Installing The Supervisory Link And Analog Output Cable - GE Hydran 201i Instruction Manual

Hydran* 201i Instruction Manual
• Conduits, or cable armors, should be made of steel to shield against magnetic
fields.
• Non-conducting conduit fittings (made of plastic, for example) can be used on
the connection box if ground loops through the conduits may cause problems
(for example, if the transformer tank is grounded at a single point and
monitored continuously for tank-to-ground currents).
The procedure is as follows:
1. Remove the cover from the connection box located under the brass adaptor.
2. As required, install one or two watertight conduit fittings (not supplied) onto the
connection box.
• One conduit is used to run the supervisory link cable (which connects the
H201Ti to the Hydran 201Ci Controller) and, if used, the cable of the H201Ti's
analog output.
• One conduit is used to run the power supply cable and, if used, the cable of
the H201Ti's alarm contacts.
3. Mount a conduit to each fitting.
Note: The AC power to the H201Ti can be supplied from the H201Ci-1 Controller (via
terminals 4 to 6 of the main terminal block) or from a different source. The H201Ci-C
does not have terminals used to supply power to the H201Ti.
4. Ground the conduits and/or cable shields at some point. Follow the company
regulations meticulously.
WARNING

7.3.9 Installing the Supervisory Link and Analog Output Cable

Note the following considerations prior to installing:
• The supervisory link cable is supplied only when the Hydran 201Ti is part of a
RS-485 daisy chain network or Hydran 201R Model i or is ordered with a
Hydran 201Ci-C Controller.
• A supervisory link cable connected to an H201Ci-1 requires three twisted pairs
and an overall shield.
• A supervisory link cable connected to an H201Ci-C requires two twisted pairs
and an overall shield.
• If, for special considerations, the H201Ti's analog output is used, select a cable
with characteristics similar to the supervisory link cable but with an additional
pair of wires.
MA-033 Rev. 14.0, 12-Nov-18
The H201Ti must always be grounded, even if the transformer
tank is grounded at a single point and monitored for tank-to-
ground currents.
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