ABB MV Service
© ABB Group - 1 8-Apr-15
Medium Voltage Hard
Bus Retro-fill
© ABB Group - 2 8-Apr-15
Medium Voltage Retro-fill

Process

Product

Before and After

Safety

New Technology

Q and A
Medium Voltage Retro-fill

The Process
© ABB Group - 3 8-Apr-15
- Site Verification Visit for Engineering Measurements – An ABB design
engineer visits the site to obtain measurements of the existing equipment
for the purpose of designing all of the components necessary for the retrofill (door, barriers, dead front, bus, etc.) in order to incorporate the L-Frame
into the existing switchgear cubicle. A one (1) day outage is required for
these measurements.
- Custom Component Design Engineering and Manufacture – ABB’s design
engineer will design any components deemed necessary for an effective
and efficient retro-fill. Approval drawings will NOT be generated, but rather
we will supply mechanical conceptual drawings, and control diagrams.
Some components, such as the copper bus connectors between the LFrame and the existing switchgear cross bus, may be designed on-site
during the retro-fill by the ABB Field Engineer in the performance of the
installation. The designed components will be manufactured and either
shipped to the site or brought to the site by the Field Engineer. Upon
completion a full set of as built drawings will be supplied.
Medium Voltage Retro-fill
- Shipment of Standard Materials – Circuit breakers, L-Frames, CT’s,
Kirk Key Locks, etc. are shipped to the site, with their arrival verified
prior to dispatching ABB Field Engineers to the site to perform the
retro-fill.
- Demolish Existing Cubicle Contents – ABB’s Field Engineers will
remove the old breaker, racking components, and any other
unnecessary items from the cubicle, effectively gutting the cubicle
for unimpeded access to the cross bus.
© ABB Group - 4 8-Apr-15
- Installation of L-Frame – ABB’s Field Engineers will incorporate the
L-Frame, CTs, barriers, dead front, new door with indicating lights,
breaker control switches, etc., into the existing cubicle, connecting
the switchgear bus to the L-Frame’s primaries with appropriately
sized and braced copper bus.
Medium Voltage Retro-fill
© ABB Group - 5 8-Apr-15

Installation and Commissioning of the New ABB Advac Circuit
Breakers – The new circuit breakers will be racked into the L-Frame
and commissioned (verification of safety interlocks operation,
verification of open, close, motor charging operation, verification
that breakers lever easily into or out of their switchgear
compartment cell, testing for vacuum integrity, plus operational and
vacuum interrupter technology training for the end user operators.)Complete outage with LO/TO and grounds per DLCo procedures
Medium Voltage Retro-fill

The Product
- The new Breaker and L-Frame will be ABB Advac.
- Current production
- Spare parts readily available for customer stock
- Closed Door racking
- Option for remote racking if required
© ABB Group - 6 8-Apr-15
- Interchangeability
© ABB Group - 7 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 8 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 9 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 10 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 11 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 12 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 13 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 14 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 15 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 16 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 17 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 18 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 19 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 20 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 21 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 22 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 23 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 24 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 25 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 26 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 27 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 28 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 29 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 30 8-Apr-15
Medium Voltage Retro-fill
© ABB Group - 31 8-Apr-15
Medium Voltage Retro-fill
Medium Voltage Retro-fill

OPERATIONAL SAFETY
© ABB Group - 32 8-Apr-15
The process of racking a circuit breaker into and out of the connected
position is one of the most frequent exercises that expose an
operator to risk. Increased focus on operator safety has caused
owners to question the adequacy of prior switchgear designs that
require the cell door to be open in order to connect or disconnect
the primary circuit and the secondary control circuit. A malfunction
during this operation has the potential for catastrophic
consequences to equipment and personnel. Supervised, closed
door circuit breaker racking is a fundamental recognized safety
practice. Furthermore, older breakers are more complex and
vulnerable to mechanical failures that create safety problems.
Installed applications






















© ABB Group - 33 8-Apr-15

Westinghouse:
B-22-B
B-28-B
138-B-250
B-28-B Vertical
B-22-B Vertical
McGraw Edison
5-WSA-250
PSD-5-251
General Electric
FKR-225
FK-225
FK-32-C
FK-32-C
F-100
FK-143
AKR-30 (stationary)
Allis Chalmers
DZ-60
DZ-80
DZ-100
Federal Pacific
DMB-75