Wind powered electricity generation is one of the fastest growing sectors of the American economy. This rapid growth has presented a challenge to those organizations charged with operating and managing far-flung equipment. Multi-Link, Inc. has provided cost containment and remote site service solutions for hundreds of utilities and equipment service providers for over 22 years.

1.
Managing Wind Power Generation
and Transmission Equipment
APPLICATION NOTE
Executive Overview
Wind powered electricity generation is one of the fastest growing
sectors of the American economy. This rapid growth has presented a
challenge to those organizations charged with operating and managing APPLICATIONS
far‐flung equipment. Not only is it imperative to satisfy customer
o Energy Management
demand for faster service and improved asset availability, it is Controls
increasingly important to do so while reducing service related costs and
o Substation
enhancing profitability. Multi‐Link, Inc. has provided cost containment Communications
and remote site service solutions for hundreds of utilities and equipment
o Modem Polling
service providers for over 22 years.
o Automated Meter Reading
o Service Port Access
o Remote Equipment
Maintenance
The Problem
o Out-of-Band Network
Access
Wind turbines are being installed as fast as they can be manufactured.
With this unprecedented growth comes the need to remote access the o SCADA Interrogation
control interfaces of the equipment – power monitors and conditioners, o Telephony Firewall
relays, meters, and telemetry data. Engineers must be able to access the o Remote rebooting and
management interfaces of these devices from remote operations centers power control of network
or while on the road in order to assure maximum service availability. assets
Cost of Network Infrastructure:
With the number of management interfaces growing, telecommunication
costs to access them are also growing. In many cases a separate phone
line is installed for each device, with an attached monthly cost of about
$50 (based on national average). At sites with four phone lines, costs can
add up to $2,400 per year per site.
Limited Resources:
With the fast installation pace of new projects, availability of support staff
is at a premium. Managing remote site equipment frequently puts
maintenance personnel out of contact for hours, or even days at a time,
frequently at expensive overtime labor rates. In addition, cost per
service dispatch has risen 33% from 2006 through 2009.

2. The Solution
Polnet ACP
Multi‐link offers a suite of American made products that allow you to Automatic Call Processor
eliminate telephone lines as well as remotely reboot equipment. The
savings in time and more efficient utilization of limited resources optimize
support operations.
BENEFITS
Example 1
Maintenance and operations organizations are responsible for wind farms o Saves money by
constructed across a vast, ever‐growing territory. This is putting a strain eliminating phone lines
on staff trying to keep up with equipment issues many miles apart. In o Secures dial-up
many cases, modems from hackers
telemetry o Centralized control from
equipment remote location
needs to be o ROI within 3 to 6 month
powered up on
a regular basis,
after which it is
again turned
off. For staff Features
trying to keep
o Extremely flexible
up with field
touchtone
problems as
programming, remote
well as regular programming optional
operations, it is
o User defined Security
becoming a daily challenge to meet service level demands. For Access Codes to seven
management this translates into extra costs for overtime pay, service call digits
dispatches, fuel, etc. o Broad compatibility with
telephony equipment
The Power Stone helps contain those costs. The Power Stone is a phone and Telco services
call activated AC power controller used to reboot and power up/down o Barge-in protection
remote equipment. Connect The Power Stone to equipment and a phone
o Dual surge protection
line to gain complete power control anywhere you can place a phone call.
o Emergency Barge-In for
Because The Power Stone is activated with a telephone call, power to the
Priority Calls
attached equipment can be controlled from the operations center or even
via cell phone by staff who are traveling. The Power Stone makes a o No loss of data
throughput speed or
perfect complement to the Polnet ACP, providing complete control of
integrity...invisible to
remote equipment. call transaction
o Toll free tech support
Example 2
o Two Year Warranty
Remote connectivity to control ports provides access to critical
operational information. In applications normally using in‐network
connectivity, secured access using out‐of‐band techniques via the Public
Switched Telephone Network (PSTN) assures that no site can become
completely isolated in the event of network failure.

3. The Power Stone®
Remote AC Power Controller
Benefits
o Saves Money - The
Power Stone pays for
itself with one saved
service dispatch
Installing a Polnet® ACP (ACP), a secure line sharing device, wherever o Reduces Downtime -
multiple phone lines are required for out‐of‐band access can reduce One phone call can
expenses by thousands of dollars. Many times each location is able to correct problem
reduce the requirement for four or more phone lines, saving $200‐$350 equipment in minutes
per month, or more. o Protects Equipment -
Electric utilities are saving thousands of dollars utilizing this equipment Leave equipment “off”
today, with over 10,000 ACPs now installed. One such company has over until needed. Reduces
power consumption and
1,000 ACPs, saving over $1,000,000 per year in reduced telecom charges.
hacker exposure
o Application Flexibility –
Automatic and Manual
Savings per Year operations for versatility
in a variety of
applications
Dollars per Year
$4,000,000
$3,000,000
$2,000,000
$1,000,000
Features
$0
1 1600 3200 5000 o Fully Programmable
Number of Phone Lines Eliminated
o Automatic reboot mode
o Manual mode (secure)
o 120 volt, 15 amp rating
Summary o Programmable security
access codes
In today’s economic environment, successful power generation o Non-volatile memory
operations will require innovative solutions to keep pace with demand o Remote programming
while maintaining high levels of service. Reducing telecommunication and diagnostics
costs and making efficient use of resources are key elements stretching
budget dollars. Multi‐Link products have been used by electric companies
to accomplish these goals for over 15 years.
To find out how much money you can save, download the Multi‐Link cost
savings calculator at www.multi‐link.net/Phone‐Line‐Sharing‐Calculator.

4. Some of the Public Utilities Using the Polnet ACP and Power Stone
ARKANAS POWER AND LIGHT FIRST ENERGY/OHIO EDISON PUBLIC SERVICE ELECTRIC & GAS OF NJ
BALTIMORE GAS & ELECTRIC FIRST ENERGY/TOLEDO EDISON PUBLIC SERVICE OF OKLAHOMA
BANGOR HYDRO-ELECTRIC FLORIDA POWER CORP ROSEVILLE ELECTIC
CENTRAL ILLINOIS PUBLIC SERVICE
COMPANY FLORIDA POWER AND LIGHT SOUTH CAROLINA GAS & ELECTRIC
CENTRAL MAINE POWER CO. GEORGIA POWER TENNESSEE VALLEY AUTHORITY
CENTRAL POWER ELECTRIC COOP GULF POWER COMPANY TRICO ELECTRIC
CINERGY IDAHO POWER TRI-STATE G&T
CLAY ELECTRIC COOP INTERSTATE POWER UNITED POWER
CONNEXUS ENERGY LOUISIANA POWER US DEPARTMENT OF ENERGY
CONSUMER'S POWER MATANUSKA ELECTRIC WEATLAND RURAL ELECTRIC
DAYTON POWER MINNESOTA POWER WEST OHIO GAS
DELMARVA POWER MONTANA POWER WEST TEXAS GAS
DUKE ENERGIES NIPSCO WESTERN AREA POWER AUTHORITY
NORTHERN INDIANA PUBLIC
EAST KY POWER COOPERATIVE SERVICE WESTERN FARMERS ELECTRIC COOP
ENTERGY CORP NORTHWESTERN PUBLIC SERVICE WHEATLAND RURAL ELECTRIC
ENTERGY SERVICES OKLAHOMA GAS & ELECTRIC WISCONSIN POWER & LIGHT
FIRST ENERGY PENN POWER WRIGHT-HENNIPEN ELECTRIC
PENNSYLVANIA POWER & LIGHT
Polnet ACP Technical Specifications
Model Number ACP‐3; ACP‐5; ACP‐9
Device Interface
Input Power Requirements Battery: 45 Volts DC to all ports
At AC Transformer: 110‐125 Volts AC only, 50‐60 Hz Off‐Hook Detection: 8‐150 mA
At Power Jack on ACP: 12‐15 Volts AC Ring Generator Frequency: 33 Hz
Power Consumption: 10 Watts Waveform: Pseudo‐Sine
Power Consumption at standby: 8 Watts Ringing No Load: Approximately 105 Volts AC
Ringing 8K Ohm Imp. (REN1.0): Approx 76 Volts AC
Ringing 4K Ohm Imp. (REN2.0): Approx 59 Volts AC
CO Interface Ringing 2.7K Ohm Imp. (REN3.0): Approx 45 Volts AC
Ringer Equivalence Number: 1.1B
Input Ring Detection: 40‐150 Volts AC, 15‐68 Hz Warranty 2 year limited
Physical: 6.3" W x 9.5" D x 1.4" H, 1 lb

5.
Power Stone Technical Specifications
Model Number PST59102 Switching Manual Key Pad 4 or 6 digit security code
Power 120 VAC plug in (60 Hz) command (on/off)
Switching Contact 120/12 VAC 15A with reset Manual Override Push button (on/normal
breaker 1800W, 600W operation)
incandescent. Power and Relay Status LED; Remote audible read‐back
Interrupt Modes Automatic on ring detect. Ringer Equivalence 1.1 B
Manual pick up with security Physical 3.4" W x 1.8" D x 6" H, 1 lb
code. Warranty 1 year limited
Switching Auto Reboot (15 sec off, then on)
Toggle (on or off)
Power on call then off after
hang up + 2 min.
Multi-Link Inc.
Multi-Link Inc. makes affordable, cost cutting telecom
equipment for a wide variety of commercial, government, and
residential applications. With 22 years of experience, we have
earned a reputation as a leading manufacturer of money saving MULTI-LINK, Inc.
telecom solutions. Hundreds of companies, from SOHO to
Fortune 1000, domestic and international, have installed
thousands of our products to reduce monthly phone bills and
225 Industry Parkway
associated costs. Nicholasville, KY 40356
www.multi-link.net
T: 800.535.4651