{"id":577,"date":"2024-08-17T17:18:28","date_gmt":"2024-08-17T15:18:28","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=577"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-class-iii-appliance","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/th\/clause-3-how-to-understand-the-definition-of-class-iii-appliance\/","title":{"rendered":"\u0e02\u0e49\u0e2d 3 \u2013 \u0e08\u0e30\u0e40\u0e02\u0e49\u0e32\u0e43\u0e08\u0e04\u0e33\u0e08\u0e33\u0e01\u0e31\u0e14\u0e04\u0e27\u0e32\u0e21\u0e02\u0e2d\u0e07 \u201c\u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e04\u0e25\u0e32\u0e2a III\u201d \u0e44\u0e14\u0e49\u0e2d\u0e22\u0e48\u0e32\u0e07\u0e44\u0e23"},"content":{"rendered":"\u0e2b\u0e21\u0e32\u0e22\u0e40\u0e2b\u0e15\u0e38 \u0e2d\u0e32\u0e08\u0e08\u0e33\u0e40\u0e1b\u0e47\u0e19\u0e15\u0e49\u0e2d\u0e07\u0e43\u0e0a\u0e49\u0e09\u0e19\u0e27\u0e19\u0e1e\u0e37\u0e49\u0e19\u0e10\u0e32\u0e19\u0e40\u0e1e\u0e34\u0e48\u0e21\u0e40\u0e15\u0e34\u0e21\u0e08\u0e32\u0e01\u0e01\u0e32\u0e23\u0e08\u0e31\u0e14\u0e2b\u0e32\u0e17\u0e35\u0e48 SELV \u0e2d\u0e49\u0e32\u0e07\u0e16\u0e36\u0e07 8.1.4.
\u0e04\u0e33\u0e27\u0e48\u0e32 “\u0e04\u0e27\u0e32\u0e21\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22” \u0e23\u0e27\u0e21\u0e2d\u0e22\u0e39\u0e48\u0e43\u0e19\u0e04\u0e33\u0e2a\u0e35\u0e48\u0e04\u0e33 “\u0e04\u0e27\u0e32\u0e21\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22\u0e41\u0e23\u0e07\u0e14\u0e31\u0e19\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e15\u0e48\u0e33\u0e1e\u0e34\u0e40\u0e28\u0e29” \u0e41\u0e15\u0e48\u0e44\u0e21\u0e48\u0e44\u0e14\u0e49\u0e2b\u0e21\u0e32\u0e22\u0e04\u0e27\u0e32\u0e21\u0e27\u0e48\u0e32 SELV \u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22 \u0e41\u0e25\u0e30\u0e44\u0e21\u0e48\u0e08\u0e33\u0e40\u0e1b\u0e47\u0e19\u0e15\u0e49\u0e2d\u0e07\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e2a\u0e31\u0e21\u0e1c\u0e31\u0e2a\u0e42\u0e14\u0e22\u0e15\u0e23\u0e07 \u0e40\u0e09\u0e1e\u0e32\u0e30\u0e27\u0e07\u0e08\u0e23\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e41\u0e23\u0e07\u0e15\u0e48\u0e33\u0e1e\u0e34\u0e40\u0e28\u0e29\u0e14\u0e49\u0e32\u0e19\u0e04\u0e27\u0e32\u0e21\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22\u0e17\u0e35\u0e48\u0e40\u0e1b\u0e47\u0e19\u0e44\u0e1b\u0e15\u0e32\u0e21\u0e02\u0e49\u0e2d\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e21\u0e32\u0e15\u0e23\u0e10\u0e32\u0e19\u0e02\u0e49\u0e2d 8.1.4 \u0e40\u0e17\u0e48\u0e32\u0e19\u0e31\u0e49\u0e19\u0e17\u0e35\u0e48\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e2a\u0e31\u0e21\u0e1c\u0e31\u0e2a\u0e44\u0e14\u0e49\u0e42\u0e14\u0e22\u0e15\u0e23\u0e07 \u0e40\u0e23\u0e32\u0e08\u0e30\u0e27\u0e34\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e41\u0e25\u0e30\u0e2d\u0e18\u0e34\u0e1a\u0e32\u0e22\u0e2a\u0e34\u0e48\u0e07\u0e19\u0e35\u0e49\u0e42\u0e14\u0e22\u0e40\u0e09\u0e1e\u0e32\u0e30\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e27\u0e34\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e02\u0e49\u0e2d 8.1.4.<\/em>
\n\u0e1e\u0e31\u0e14\u0e25\u0e21\u0e17\u0e35\u0e48\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19\u0e20\u0e32\u0e1e\u0e14\u0e49\u0e32\u0e19\u0e25\u0e48\u0e32\u0e07\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e40\u0e1b\u0e47\u0e19\u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e04\u0e25\u0e32\u0e2a III \u0e44\u0e14\u0e49 \u0e2d\u0e22\u0e48\u0e32\u0e07\u0e44\u0e23\u0e01\u0e47\u0e15\u0e32\u0e21 \u0e1e\u0e31\u0e14\u0e25\u0e21\u0e0a\u0e19\u0e34\u0e14\u0e19\u0e35\u0e49\u0e21\u0e35\u0e2a\u0e2d\u0e07\u0e2b\u0e39 \u0e0b\u0e36\u0e48\u0e07\u0e17\u0e33\u0e43\u0e2b\u0e49\u0e44\u0e21\u0e48\u0e40\u0e1b\u0e47\u0e19\u0e44\u0e1b\u0e15\u0e32\u0e21\u0e02\u0e49\u0e2d 22.44 \u0e40\u0e23\u0e32\u0e08\u0e30\u0e2d\u0e18\u0e34\u0e1a\u0e32\u0e22\u0e23\u0e32\u0e22\u0e25\u0e30\u0e40\u0e2d\u0e35\u0e22\u0e14\u0e43\u0e19\u0e20\u0e32\u0e22\u0e2b\u0e25\u0e31\u0e07
\n
\nThe word “safety” is included in the four words “safety extra low voltage”, but this does not mean that SELV is safe, and it is not necessarily safe to touch directly. Only safety extra low voltage circuits that meet the requirements of standard 8.1.4 can be touched directly. We will specifically analyze and explain this when analyzing clause 8.1.4.
\n
\nThe fan shown in the figure below can be defined as a class III appliance<\/strong><\/a>. However, this fan has two ears, which makes it not compliant with clause 22.44. We will explain the details later.
\n

\n\"\"
\n<\/figure>","protected":false},"excerpt":{"rendered":"

\u0e2b\u0e21\u0e32\u0e22\u0e40\u0e2b\u0e15\u0e38 \u0e2d\u0e32\u0e08\u0e08\u0e33\u0e40\u0e1b\u0e47\u0e19\u0e15\u0e49\u0e2d\u0e07\u0e43\u0e0a\u0e49\u0e09\u0e19\u0e27\u0e19\u0e1e\u0e37\u0e49\u0e19\u0e10\u0e32\u0e19\u0e40\u0e1e\u0e34\u0e48\u0e21\u0e40\u0e15\u0e34\u0e21\u0e08\u0e32\u0e01\u0e01\u0e32\u0e23\u0e08\u0e31\u0e14\u0e2b\u0e32\u0e17\u0e35\u0e48 SELV \u0e2d\u0e49\u0e32\u0e07\u0e16\u0e36\u0e07 8.1.4.\u0e04\u0e33\u0e27\u0e48\u0e32 “\u0e04\u0e27\u0e32\u0e21\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22” \u0e23\u0e27\u0e21\u0e2d\u0e22\u0e39\u0e48\u0e43\u0e19\u0e04\u0e33\u0e2a\u0e35\u0e48\u0e04\u0e33 “\u0e04\u0e27\u0e32\u0e21\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22\u0e41\u0e23\u0e07\u0e14\u0e31\u0e19\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e15\u0e48\u0e33\u0e1e\u0e34\u0e40\u0e28\u0e29” \u0e41\u0e15\u0e48\u0e44\u0e21\u0e48\u0e44\u0e14\u0e49\u0e2b\u0e21\u0e32\u0e22\u0e04\u0e27\u0e32\u0e21\u0e27\u0e48\u0e32 SELV \u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22 \u0e41\u0e25\u0e30\u0e44\u0e21\u0e48\u0e08\u0e33\u0e40\u0e1b\u0e47\u0e19\u0e15\u0e49\u0e2d\u0e07\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e2a\u0e31\u0e21\u0e1c\u0e31\u0e2a\u0e42\u0e14\u0e22\u0e15\u0e23\u0e07 \u0e40\u0e09\u0e1e\u0e32\u0e30\u0e27\u0e07\u0e08\u0e23\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e41\u0e23\u0e07\u0e15\u0e48\u0e33\u0e1e\u0e34\u0e40\u0e28\u0e29\u0e14\u0e49\u0e32\u0e19\u0e04\u0e27\u0e32\u0e21\u0e1b\u0e25\u0e2d\u0e14\u0e20\u0e31\u0e22\u0e17\u0e35\u0e48\u0e40\u0e1b\u0e47\u0e19\u0e44\u0e1b\u0e15\u0e32\u0e21\u0e02\u0e49\u0e2d\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e21\u0e32\u0e15\u0e23\u0e10\u0e32\u0e19\u0e02\u0e49\u0e2d 8.1.4 \u0e40\u0e17\u0e48\u0e32\u0e19\u0e31\u0e49\u0e19\u0e17\u0e35\u0e48\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e2a\u0e31\u0e21\u0e1c\u0e31\u0e2a\u0e44\u0e14\u0e49\u0e42\u0e14\u0e22\u0e15\u0e23\u0e07 \u0e40\u0e23\u0e32\u0e08\u0e30\u0e27\u0e34\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e41\u0e25\u0e30\u0e2d\u0e18\u0e34\u0e1a\u0e32\u0e22\u0e2a\u0e34\u0e48\u0e07\u0e19\u0e35\u0e49\u0e42\u0e14\u0e22\u0e40\u0e09\u0e1e\u0e32\u0e30\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e27\u0e34\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e02\u0e49\u0e2d 8.1.4. \u0e1e\u0e31\u0e14\u0e25\u0e21\u0e17\u0e35\u0e48\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19\u0e20\u0e32\u0e1e\u0e14\u0e49\u0e32\u0e19\u0e25\u0e48\u0e32\u0e07\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e40\u0e1b\u0e47\u0e19\u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e04\u0e25\u0e32\u0e2a III \u0e44\u0e14\u0e49 \u0e2d\u0e22\u0e48\u0e32\u0e07\u0e44\u0e23\u0e01\u0e47\u0e15\u0e32\u0e21 \u0e1e\u0e31\u0e14\u0e25\u0e21\u0e0a\u0e19\u0e34\u0e14\u0e19\u0e35\u0e49\u0e21\u0e35\u0e2a\u0e2d\u0e07\u0e2b\u0e39 \u0e0b\u0e36\u0e48\u0e07\u0e17\u0e33\u0e43\u0e2b\u0e49\u0e44\u0e21\u0e48\u0e40\u0e1b\u0e47\u0e19\u0e44\u0e1b\u0e15\u0e32\u0e21\u0e02\u0e49\u0e2d 22.44 \u0e40\u0e23\u0e32\u0e08\u0e30\u0e2d\u0e18\u0e34\u0e1a\u0e32\u0e22\u0e23\u0e32\u0e22\u0e25\u0e30\u0e40\u0e2d\u0e35\u0e22\u0e14\u0e43\u0e19\u0e20\u0e32\u0e22\u0e2b\u0e25\u0e31\u0e07 The word “safety” is included in the four words “safety extra low voltage”, but this does not mean that SELV is safe, and it is not necessarily safe to 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