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A TRIPPED CONDITION IS A RESULT OF A
FAULTED POWER CIRCUIT CONNECTED TO THE
EQUIPMENT. FAILURE TO CORRECT SUCH
FAULTED CONDITIONS CAN CAUSE SEVERE
EQUIPMENT OR CABLE DAMAGE, PRESENT
A POTENTIAL FIRE HAZARD AND RESULT IN
DEATH OR PERSONAL INJURY.

IDENTIFY AND CORRECT FAULTED CIRCUIT
BEFORE ATTEMPTING TO RESET TRIPPED
SWITCHES WITHIN THE ATSBI  EQUIPMENT.

TO RESET BYPASS SWITCH

1.

Move appropriate Bypass Switch operating 
handle down to full “OFF” position. This reset 
action may require more downward force than 
used to open the switch only. A correctly reset 
switch will allow the operating handle to remain 
in the full “OFF” position. If the operating handle
remains in a “Midway” position after inital reset 
attempt, the switch is not reset. Try again.

2. The lit “Bypass Tripped” amber light should turn 

off.

3. Move appropriate Bypass Switch operating 

handle up to the “ON” position.

4. Verify that the appropriate “Bypass Energized” 

red light is lit.

NOTE: An Automatic opening of any Moulded
case Switch used in the ATSBI equipment will
only occur if that specific switch is closed in the
power circuit on which a fault occurs. Therefore,
it is only necessary to reset affected switches as
indicated by the lit pilot lights.

OPTIONAL OVERCURRENT PROTECTION AND
SERVICE EQUIPMENT (OPTION 16 AND 17)
(OPTION 37)

The Cutler-Hammer ATSBI equipment can be
optionally (16 and 17) equipped with integral
overcurrent (overload and short circuit) protection. If
selected the standard Moulded Case Switches with
instantaneous short circuit releases are replaced
with conventional circuit breakers equipped with
thermal elements in addition to magnetic releases to
provide overload and short circuit protection to
connected equipment and cables. These circuit
breakers will replace the standard Moulded Case
Switches in the ATS and Bypass Switches only. The
Isolation Switch will only employ Moulded Case
Switches.

Units optionally supplied as service equipment rated
(Option 37) will inlcude this integral overcurrent
protection as standard. The service equipment rated
unit will also have provisions for service disconnect
as required by the NEC. A service disconnect
position is a built in feature of the service equipment
rated Cutler-Hammer ATSBI Switch.

STORAGE

If the ATSBI is to be stored prior to installation it
should be ordered with packaging/crating suitable
for the storage environment both mechanically and
environmentally. The equipment is not designed or
packaged for outdoor storage and warranty will be
withdrawn upon evidence of extended outdoor
exposure. It is strongly suggested that this
equipment be stored in a climate controlled
environment with temperature ranges between -20º
C to 85º C with a relative humidity of 80%
condensation or less.

MAINTENANCE

The ATSBI is maintenance free under normal usage.
Local conditions, however, may make it necessary to
clean the equipment once a year. De-energize all
sources of power and vacuum away any dust, dirt,
or debris that may have accumulated within the
enclosure or on logic components.

Follow recommendations of the Generator
manufacturer as to testing procedures and
frequency of the associated standby set. 

Effective July 2007

12

I.L. 16913A

CAUTION

Summary of Contents for Cutler-Hammer BIHI

Page 1: ...IN INTERLOCKS AND SAFETY FEATURES INTENDED TO PROVIDE SAFE AND PROPER OPERATING SEQUENCES TO PROTECT PERSONNEL ASSOCIATED WITH THE INSTALLATION OPERATION AND MAINTENANCE OF THIS EQUIPMENT THE FOLLOWI...

Page 2: ...ontacting the factory for technical support A ratings nameplate will also be affixed to the switch identifying the withstand interrupting and closing ratings for which the unit is intended DO NOT APPL...

Page 3: ...ency bypass switches are provided to permit bypass to either power source but both bypass switches are interlocked with the isolation switch to positively prevent inadvertent paralleling of sources IN...

Page 4: ...Effective July 2007 3 I L 16913A Fig 2 Note For bottom entry add 14 to depth of unit...

Page 5: ...4 24 610 Single Phase Only DIMENSIONS INCHES MM BYPASS ISOLATION ATS 2 3 POLE DIMENSIONS INCHES MM BYPASS ISOLATION ATS 4 POLE Max Max Switch CSA Amps Volts Frame Bypass Frame A B C D E F G H I J 150...

Page 6: ...or ringing of the conductor strands Prepare stripped conductor termination end by cleaning with a wire brush If aluminum conductors are used apply an appropriate joint compound to the clean conductor...

Page 7: ...ition Connect the engine start wires to the RED terminal blocks marked 51A and 52A A contact closes between these terminal blocks when an engine start signal is provided by either the ATS or Bypass lo...

Page 8: ...Effective July 2007 7 Fig 3 I L 16913A...

Page 9: ...Effective July 2007 Supercedes I L 16913 dated February 1991 8 I L 16913A Fig 3...

Page 10: ...position if not already in normal This DOES NOT indicate a presence of voltage on the ATS power panel since the ATS logic panel senses on the line side of the Bypass switch Utilizing a voltmetre meas...

Page 11: ...osition the Generator control selector switch to the auto start position Additional functional load transfer tests may be desirable including automatic engine start operation See ATS Controller Manual...

Page 12: ...a downstream short circuit condition the ATS logic will engage the Transfer Mechanism to electrically reset the automatically opened switch If optional overcurrent protection option 16 17 or 37 is pro...

Page 13: ...us short circuit releases are replaced with conventional circuit breakers equipped with thermal elements in addition to magnetic releases to provide overload and short circuit protection to connected...

Page 14: ...ntenance agreements for our ATSBI product In most instances such maintenance agreements also extends warranty periods Contact your local Cutler Hammer Representative for more information on factory su...

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