Ambayo Kiwango cha Ushahidi wa Mlipuko Kiko Juu, BT4 au BT6

Kulingana na viwango vya kitaifa vya ulinzi wa mlipuko wa umeme, zote BT4 na BT6 ziko chini ya Daraja la IIB.

Kundi la joto la vifaa vya umeme	Kiwango cha juu cha joto kinachoruhusiwa cha vifaa vya umeme (℃)	Halijoto ya kuwasha gesi/mvuke (℃)	Viwango vinavyotumika vya halijoto ya kifaa
T1	450	= 450	T1~T6
T2	300	＞300	T2~T6
T3	200	＞200	T3~T6
T4	135	＞135	T4~T6
T5	100	＞100	T5~T6
T6	85	＞85	T6

Hata hivyo, the ‘T’ classification pertains to the temperature rating of explosion-proof electrical devices. Vifaa vilivyoainishwa kama T6 lazima vidumishe halijoto isiyozidi 85°C, T5 lazima isizidi 100°C, and T4 must not surpass 135°C.

The lower a device’s maximum surface joto, the less likely it is to ignite atmospheric gases, thereby enhancing safety. Kwa hiyo, the explosion-proof rating of BT6 exceeds that of BT4.