Safety of household and similar electrical appliances - Part 59 : Particular requirements for oral hygiene appliances
1 Scope
This clause of GB/T 4706.1-2024 is replaced by the following.
This standard deals with the safety of electric oral hygiene appliances for household and similar purposes,
This standard applies to electric oral hygiene appliances for household and similar purposes with the rated voltage being not more than 250 V.
Note 101: Examples of appliances covered by this standard are
– oral irrigators;
– toothbrushes.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
– persons (including children) whose
? physical, sensory or mental capabilities; or
? lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– playing with the appliance by young children.
Note 102: Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary;
– in many countries additional requirements are specified by the authorities, the national authorities concerned.
Note 103: This standard does not apply to appliances for medical purposes (IEC 60601).
2 Normative references
This clause of GB/T 4706.1-2024 is applicable except as follows.
Addition:
IEC 60584-1 Thermocouples - Part 1: EMF specifications and tolerances
Note: GB/T 16839.1-2018 Thermocouples - Part 1 : EMF specifications and tolerances (IEC 60584-1:2013, IDT)
3 Definitions
This clause of GB/T 4706.1-2024 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions
Oral irrigators are operated with the reservoir filled with water having a temperature of approximately 45 °C, to the level specified in the instructions. In the absence of such instructions, the reservoir is filled to the maximum level.
Other appliances are operated without load.
4 General requirement
This clause of GB/T 4706.1-2024 is applicable.
5 General conditions for the tests
This clause of GB/T 4706.1-2024 is applicable.
6 Classification
This clause of GB/T 4706.1-2024 is applicable except as follows.
6.1 Modification:
Appliances shall be class II or class III.
6.2 Addition:
Class II appliances shall be at least IPX7 except that parts intended to be fixed, and transformers with pins for insertion into socket-outlets, shall be at least IPX4.
Class III appliances shall be at least IPX4. However, if the rated voltage does not exceed 24 V, they may be IPX0.
7 Marking and instructions
This clause of GB/T 4706.1-2024 is applicable except as follows.
7.12.1 Addition:
The installation instructions shall state that parts that have to be fixed must be fixed so that they cannot fall into water, unless they are of IPX7 construction.
8 Protection against access to live parts
This clause of GB/T 4706.1-2024 is applicable.
9 Starting of motor-operated appliances
This clause of GB/T 4706.1-2024 is not applicable.
10 Power input and current
This clause of GB/T 4706.1-2024 is applicable.
11 Heating
This clause of GB/T 4706.1-2024 is applicable except as follows.
11.3 Addition:
Where the external accessible surfaces are suitably flat and access permits, then the test probe of Figure 101 is used to measure the temperature rises of external accessible surfaces specified in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface in such a way that the best possible contact between the probe and the surface is ensured. The measurement is performed after a contact period of 30 s.
The probe may be held in place using a laboratory stand clamp or similar device. Any measuring instrument giving the same results as the probe may be used.
11.7 Replacement:
Appliances are operated for five cycles, each cycle comprising an operating period of 3 min and a rest period of 1 min. During the rest period, the reservoir of oral irrigators is refilled.
Note 101: If the reservoir empties during the operating period, it is refilled and the test is continued.
11.8 Addition:
During the test, the temperature rises are monitored continuously and shall not exceed the values shown in Table 101.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of GB/T 4706.1-2024 is applicable.
14 Transient overvoltages
This clause of GB/T 4706.1-2024 is applicable.
15 Moisture resistance
This clause of GB/T 4706.1-2024 is applicable.
16 Leakage current and electric strength
This clause of GB/T 4706.1-2024 is applicable.
17 Overload protection of transformers and associated circuits
This clause of GB/T 4706.1-2024 is applicable.
