TIS 166-2549 （2006） - English

泰国电器安全法规

  - 1 -
Unofficial Translation
In the event of any doubt or misunderstanding arising form this translation, the
standard in Thai will be held to be authoritative
TIS 166-2549 (2006)
Thai Industrial Standard
for
PLUGS AND SOCKET-OUTLETS FOR HOUSEHOLD AND SIMILAR
PURPOSES : PLUGS AND SOCKET-OUTLETS WITH RATED
VOLTAGE NOT EXCEEDING 250 V
1. Scope
1.1 This standard applies to plugs and  fixed socket-outlets  or portable socket-
outlets for a.c. only, with a rated voltage being not more than 250 V and a
rated current not more than 16 A, intended for household and similar
purposes, either indoors or outdoors, at ambient temperatures not normally
exceeding 40° C.
1.2 This standard also applies to plugs  incorporated in cord sets, to plugs and
portable socket-outlets incorporated in cord extension sets and to plugs and
socket-outlets which are components of an appliance, unless otherwise stated
in the standard for the relevant appliance.
 This standard does not apply to 
-  plugs, socket-outlets and couples for industrial purposes;
-  appliance couplers;
-  plugs, fixed and portable socket-outlets for(extra-low voltage; ELV)
-  fixed socket-outlets combined with fuses, automatic switches; etc.
-  requirements for flush mounting boxes: however, it covers only those
requirements for surface-type mounting boxes which are necessary for
the tests on the socket-outlet.
 
   - 2 -
NOTE 
1.  Extra-low voltage values are specified in IEC 60364-4-41.
2.  Pilot lights incorporated in the socket-outlets are allowed provided that
the pilot lights comply with the relevant standard.
3.  Socket-outlets complying with the standard are only suitable for
incorporation in equipment in such a  place that it is  unlikely that the
surrounding temperature exceeding 40 Celsius degree
In locations where special conditions prevail, such as in ships, vehicles and the
like and in hazardous locations, for example where explosions are liable to occur,
special constructions may be required.
2. References
This clause of TIS 2162 clause 2. is applicable
3. Definitions
This clause of TIS 2162 clause 3. is applicable
4.  General requirements
This clause of TIS 2162 clause 4. is applicable
5.  General notes on tests
This clause of TIS 2162 clause 5. is applicable
6.  Ratings
This clause of TIS 2162 clause 6. is applicable, except as follows:
6.1 This clause of TIS 2162 is replace by :
Accessories shall be of a type, voltage and current rating as shown in table 1
 
   - 3 -
Table1  Type and rating of accessories
(clause 6.1)
TYPE  Rated Voltage Rated Current
  V A
Socket-outlet             2P + 
250 16
Rewirable plugs         2P
                               2P + 
250 16
Non-rewireable plugs  2P
                                     2P + 
250
2.5
6
10
16
7.  Classification
This clause of TIS 2162 clause 7. is applicable
8.  Marking
This clause of TIS 2162 clause 8. is applicable
9.  Checking of dimensions
This clause of TIS 2162 clause 9. is applicable, except as follows:
Dimensions of accessory are as follow.
9.101 Add the following subclauses:
 (1) Two poles plugs with grounding pin for equipment of class I
      Dimensions and pin configuration shall be as figure 1.
 (2) Two poles plugs for equipment of class II
      Dimensions and pin configuration shall be as figure 2.
 (3) Two poles socket-outlets  with grounding pin 
      Dimensions and pin configuration shall be as figure 3. and figure 4.
Compliance is checked by inspection and by applying the specified in annex A.
 
 
   - 4 -
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
          Dimensions in millimeters
 
Figure explanation
 
c The symbol   (the symbol No.5019a of IEC 60417) and the letter “L” and “N”shall
be marked on the engagement face of the plug.
The thickness of the symbol and character shall be between 0.2 and 0.4 mm.
 The terminal inside the body of the rewirable plugs shall also be indicated by the
symbol.
d The distance between the engagement face and the cord guard (if any) shall be at least
18 mm.
e Within5 millimetres, measured from the  engagement face, the outline shall not be
smaller than the outline of the engagement face.
f Within18 millimetres, measured from the  engagement face, the outline shall not be
larger than outline of the the engagement face.
insulation
The outline of the engagement
face can be adjusted as appropriate
earthing pin
current-carrying pin
 
R = 1 max.
 
engagement   - 5 -
g  Insulation sleeves on the current-carrying pins are mandatory.
If the insulating sleeves are separate parts, they shall enter the plug ≥ 3 mm measured
from the engagement face.
h The external diameter of the insulating sleeves shall not be larger than the diameter of
the unisulated part of the pins.
i To avoid damage to the shutters, the end of the pins shall be smoothly rounds.
j The angle of 90 ° represents the maximum permissible angle for the orientation of the
cable entry of the axis of the plug.
k The edge of the uninsulated part of the pins shall be smoothly rounds. The distance
between the unisulated part of the pin and the insulated sleeves may not more than 0.2
mm.
 
Figure 1 Dimensions and configuration of two-pole plug with earthing contact for
appliance class I
(clause 9.101(1))
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   - 6 -
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
         Dimensions in millimetres
Figure explanation
 
c The outline of the engagement face of rewirable plugs may be adjusted as appropriate.
d  The distance between the engagement face and the cord guard (if any) shall be at least
18 mm.
e Within 5 millimetres, measured from the engagement face, the outline shall equal to
be the outline of the the engagement face.
f Within 18 millimetres, measured from the engagement face, the outline shall not be
larger than outline of the engagement face.
g  Insulation sleeves on the current-carrying pins are mandatory.
If the insulating sleeves are separate parts, they shall enter the plug  ≥ 3 mm
(measured from the engagement face).
   - 7 -
h  The external diameter of the insulating sleeves shall not be larger than the diameter of
the unisulated part of the pins.
i To avoid damage to the shutters, the end of the pins shall be smoothly rounds.
j The angle of 90 ° represents the maximum permissible angle for the orientation of the
cable entry of the axis of the plug.
k The edge of the insulated part of the pins shall be smoothly rounds. The distance
between the uninsulated part of the pin and the insulated sleeves may not more than
0.2 mm.
 
Figure 2  Dimensions and configuration of two-pole  plug without earthing contact
for appliance class II
(clause 9.101(2))
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   - 8 -
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
          Dimensions in millimetres
Figure explanation
 
c It shall not be possible to make a single-pole insertion.
Note Single-pole insertion may be prevented by the use of the at least one of the
following means:
-  A sufficiently large cover or cover-plate;
-  Other means for example, shutters.
d  If there is a shutter, this dimension is for the cover-plate, guidance of pins and for the
shutter mechanism.
e Within this thickness, the guidance for the pin shall be at least 1.5 millimeter.
f  The edge of the guidance for the pin shall be rounded 45 degree or the edges shall be
slightly chamber.
The outline of the engagement
face can be adjusted as appropriate
The outline of the engagement
face can be adjusted as appropriate   - 9 -
g The points of first contact with current-carrying contact tube shall be checked by
gauge of figure A.2.
h  The gauge in the figure A.3 is used to check when inserting the plug, the earth
connection is made before the current-carrying pins of the plugs become live, 
When  withdrawing the plug, the current-carrying pins shall separate from their
socket contacts before the earth connection is broken.
i  Socket contacts shall be resilient between 4.0 mm. and 5.0 mm. They may have shape
other than tubular. 
 A suitable shaped entry such as a chamber or radius of 45º is necessary to prevent
damage to the socket contacts when plug is introduced at its most unfavorable angle.
 The resilient test and contact force of the socket is checked by the gauge in A.4
j The symbol   (the symbol No.5019a of IEC 60417) and the letter “L” and “N”
shall be marked on the engagement face of the socket-outlet, for the rewirable socket-
outlet this symbol shall be marked on the inner side of the body of the socket-outlet.
k Within the area of a diameter of 39 millimeters there shall be no any projection from
their engagement face which may be create obstruction  in normal uses except the
symbol and the letter in  clause j
 
Figure 3 Two-pole socket-outlet with earthing contact (round pin)
(clause 9.101(3))
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   - 10 -
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
          Dimensions in millimetres
 
Figure explanation
 
c  It shall not be possible to make a single-pole insertion.
Note Single-pole insertion may be prevented by the use of the at least one of the
following means:
-  A sufficiently large cover or cover-plate;
-  Other means for example, shutters.
d  If there is a shutter, this dimensions is for the cover-plate, guidance of pins and for the
shutter mechanism.
e Within this thickness, the guidance for the pin shall be at least 1.5 millimeter.
f  The edge of the guidance of the pin shall be rounded 45 degree or the edges shall be
slightly chamber.
g The points of first contact with current carrying socket contacts shall be checked by
gauge of figure A.2.
The outline of the engagement
face can be adjusted as appropriate   - 11 -
h  The gauge in the figure A.3 is used to check that when inserting the plug, the earth
connection is made before the current-carrying pins of the plugs become live, 
When  withdrawing the plug, the current-carrying pins shall separate from their
socket contacts before the earth connection is broken.
i  Socket contacts shall be resilient between 4.0 mm. and 5.0 mm. They may have shape
other than tubular. 
 A suitable shaped entry such as a chamber or radius of 45º is necessary to prevent
damage to the socket contacts when plug is introduced at its most unfavorable angle.
 The resilient test and contact force of the socket is checked by the gauge in A.4
j  The symbol   (the symbol No.5019a of IEC 60417) and the letter “L” and “N”
must be marked on the engagement face of the socket-outlet, for the rewirable socket-
outlet this symbol shall be marked on the inner side of the body of the socket-outlet.
k Within the area of a diameter of 39 millimeters there shall be no any projection from
their engagement face which may be create obstruction in normal uses except the
symbol and the letter in  clause j
 
Figure 4 Two-pole socket-outlet with earthing contact (flat-round pin)
(clause 9.101(3))
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   - 12 -
10. Protection against electric shock
This clause of TIS 2162 clause 10. is applicable
 
11. Provision for earthing
 
This clause of TIS 2162 clause 11. is applicable
 
12. Terminals
 
This clause of TIS 2162 clause 12. is applicable
13. Construction of fixed socket-outlets
This clause of TIS 2162 clause 13. is applicable
14. Construction of plugs and portable socket-outlets
This clause of TIS 2162 clause 14. is applicable
15. Interlocked socket-outlets
This clause of TIS 2162 clause 15. is applicable
16. Resistance to aging, to harmful ingress of water and to humidity
This clause of TIS 2162 clause 16. is applicable
17. Insulation resistance and electric strength
This clause of TIS 2162 clause 17. is applicable
18. Operation of earthing contact
This clause of TIS 2162 clause 18. is applicable
19. Temperature rise
This clause of TIS 2162 clause 19. is applicable   - 13 -
20. Breaking capacity
This clause of TIS 2162 clause 20. is applicable
21. Normal operation
This clause of TIS 2162 clause 21. is applicable
22. Force necessary to withdrawn the plug
This clause of TIS 2162 clause 22. is applicable
23. Flexible cable and their connection
This clause of TIS 2162 clause 23. is applicable
24. Mechanical strength
This clause of TIS 2162 clause 24. is applicable
25. Resistance to heat
This clause of TIS 2162 clause 25. is applicable
26. Screws, current-carrying parts and connections
This clause of TIS 2162 clause 26. is applicable
27. Creepage distances, clearances and distances through sealing compound
This clause of TIS 2162 clause 27. is applicable
28. Resistance of insulating material to abnormal heat, to fire and to tracking
This clause of TIS 2162 clause 28. is applicable
29. Resistance to rusting
This clause of TIS 2162 clause 29. is applicable   - 14 -
30. Additional tests on pins provided with insulating sleeves
This clause of TIS 2162 clause 30. is applicable
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   - 15 -
Appendix A
Gauge
(clause 9.101)
The gauge in figure A.1 to A.5 are used to check dimensions of the socket-outlet and the
gauge in figure A.6 to A.7 are used to check pulling force, in case of socket-outlet the
gauge in Fig. 8 to Fig.10 are used additionally.
         Dimension in millimeters
 
The test is made by mounting the engagement face in a horizontal plane and open the
openings.
 
The gauge is applied in every possible positions. It shall not  possible to tough a contact
tube with one gauge pin only. 
 
The use of electrical indicator with its voltage not less than 40 V and not more than 50 V
in the contact test.
 
The gauge shall be made of non corrosive metal and have enough mechanical strength for
example stainless steel and its mass shall be 200±5 g.
Figure A.1 Gauge for checking impossibility of single-pole insertion of plugs
(clause 9.101)   - 16 -
 
 
 
 
 
 
 
 
 
 
         Dimension in millimeters
The shutter is opened during the test.
Metal parts of the gauge A gauge B and gauge C must be made of non corrosive metal
(for example stainless steel)
The use of electrical indicator with its voltage not less than 40 V and not more than 50 V
in the contact test.
When gauge A is inserted completely into entry holes of the socket-outlet in every
possible position until plane X-X contact to the engagement  surface the socket-outlet.
The indicator shall not  light.
When gauge B and C are inserted completely into the socket-outlet.
-  Gauge B , the lamp shall light.
-  Gauge C , the lamp shall not light.
Figure A.2 Gauge for testing the contact of the live contact tube
(clause 9.101)
metal   - 17 -
 
 
 
 
 
 
 
 
 
 
 
        Dimension in millimeters
When the  gauge is inserted completely into entry holes of the socket-outlet in any
angle without using  excessive force, Lamps L2 shall light before Lamps L1 and
L3.
When the gauge is  withdrawn from the socket-outlet the light L1 and L3 shall go
out before lamp L2
The gauge  must be made of non corrosive metal (for example stainless steel)
Figure A.3 Gauge for testing the contact of the earthing  contact before live contact
(clause 9.101)
 
 
Voltage between
40-50 volts   - 18 -
gauge A weight
 mm g
C1 4.95 + 0.05 400 + 5
C2 4.74 + 0.05 200 + 5
C3 4.0 + 0.05 200 + 5
 
 
 
 
 
 
 
 Dimension in millimeters
 
The shutter is opened during the test.
 
Before the test the pin is wiped free from the grease.
 
The gauge C1 is inserted into the socket-outlet with a maximum force of 50 N
perpendicularly to the engagement face of the socket-outlet, the gauge shall not come out
with its own weight. The socket-outlet is placed in most unfavorable position.
 
After this, the gauge C2 is inserted into the socket-outlet, the gauge shall not come out
with its own weight. The socket-outlet is placed in most unfavorable position.
 
After this, the gauge C3 is inserted into the socket-outlet, the gauge shall not come out
with its own weight. The socket-outlet is placed in most unfavorable position.
Figure A.4 Gauge for testing resilience test and contact force of the contact tube.
(clause 9.101)
Max Max  - 19 -
 
 
 
 
 
 
 
   
   Dimension in millimeters
(1) Gauge for round pin socket-outlet and flat-round pin socket-outlet
 
 
 
 
 
 
 
   
    Dimension in millimeters
(2) Gauge for flat-round pin socket-outlet
The gauge must be made of non corrosive metal (for example stainless steel)
Figure A.5 Gauge for initial testing dimensions of the socket-outlet
(clause 9.101)   - 20 -
 
 
 
 
 
 
 
 
 
         Dimension in millimeters
The gauge must be made of non corrosive metal (for example stainless steel)
Figure A.6 Gauge for testing maximum  withdrawal force
(clause 22.)
 
 
 
 
 
 
   - 21 -
 
 
 
 
 
 
 
 
 
 
        Dimension in millimeters
c The length shall be enough for its weight equals the specified withdrawal force
The gauge must be made of non corrosive metal (for example stainless steel)
Figure A.7 Gauge for testing minimum withdrawal force
(clause 22.)
 
 
 
 
   - 22 -
 
 
 
 
 
 
 
 
 
         Dimension in millimeters
When the gauge is inserted completely and perpendicular to the engagement face of the
socket-outlet. The L1 L2 and L3 lamps shall light.
When gauge is inserted completely into entry holes of the socket-outlet in any angle
without using excessive force Lamps L2 shall light before Lamps L1 and L3.
When the gauge is withdrawn from the socket-outlet the light L2 and L3 shall go out
before lamp L1
The gauge must be made of non corrosive metal (for example stainless steel).
Figure A.8 Gauge for testing earthing contact  is made before the current-carrying 
contacts  for flat-round pin  socket-outlet
(clause 9.101)
 
 
Max
Max   - 23 -
 
 
 
 
 
 
 
 
 
 
 
         Dimension in millimeters
c The length shall be enough for adding weight at 50 mm height.
This figure is intended for showing dimensions and configuration only.
The gauge must be made of non corrosive metal (for example stainless steel).
Figure A.9 Gauge for testing maximum  withdrawal force for flat-round pin socket-
outlet.
(clause 22.)
 
 
 
Additional weight
Rounded
hole   - 24 -
 
 
 
 
 
 
 
 
 
 
          Dimension in millimeters
c  The length shall be enough for its weight which equals the specified withdrawal
force.
This figure is intended for showing dimensions and configuration only.
The gauge must be made of non corrosive metal (for example stainless steel).
Figure A.10 Gauge for testing minimum  withdrawal force of current-carrying 
pole for flat-round pin socket-outlet
(clause 22.)