Protective Elements
URTDII Module Interface
URTD
Principle – General Use
The optional Universal Resistance-based Temperature Detector II (URTDII) Module provides temperature data to
the protective device from up to 12 RTDs embedded in the motor, generator, transformer, or cable connector and
driven equipment. The temperature data will be shown as measured values and statistics in the Operating Data
menu. In addition, each channel will be monitored. The measured data provided by the URTDII Module can also
be used for temperature protection (please refer to the Temperature Protection section).
The URTDII conveys multiplexed temperature data back to the relay via a single optical fiber. The URTDII may be
mounted remotely from the protective device. The fiber optic connector is located on the X102 terminal of the
protective device.
Consider the benefit of mounting the URTDII module away from the protective device and as close to the protected
equipment as possible. The big bundle of RTD wires to the protected equipment becomes much shorter. The
URTDII may be placed up to 400 ft (121.9 m) from the protective device with the optical fiber connection. Note that
the URTDII will require a power supply connection at its remote location.
Connect a suitable source to the power terminals J10A-1 and J10A-2 on the URTDII module.
Style Power Supply
URTDII-01 48-240 V AC
48-250 V DC
URTDII-02 24-48 V DC
1106 MCDGV4 DOK-HB-MCDGV4-2E
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