The Y‑series (6 kV) high‑voltage squirrel‑cage electric motor supports full‑voltage direct starting. Where load torque is moderate, reduced‑voltage starting is also feasible. Under reduced‑voltage starting conditions, the motor’s starting torque is approximately proportional to the square of applied voltage. Within permitted mechanical inertia limits, the motor allows two successive cold‑state starts and one continuous hot‑state start.

This Y‑series (6 kV) high‑voltage asynchronous electric motor runs at a rated frequency of 50 Hz, with rated voltage options of 6 kV and 10 kV. Its key features are outlined below:

1. Fully compliant with IEC international standards.
2. Average motor efficiency is 2 % higher compared with legacy‑generation equivalents.
3. Box‑type construction simplifies transportation, field installation and routine maintenance, lowering end‑users’ civil‑engineering investment. Ventilation and protection configurations can be flexibly adjusted to match operational requirements.
4. Stator windings employ Class‑F solvent‑free vacuum‑pressure impregnated insulation systems.
5. End‑cap sliding bearings are fitted with air‑seal and floating labyrinth assemblies to mitigate oil‑leak risks.
6. Squirrel‑cage rotors are available in cast‑aluminum or copper‑bar designs for dependable service.

For ventilation, radial self‑ventilation is adopted: cooling air enters axially through the top hood, circulates through internal motor passages, and exhausts via openings on both sides of the upper hood.

The baseline protection rating for this Y‑series (6 kV) high‑voltage AC electric motor is IP23. Optional upgrades include top‑hood ducted ventilation for IP44 protection. Versions for 4‑ to 12‑pole configurations can be further customised as closed‑circuit air‑to‑air cooled motors (IP44) or climate‑protected IPW24 variants.

The Y‑series (6 kV) high‑voltage squirrel‑cage three‑phase asynchronous electric motor delivers compact footprint, light unit weight, high energy efficiency, low acoustic noise, suppressed vibration, high operational reliability, extended service life and straightforward installation and servicing.

Built with a box‑type frame fabricated from welded steel plates, the motor offers low mass and high structural rigidity. It can be supplied with a top‑mounted hood or side‑panel access openings.

Its stator assembly uses an external press‑fit structure. Stator windings utilise Class‑F insulating materials; 10 kV models incorporate robust corona‑suppression treatments. Winding end sections are securely bound and processed with solvent‑free vacuum‑pressure impregnation (VPI), granting excellent mechanical strength, strong moisture resistance and prolonged operational lifespan. Squirrel‑cage rotors are produced via proven cast‑aluminum or copper‑bar welding workflows and undergo dynamic‑balance testing to guarantee smooth, stable rotation.

Both rolling and plain bearing arrangements are offered, selected according to motor power and rotational speed. Rolling‑bearing units are equipped with on‑line oil‑fill and oil‑drain fittings. The main terminal box is positioned on the motor’s right‑hand side when viewed from the shaft‑extension end; left‑side mounting is available upon request. Separate internal and external grounding terminals are fitted inside the terminal enclosure. Temperature‑sensing modules may be fitted on stator windings, bearings and other critical components for local readouts and remote monitoring, safeguarding stable, secure motor operation.

Product Parameters

This high‑voltage electric motor is intended for ambient conditions between ‑15 °C and +40 °C, at altitudes no higher than 1000 m, for indoor or outdoor sites free of explosive or corrosive atmospheres.

Product Features

The Y‑series (6 kV) high‑voltage three‑phase asynchronous electric motor serves as a drop‑in replacement for older J/JS‑series motors, delivering equal power output within a smaller frame size. Versatile and adaptable, this platform supports multiple derivative motor configurations. Advantages include effective heat dissipation, compact layout, light weight, robust sealing, high efficiency, simple mounting and convenient maintenance. It is a widely‑specified motor solution for diverse industrial working conditions.

Factory Overview

Our motor manufacturing facility follows a green, high‑efficiency and energy‑saving production philosophy. We prioritise eco‑friendly plant operation, enforce strict standardised motor‑manufacturing workflows, and source premium energy‑efficient raw materials to guarantee finished‑product quality.

Customer Visits

We are dedicated to delivering premium‑grade high‑voltage electric motors and supporting services, earning positive feedback from global clients. Every year numerous overseas business delegations tour our production base; on‑site factory audits foster long‑term cooperative partnerships. Prospective buyers are warmly welcomed to visit our works.

Certifications

Our high‑voltage electric motor portfolio holds ISO 9001 quality‑management‑system certification, China CCC and COC approvals, and Chinese energy‑saving product credentials. Products also carry CE, UL, IRIS, CAS and other international certifications. We adhere rigorously to applicable product standards to supply reliable, high‑performance motors and customer services.