Eaton QD5 User Manual

Removal of control
The control may be removed from the regulator with the
regulator energized. Record settings, etc., to facilitate
replacement of the control.
To open the control, unscrew the captive knob(s) on the left
side of the panel. This allows the control to swing open on
its hinges. With the control open, the back panel is readily
accessible. The design of the control enclosure, back panel,
and control enables easy replacement of the control, leaving
the back panel, control enclosure, and cable intact. To
remove the control, proceed as follows:
WARNING
Flashover Hazard. Push the C shorting switch closed
before attempting to remove the front panel. Failure to
comply can open the regulator CT circuit, producing
a flashover in the control, causing personal injury and
equipment damage. VR-T210.0
1. Push closed the current shorting switch C. This shorts
out the secondary of the regulator CT.
ote:N Regulators shipped with a quick-disconnect cable
contain a solid-state CT monitoring circuit in the
junction box. This device automatically places a
burden on the CT anytime the CT circuit is opened.
For consistency and redundancy, it is recommended
that the CT shorting switch be used whenever it is
present on the back panel.
2. Pull open disconnect switch V1 (and V6 if present). This
de-energizes terminal board TB3 (or TB2 if present).
3. Disconnect the control from the back panel at TB3 (or
TB2 if present), located at the bottom of the back panel.
4. Disconnect the control ground lead from the back
panel.
The control can now be lifted off its hinges. Care should be
taken to prevent damage to a control while in transit and/or
storage.
Replacement of control
WARNING
Flashover Hazard. Do not pull open the current shorting
switch C until the TB3 (or TB2 if present) connection is
completed. Failure to comply can open the regulator CT
secondary and cause a flashover in the control, causing
personal injury and equipment damage. VR-T211.0
To place a control into the control enclosure, follow the
procedure outlined below:
1. Engage control on enclosure hinges.
2. Connect control ground lead to back panel.
3. Reconnect control to back panel at TB3 (or TB2 if
present), located at the bottom of back panel.
4. Push closed the disconnect switch V1 (and V6 if
present).
5. Pull open the current shorting switch C.
6. Close the control and tighten locking screw(s).
18
INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225003EN April 2018
CL-7 Voltage Regulator Control

Eaton QD5 Specifications

General

Brand	Eaton
Model	QD5
Category	Cables and connectors
Language	English