Vascat MAC-HS 100, Руководство по эксплуатации и обслуживанию

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OPERATION AND MAINTENANCE MANUAL
MAC-HS MOTORS
PAGE: 27
CODE: CTT32 EDITION: 04 RELEASE: SEPTEMBER 2020
Subject to technical changes without prior notice
3.7 Electrical specifications
3.7.1 Windings and insulation
MAC-HS motor coil windings are made up of copper wires with two coats of polyamide varnish > 220°C and/or THEIC-
Polyesterimide with Amide-Imide > 200°C, rated with H-type insulation class.
They are impregnated or encapsulated using single-component epoxy resins that polymerise on the basis of temperature, also
class H.
The windings are insulated from the stator core using NMN sandwich-type paper (Nomex-Mylar-Nomex). The outer parts of the
sandwich (Nomex) are fibres, whereas the core (Mylar) is a plastic film of polyethylene terephthalate. Special care is also taken
with the insulation between each phase.
This insulation system guarantees appropriate dielectric resistance for the motor to work with frequency converters, even on the
most critical applications.
3.7.2 Connections
The connections between the windings and the terminal box are made using a flexible cable coated with ETFE (150ºC) for motors
up to 160mm of shaft height and with FEP(200ºC) for bigger sizes. The connections are welded using a FUSBAT650 rod. The
welds of the contacts are also protected by a double layer of fiberglass insulation pipe with class-H acrylic impregnation.