| Standardization field | Electrical engineering
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| Technical committee | BAS/TC 52- Controlgear and switchgear installation |
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| Term (EN) | busbar trunking thermal expansion unit - thermal expansion BTU |
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| Definition (EN) | BTU intended to permit a certain movement in the axial direction of the BT run due to thermal expansion of the system |
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| Term (FR) | |
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| Definition (FR) | |
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| Term (DE) | |
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| Definition (DE) | |
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| Term (BS) | jedinica toplotne ekspanzije sabirničkog kanala - toplotna ekspanzija BTU |
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| Definition (BS) | BTU namijenjen za dopuštanje određenog pomaka u aksijalnom smjeru kretanja BT-a zbog toplotnog širenja sistema |
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| Term (HR) | |
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| Definition (HR) | |
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| Term (SR) | |
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| Definition (SR) | |
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| Date | 2025-01-16 |
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| Standards | BAS EN 61439-6:2025 |
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