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PowerCommand®
Medium VoltageDigital Paralleling Systems
D
i g i t
a l
P
a r a
l l e l i
n g
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THE POWER OF ONE™
Traditional power systems often combine engines, alternators, controls,paralleling
equipment, and switchgear all from various manufacturers. That makes system
integration a challenge and leaves customers responsible for resolving subsequent
job-site problems at install, commissioning, or maintenance.
Cummins Power Generation changes all that. PowerCommand Digital Paralleling
Systems are designed, prototype tested, manufactured, and serviced by one manu-
facturer, who takes responsibili ty for the entire on-site power system – not just one
piece of it.
That’s the Power Of One – one system, with components created to work together,
designed, buil t, pre-integrated,and serviced by one company. The result is reliabil ity,
optimum system performance, and minimum system cost – all backed by the largest
power generation system support organization in the world.
THE SYSTEM WITH NO EQUAL
Today,having a reliable, flexible and easy-to-operate on-site power generation
system is more important than ever before. Reliable – because the costs of power
outages and the consequences of disruptions to your business have never been
greater. Flexible – because your power needs, supply circumstances and utility costs
are dynamic.Easy-to-operate – because the touchscreen controls means information
is presented in an easy to understand format.
Whether your on-site power system is relied on for prime power, emergency back-
up, or for taking advantage of power sharing opportunities with your local util ity,the key to getting all these benefits and more is the advanced PowerCommand
Digital Paralleling System from Cummins Power Generation.
No other system offers all the benefits you get with PowerCommand Digital
Paralleling.From true digital control of startup, synchronization, and bumpless
power transitions – to sophisticated diagnostics, remote monitoring,and network-
ability – PowerCommand Digital Paralleling Systems are without equal.
PowerCommand ®
McMinnville Electric Systems in
Tennessee and Cirent Semiconductor
in Florida, use PowerCommand Digital
Paralleling Systems for peaking and
emergency back-up power, while
paralleling with the local utility.
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DIGITAL PARALLELING – A HIGHER STANDARD
In less than 15 seconds, PowerCommand Digital Paralleling Systems can parallel
and synchronize all your diesel and multiple gas-engine generator sets with the
utili ty. And it’s the same fast, consistent performance each and every time.
Only PowerCommand has been designed from the ground up as a true distributed
logic concept: paralleling controls mounted on the gensets, low or medium voltage
power section, and the Digital Master Control for supervisory functions.
Combine these advantages with a smaller footprint, lower system costs, and
easy-to-use intuitive interfaces that share the same data throughout the system,
and you’ve got state-of- the-art performance that is unsurpassed.
APPLICATIONS
PowerCommand Medium Voltage Switchgear is already in service in hundreds of
applications worldwide – including electr ic generation and distribution systems,
industrial plants, commercial buildings, hospitals,wastewater treatment plants,transportation systems, and pipeline stations. This class of switchgear protects
transformers,motors, generators, capacitors, distribution lines, and feeder circuits.
PowerCommand Medium Voltage Switchgear can also be specified to provide critical
main service entrance protection and controls in these applications.
MODEL 150
ISOLATED BUS APPLICATIONS
The Model 150 Master Control provides
all the functionality of traditional controls
with a simpler design that is easier to
use.
MODEL 200
ISOLATED BUS APPLICATIONS
The Model 200 has expanded graphics
capabilities, optional networking, data
logging, and dialout alarms and event
reporting for isolated bus applications.
MODEL 300
INFINITE BUS APPLICATIONS
Offers all the features of a Model 200,
plus the flexibility to parallel with single
to multiple utility sources.
for true power system reliability,flexibility, and ease-of-use.
Power Command System Legend:
Network / SCADA wires
Control wires
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Digital Paralleling
A LEAP FROM TRADITION
Paralleling equipment from many manufacturers, looks, works and uses many of the
same components as it did 25 years ago.But PowerCommand brings your power
systems into the 21st Century. Its power, simplicity,and ease of use are obvious
from even a quick inspection of the hardware.
Rather than hundreds of components wired in custom-manufactured switchgear
lineups, our digital paralleling equipment has revolutionized the way paralleling is
designed and manufactured.All Cummins Power Generation Digital Master
Controls are designed and manufactured around standardized control blocks for
increased reliability. As a result, PowerCommand systems deliver better performance
with increased functionality. And they use fewer components, taking up to 40% less
space, and are easier to service than tradit ional systems.
The PowerCommand digital paralleling control is serviced with a PC-based tool,
InPower™, that allows diagnosis,data monitoring,and adjustment of all control
functions – even governing, synchronizing, and voltage regulation. Since adjust-
ments are possible via modem, factory-based technicians can directly connect and
evaluate problems.
DIGITAL MASTER CONTROL – STANDARD DESIGN
The standardized design uti lizes distributed logic to form a series of basic modular
units,control packages, and instrumentation. For most switchgear ratings, circuit
configurations and functions, one basic size unit is used. This design provides
application flexibil ity, reliabili ty, efficiency, and economy by minimizing
engineering time to plan and lay out the switchgear.
With PowerCommand Digital Master Controls the genset performs all paralleling
functions, the digital master control automates load add/shed, data logging, and
operator interface and the switchgear provides basic circuit protection, and
electr ical switching functions. Components are neutralized, increasing reliabil it y.
So single component failure cannot bring the entire system down.
Controls for most paralleling equipment
are a maze of meters, switches and
cryptically labeled lamps that many
operators never figure out.
PowerCommand Digital Master Control
features an easy-to-use touchscreen
with more operational and diagnostic
information for operators.
TODAY’S USER-FRIENDLYTOUCHSCREEN CONTROLS
TRADITIONAL OPERATORCONTROL PANEL
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RELIABLE
Fewer parts mean fewer failures, and when compared to traditional paralleling control systems, the
Digital Master Control represents a 20-fold decrease in the number of components and wiring.System
reliabili ty is based on a standard design platform. Reliabili ty through repeatabil ity – that is the simple
premise behind the Cummins Power Generation Digital Master Control.
EASY TO USE
The Digital Master Control uses an interactive touchscreen, housed in a compact enclosure,not a large
complex looking gear-mounted control. Instead of flashing lamps,multiple switches and swinging needles,
you’ll see simple graphical displays and instructions.Messages are prioritized and everything is in one
location. Models 200 & 300 incorporate the system drawing and operation manual into the touchscreen.
All this makes it easier to respond to emergency conditions and maximize up-time.
FLEXIBLE
Powered by a full-featured industrial PC, the color touchscreen on Models 200 & 300 makes it easy to
program and update with a commercially available Windows®-based software platform. The PC
platform makes it easy to interface to existing media, like Ethernet, so you can transmit information
without creating an all new infrastructure. In fact, any place you can put a computer, you can locate a
redundant operator interface to monitor the power system.
A new standard of control.
ONELINE DIAGRAM
s Permits operator to understand the
entire power system at a glance.
s Graphic and audible indication of
alarms, trips, warnings, and shut
downs provide alerts to changing
system dynamics.
s Flashing task bar indicates active
alarms.
s Online Help available to all operators.
s Menu button allows for easy system
navigation.
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GENERATOR DATA DISPLAY
sGraphically display 21 generator
parameters in Digital or Analog format.
sBar graphs visually highlight normal,
warning, and shutdown status.
sChart function allows for easy
graphing and data logging of all key
system parameters.
sGraphical representation of system
characteristics:
– Single lines
– 11 AC metering values
– 10 Critical engine status parameters
– Number of systems starts
– Engine hours
– Event logging
– Time/date stamp
Digital Generator Data Display
Analog Generator Data Display
PowerCommandDigital Master Control
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s PowerCommand Master Control
The PowerCommand MasterControl is a state-of-the-
art, microprocessor-based paralleling system used
with PowerCommand paralleling generators sets and
switchgear in medium voltage applications.
s Redefining reliability
Distributed logic design enables each individual
system component to remain fully functional even if
the Digital Master Controller fails. Improves system
reliability and reduces maintenance costs.
s Construction
Rugged 12-gauge sheet metal with rust-inhibiting
finishes.Control components are isolated or shielded
from live components.
s Touchscreen
High-resolution color touchscreen allows quick
access to system operation and information,
including one-line diagram.
s AC Output Metering
RMS AC metering transducers provides input via a
serial link to the system PLC so AC metering data
can be displayed on the touchscreen.
s Easy To Service
PowerCommand’s digital controls interface directly with
the generator set and run continuously.They provideself-diagnostics, event reporting, and detect failures
even when the system is not in use.
s Modularized Design
The simplified layout and easy wiring allows for
easy service and expansion. All modules are
bench-wired and tested. Standard interconnects
and parts increases reliability.
built for the real world.
s Padlockable
access handles
s 15" Color PC-based
touchscreen
s Angled panel for
easier viewing
s Genset interface
s System PLC
with optional sync
• Hot standby
• PLC Tap for quick
network connection
s Transducers to meter
import/export levels
s “Best” battery supply
to PC and PLC
s Load add/shed plates module
s Generator/utility transfer
pair module
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s Voltage Transformers. Front
accessible, drawer-mounted voltage
transformers can be completely with-
drawn on extension rails. For operator
safety, the voltage transformers are
disconnected and grounded when
moved to the withdrawn position.
s Control Power Transformers.
Control power transformers rated up
to 15 kVA are drawer mounted and
can be completely withdrawn from
the front of the switchgear for ease
of maintenance. A secondary circuit
breaker mechanical interlock is pro-
vided and must be opened before
the transformer can be withdrawn
for access to primary fuses.
s Horizontal Drawout Circuit
Breaker. VR vacuum circuit breakers
feature a horizontal drawout design.
Test/disconnected and test/connect-
ed positions are provided.
s Hinged Front Door. Relays and
metering instrumentation are mounted
on the doors in standardized arrange-
ment to satisfy customer requirements.
Each breaker compartment door pro-
vides a racking access port to allow
moving the circuit breaker to or fromthe connected position with the door
closed. (Option for single full-height
door with one-high configuration.)
PowerCommand VacuumMetal-Clad Switchgear
sMechanical interlocks
s Disconnect type voltage transformers –
CPT and VT
sGrounded breaker truck in and between
test/disconnected and connected positions
s Low voltage instrument/control compart-
ment isolated from primary voltage areas
RATINGS:
s 4.76-15 kV (to 13.8 kV nominal)
s 1200-3000 Amperes
s 250-1000 MVA Interrupting capacity
s 60 and 95 kV BIL
s Indoor and outdoor enclosures
STANDARD FEATURES:
Metal-Clad Switchgear as defined by
ANSI C37.20.2 includes:
s UL-Listed
s Fully compartmented construction
sGrounded metal barriers enclose all
live parts
sAutomatic shutters
s Insulated bus
PowerCommand Sw
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s Frame and Housing. Precision-formed steel frames and inner panels,
finished with a superior TGIC poly-
ester powder coating process, provide
a strong rust-resistant structure with
rigid alignment of components.
sAutomatic Shutters. When thebreaker is withdrawn from the con-
nected position, the racking mecha-
nism linkage positively rotates the
grounded metal shutters into a
position that covers the energized
components.
s Main Bus Barriers. Main bus barri-
ers between bays are track-resistant,
flame retardant glass polyester.
Optional porcelain inserts are avail-
able with the glass polyester barriers.
s Main Bus and Insulation. Main
bus and runbacks are insulated with
a track-resistant, flame retardant
epoxy coating produced by the
fluidized bed process. Bus support
standoff insulators are glass poly-
ester rated at 5 kV and porcelain
rated at 15 kV. Bus joints are insu-
lated by vinyl boots. Access covers
and provided for main bus inspec-
tion from front and rear.
s Compartment Barriers. Grounded
metal barriers separate the main
compartments – breakers, main bus,cable, instrument/relay (low voltage
area), and auxiliary (VT and/or CPT).
s Cable Space. Top or bottom power
cable entry space is provided.The
quantity of cable termination devices
and space for surge arresters vary
with the ratings of breakers selected
for each vertical section.
Side view with side cover
sheet removed
s Racking System. A high quality gear-driven racking
mechanism is center-mounted on the cell floor, providing
balanced movement of the breaker between cell positions.
The racking system is coordinated with safety interlocks
to prevent movement of the breaker unless main con-
tacts are in the open position.
chgear Components
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More power to you
VR-05025-12 250 4.16 1200 4.76 1.24 3.85 19 60 29,000 33,200 36,000 1.2 36,000 58,000 3
VR-05025-20 250 4.16 2000 4.76 1.24 3.85 19 60 29,000 33,200 36,000 1.2 36,000 58,000 3
VR-05025-30* 250 4.16 3000 4.76 1.24 3.85 19 60 29,000 33,200 36,000 1.2 36,000 58,000 3
VR-05035-12 350 4.16 1200 4.76 1.19 4.0 19 60 41,000 46,900 49,000 1.2 49,000 78,000 3
VR-05035-20 350 4.16 2000 4.76 1.19 4.0 19 60 41,000 46,900 49,000 1.2 49,000 78,000 3
VR-05035-30* 350 4.16 3000 4.76 1.19 4.0 19 60 41,000 46,900 49,000 1.2 49,000 78,000 3
VR-08050-12 500 7.20 1200 8.25 1.25 6.6 36 95 33,000 37,800 41,000 1.2 41,000 66,000 3
VR-08050-20 500 7.20 2000 8.25 1.25 6.6 36 95 33,000 37,800 41,000 1.2 41,000 66,000 3
VR-08050-30* 500 7.20 3000 8.25 1.25 6.6 36 95 33,000 37,800 41,000 1.2 41,000 66,000 3
VR-15050-12 500 13.8 1200 15.0 1.30 11.5 36 95 18,000 19,500 23,000 1.2 23,000 37,000 3
VR-15050-20 500 13.8 2000 15.0 1.30 11.5 36 95 18,000 19,500 23,000 1.2 23,000 37,000 3
VR-15050-30* 500 13.8 3000 15.0 1.30 11.5 36 95 18,000 19,500 23,000 1.2 23,000 37,000 3
VR-15075-12 750 13.8 1200 15.0 1.30 11.5 36 95 28,000 30,400 36,000 1.2 36,000 58,000 3
VR-15075-20 750 13.8 2000 15.0 1.30 11.5 36 95 28,000 30,400 36,000 1.2 36,000 58,000 3
VR-15075-30* 750 13.8 3000 15.0 1.30 11.5 36 95 28,000 30,400 36,000 1.2 36,000 58,000 3VR-15100-12 1000 13.8 1200 15.0 1.30 11.5 36 95 37,000 40,200 48,000 1.2 48,000 77,000 3
VR-15100-20 1000 13.8 2000 15.0 1.30 11.5 36 95 37,000 40,200 48,000 1.2 48,000 77,000 3
VR-15100-30* 1000 13.8 3000 15.0 1.30 11.5 36 95 37,000 40,200 48,000 1.2 48,000 77,000 3
Type of Breaker
Asym-
metrical
Rating
Factor3
Short
Time
Rating
3 Sec.
Amps.-
rms
Close &
Latch
Rating
Amps.-
rms3
Inter-
rupting
Time
Cycles
Nominal Rating
Three Voltage
Phase kV-
MVA rms
Rated
Cont.
Current
60 Hertz
Amps.-
rms
Rated Voltage
Max Min
Voltage Range Voltage
kV- Factor kV-
rms K rms
Insulation Level
Rated Wi thstand
Low Impulse
Freq. 1.2x50µS
kV- kV-
rms Crest2
Interrupting Ratings1
Amps. - Symmetrical
Max. Nom. Min.
kV kV kV
Amps.- Amps.- Amps.-
rms2 rms rms
CIRCUIT BREAKER RATINGS DATA CHART
Breaker Identification
VR 05 025 12
* Availability to be announced.
x For interrupting current ratings at operating voltages
other than those listed, used the following formula:
The calculated current should not exceed the maximum
interrupting current rating, Imax:
Imax =K xIVmax
y These values apply with circuit breaker in or out of enclosure.
➂ Rated Short Circuit Current (at rated Max kV).
➃ Rating factor is based on breaker speed from initiation of trip sig-
nal to contact parting, allowing for 1/2 cycle relay time.
To obtain the asymmetrical current interrupting capacity of the
breaker, multiply the symmetrical current by 1.2.
➄ Close and Latch Rating (Momentary) Amps rms =(1.6K)(Rated Short Circuit Current). Additional Close and Latch Rating in
kA Crest =(2.7K) (Rated Short Circuit Current).
Iop =
Vmax
Vopx
IVmax
Continuous Current Rating
MVA Rating
Voltage Rating
Breaker Type
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B ll ti F 1442
The Power of One™
Visit at www.cumminspowergeneration.com1400 73rd Avenue N.E., Minneapolis, MN 55432
Phone: 763-574-5000, Fax: 763-574-5298
Cummins Power Generation is a registered trademark of Cummins Inc. Power Command and The Power of One are trademarks of Cummins Power
G eneration Corpora tion. C ummins is a registered trad emark of Cummins Inc. All other trademarks are owned by their respective companies.Backfeed to a ut ility system can cause electrocution and/or property damage. D o not connect to any building’s electrical system except through anapproved device or after building main switch is opened.
S ifi i bj h i h i P i d i h U S A 4/02 © 2 002 C i P G i
THE RIGHT POWER FROM THE RIGHT SUPPLIER
Cummins Power Generation is a world leader in the design and
manufacture of power generation equipment, including
PowerCommand Digital Paralleling Systems for switching, control,
and protective applications.We also provide single-source warranty,
planned maintenance, and round-the-clock emergency service 24
hours a day, seven days a week, including back-up rental power
through our network of over 170 distributors in 110 countr ies
around the world.
For more informati on about how PowerCommand Digi tal
Paral leli ng Systems can help meet your power demands, call your
local Cummi ns Power Generat ion Distr ibutor at 1-800-888-6626.
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