MTR-3 Installation Instructions
DEIF A/S Page 10 of 51
4. Connection
Introduction
This chapter deals with the instructions for connection of the measuring transducer. Both the use
and connection of the device includes handling with dangerous currents and voltages. Only
qualified persons should therefore perform connection. DEIF does not take any responsibility
regarding the use and connection. If any doubt occurs regarding connection and use in the
system, please contact the person or company responsible for such installations.
Before use: check voltages and phase rotation, supply voltage and nominal frequency.
Check protective fuse rating (the recommended maximum rating of the external protective fuse
for this equipment is 6 A - Red Spot type or equivalent).
Mounting
The MTR-3 is designed for DIN rail mounting. It should be mounted on a 35 mm DIN rail by means
of three plastic fasteners. Before installation, fasteners should be in open position (pulled). When
the device is in place, lock (push) the fasteners to closed position.
Electric connection
Voltage inputs of the measuring transducer can be connected directly to a low-voltage network or
via an appropriate voltage measuring transformer to a medium or high voltage network.
Current inputs of the measuring transducer can be connected directly to a low-voltage network or
via a corresponding current transformer.
Choose the corresponding connection from the following figures and connect the corresponding
voltages and currents. Information on electrical characteristics is given in the data sheet.
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