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Slip Rings

Copper Three Phase Motor Slip Ring

Part No. Copper Three Phase Motor Slip Ring

Copper slip-ring (collector ring) set for three-phase wound-rotor induction motors — 200 kW / 1500 rpm (4-pole, 50 Hz) YR-class duty. Three copper rings feed rotor current to external resistors via brushes; ring dimensions and rotor voltage to be confirmed from the motor nameplate/drawing.

Application	Collector (slip) ring set for three-phase wound-rotor induction motors — the copper rings feed rotor current to/from the external starting resistors via brushes: 200 kW / 1500 rpm (4-pole, 50 Hz) YR-series motors, crane and metallurgical slip-ring mot
Voltage	Motor-rated low-voltage class 380/400/415/440/460/480/550/660/690 V (1140 V
Speed	1500 rpm rated (4-pole @ 50 Hz synchronous; running speed slightly lower und
Connection	3 copper rings keyed/insulated on the rotor shaft; rotor winding leads connect to the rings; brushes ride on the rings a

Compatible Models

YR355M1-4 (200 kW 4-pole IP23) — verified frame reference YR2-355M1-4 / YR3-355M1-4 (200 kW IP54) YR series low-voltage wound-rotor motors (frame 280–315 55–220 kW 4/6/8/10/12-pole)

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Technical Specifications

Copper Three-Phase Motor Slip Ring — 200 kW / 1500 rpm
Specification	Value
Product Type	Copper slip ring (collector ring) assembly for three-phase wound-rotor motor
Rings	3 (three-phase rotor circuit)
Material	Copper
Motor Duty	200 kW, 1500 rpm (4-pole, 50 Hz), YR-class wound-rotor motor
Frame Reference	YR355-4 (YR355M1-4 / YR2 / YR3)
Voltage	Low-voltage class 380–690 V (1140 V available); rotor voltage per nameplate
Speed	1500 rpm rated (4-pole @ 50 Hz)
Ring Dimensions	Not specified — confirm OD / bore / width from drawing
Rotor Current	Not specified — confirm from nameplate
Application	YR / YR2 / YR3 series; YZR / JZR2 crane & metallurgical motors

* Motor power/speed and ring material user-provided; frame reference cross-verified from YR-series catalogs. Ring dimensions and rotor electrical data pending confirmation.

Compatible Models

This Copper Three Phase Motor Slip Ring is designed as a direct replacement for the following machine models and series:

YR355M1-4 (200 kW 4-pole IP23) — verified frame reference YR2-355M1-4 / YR3-355M1-4 (200 kW IP54) YR series low-voltage wound-rotor motors (frame 280–315 55–220 kW 4/6/8/10/12-pole) YR2 series (frame 132–450 3–800 kW) YZR / JZR2 crane & metallurgical wound-rotor motors (collector ring assemblies)

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Description

Overview

Copper slip-ring (collector ring) assembly for three-phase wound-rotor induction motors — 200 kW / 1500 rpm (4-pole, 50 Hz) duty. The three copper rings carry the rotor circuit current between the rotor winding and the external starting resistors through stationary brushes, enabling low starting current and high starting torque.Sealocean