Eaton 600 A 15 kV class push-OP Installation, Operation And Maintenance Instructions

Connecting power to external source terminals
240 Vac applications to Eaton 240 V control
Option 1:
Control Box Assembly/Panel connected to earth ground
to provide protection to operations personnel (typical
field application where control is mounted on grounded
Regulator tank or dropped down pole with control box
grounded properly).
The 240 Vac Eaton control cabinet utilizes a 240 Vac to
120 Vac (2:1) auto transformer inside the control cabinet
(on the back panel). This transformer steps down the
240 Vac external supply to provide 120 Vac to the control
panel. Inside the CL-6 control, the neutral and ground are
connected in several locations. Care should be taken when
applying external power.
The 240 Vac external source must be completely isolated.
In most cases an isolation transformer is needed. This
isolation transformer must isolate both the neutral and line
on the secondary side. Also, the neutral and ground on
the secondary side should not be bonded or connected.
To check isolation from earth ground, check the continuity
of each lead on the isolation transformer with respect to
ground (G). Check this before connecting the leads to the
control panel. See Figure 1-2.
The control panel assembly is grounded through the
tank or a separate grounding strap. Earth ground of the
isolation transformer is not connected to the control. The
only source of earth ground reference on secondary of
isolation transformer is through the control box connection
to ground.
Option 2:
Control Box Assembly floating (typical shop or lab
application where control is mounted on ungrounded
regulator tank or sitting on workbench).
Eaton offers an optional control configuration that accepts
240 Vac external power. In this configuration, a 240 Vac to
120 Vac (2:1) auto transformer is installed inside the control
cabinet (on the back panel). This transformer steps down
the 240 Vac external supply to provide 120 Vac to the control
panel. Inside the CL-6 control, the neutral and ground are
connected in several locations.
The 240 Vac external source must be completely isolated.
In most cases an isolation transformer is needed. This
isolation transformer must isolate both the neutral and line
on the secondary side. Also, the neutral and ground on
the secondary side should not be bonded or connected.
To check isolation from earth ground, check the continuity
of each lead on the isolation transformer with respect to
ground (G). Check this before connecting the leads to the
control panel. See Figure 1-3.
In this case, the ground of the isolation transformer is
connected to the green terminal post on the CL-6 series
control. In this configuration, the only source of earth
ground reference on the secondary side of the isolation
transformer is through the control box connection to the
isolation transformer ground.
4
CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Eaton 600 A 15 kV class push-OP Specifications

General

Brand	Eaton
Model	600 A 15 kV class push-OP
Category	Cables and connectors
Language	English