User`s guide

V3-T9-256 Volume 3—Power Distribution and Control Assemblies CA08100004E—November 2013 www.eaton.com

9.4

Metering Devices, Protective Relays, Software and Connectivity

Protective Relays

Wiring Diagram

RTD Wiring (Three-Lead Type)

Note

Showing a typical three-lead type RTD wiring connection.

Universal

RTD Module

Do not connect cable’s shield and drain wire

at this end. Use tape to insulate.

Connect cable’s shield

and drain wire here.

Note: Wiring between motor RTDs

and RTD Module must be

three-wire shielded cable.

Unused channels should

be shorted.

1. Each shielded cable’s conductors must be connected on Universal RTD Module as shown.

2. Use of three-lead RTDs is recommended.

3. RTDs must not be grounded at the motor, and no common connections between RTDs should be made at the

Universal RTD Module or the motor.

Terminal 16 or 32 should be connected to a suitable earth ground.

Motor

Bearings

Motor

Windings

Auxiliary

Load

Bearings

Motor terminals