Why use TIS. (Thai Industrial Standard) power plug?
Adapter power plug is considered as a device with many components such as power cord,
electric socket, plug, power strip and electric switch, which mostly has the standard just
only the power cord according to the mandatory standard of TISI. 11-2553. Manufacturers and
import manufacturers show TISI mark on the products. However, this can create
misunderstanding for consumers that the products are safe and standardized. Also, house fire
problem from adapter power plug, so TISI or Thai Industrial Standard Institute set up TIS.
2432-2555, to control and enforce adapter power plug products, which became effective since
24th February 2018. TIS. power plug according to this requirement is to protect the safety
of consumers and also protect against non-standard imported products.
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How to choose the power plug that meet TIS standard?
Choosing a safe power plug, including USB power plug without worry. You can choose power
plug according to TISI. standard by observing different parts of it.
Electric socket
Must be a 3-hole
socket with Thai standard ground terminals. Universal electric socket is unable to use. Most
of all, it should have shutter. When plugging in a single plug pin, the plug cannot be
plugged in. Must put in all plug pins at the same time. In addition, must have a clear
electrical current sign.
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Plug according to the TIS.
standard Must be 3 round pins which is a 2-pole socket with ground terminal and with
electrical insulation at the base of the plug pin, to prevent direct contact from users. All
3 plug pins must be firm, cannot spin out. An electric force for plug and socket must be
equal. An electric current of plug should not be less than the socket. The plug should have
the manufacturer trademark symbol, product code, defined nominal voltage rate, electric
current, and including the electrical pathway symbol, and TIS. no. 166-2549 as well.
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Choosing power plug, observe the power cable
Must be power cable that has 3 round pins. The power voltage should not be lower than the
socket and plug. The power cable should have the manufacturer trademark symbol, power cable
type code, defined nominal voltage rate, number of cores and cross-sectional area, maximum
temperature on the power cable and TIS. no. 11-2553.
Over electric current protection device
If there are 3 or more electric sockets, you must have an over electric current protection
device, but not fuse. Compatible device can be Circuit Breaker or Circuit Switch. And the
defined voltage of an over electric current protection device should not be more than the
defined voltage of the power strip as well.
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The switch on power strip
An optional accessory on the power strip as same as USB hub on USB power plug. If there are
switches on the power strip, therefore, it should have compulsory standards according to
TIS. 824-2551 or IEC61058.
Marks and labels that must be specified
Must specify electric voltage. Observe the numbers that are amperes and specify the voltage
which is in volts. In addition, the trademark, product model, maximum voltage or number of
watts must also be specified.
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Moreover, TIS. power plug has other details that users should know such as factories must
pass the standard inspection before producing TIS. products. The power strip must be made
from a material that does not fire. The nut must not be a 4-pointed head or flat head. And
the product should have IP20 to prevent foreign matter from size 12.5 mm. to get inside. As
for USB power plug, there is no mandatory standard.
But if you are still confusing and not certain in choosing a safe and standardized power
plug, visit HomePro and HomePro S branches. We have various standard of power plugs and
electrical equipment for you to choose or click to view products at HomePro online
www.homepro.co.th Inquire for more details, contact Call Center 1284.
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