YBU/YBUS/YBUD series flameproof three-phase asynchronous motors for tunnel boring machines are flameproof three-phase asynchronous motors developed according to market demand. The explosion-proof performance of this series of motors complies with the provisions of IEC/CE standards, and the explosion-proof mark is Exd II BT4, which is suitable for places where explosive gas mixtures exist. It is widely used in tunnel excavation work in various complex environments.
Frequently Asked Questions
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What applications are YBU/YBUS/YBUD series motors suitable for?
These flameproof three-phase asynchronous motors are specifically developed for tunnel boring machines and are widely applied in tunnel excavation work within various complex and demanding environments.
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What are the explosion-proof certifications and markings for these motors?
The explosion-proof performance complies with standard IEC/CE requirements. The general series carries the Exd II BT4 mark, suitable for explosive gas mixtures, while the standard configuration for tunnel boring machine use carries the ExdI Mb explosion protection mark.
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What rated voltages and frequencies are supported?
The motors support rated voltages of 660/1140V, 1140V, and 3300V, running at a rated frequency of 50Hz.
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What cooling methods and protection levels do these motors feature?
They feature an IP55 protection level to prevent dust and water ingress. The cooling system uses the IC3W7 water-cooling method, designed for ambient air temperatures ranging from 0 to +40℃.
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What are the installation options and thermal classifications?
The standard installation configuration is IMB10. The motor thermal insulation class is 180(H) with a strict temperature rise limit of 135K for enhanced operation safety.
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