handle,comprising the part containing the mains switch, is fixed by means of a short rigid tube, theseparts forming a constructional unit;
the vibrator mechanism s only inside the vibrator bottle to which a separate portable unitcomprising the motor and the part containing the mains switch, is connected by means of along flexible hose containing a flexible shaft
4 General requirements
This clause of part 1 is applicable
5 General conditions for the tests
This clause of part 1 is applicable.
6 Void
7 Classification
This clause of part 1 is applicable.
8 Marking and instructions
This clause of part 1 is applicable
9 Protection against access to live parts
This clause of part 1 is applicable.
10 Starting
This clause of part 1 is applicable, except as follows:
10.1 Addition:
The test is made at an ambient temperature of (10 – 1) C after the concrete vibrator has been kept atthis temperature for at least 2 h.
11 Input and current
This clause of part 1 is applicable.