Multi-Link devices have been an integral part of substation communications for over 15 years. Thousands of our devices are used by over 100 electric and gas utility companies to provide reliable communications with meters, power quality monitors, and relays. The Polnet® ACP is also being installed for “out-of-band” network support for “in-band” communication networks.

1.
Managing Power Generation and
Transmission Equipment
APPLICATION NOTE
Executive Overview APPLICATIONS
Multi‐Link devices have been an integral part of substation o Energy Management
communications for over 15 years. Thousands of our devices are used by Controls
over 100 electric and gas utility companies to provide reliable o Modem Polling
communications with meters, power quality monitors, and relays. The
o Automated Meter Reading
Polnet® ACP is also being installed for “out‐of‐band” network support for
o Service Port Access
“in‐band” communication networks. Multi‐Link, Inc. has provided cost‐
saving management solutions for telecom and data operations for o Remote Equipment
Maintenance
22years.
o Out-of-Band Network
Access
The Problem
With greater demand for connectivity to existing and new data reporting
devices, more access points are required, which means more strain on
budgets. With this unprecedented growth comes the ever increasing
need to remotely access the control interfaces of the equipment.
Engineers and technicians must be able to access their interfaces from
remote operations centers or while on the road in order to assure
maximum service availability.
Cost of Network Infrastructure:
With the number of management interfaces growing, telecommunication
costs to access them are also growing. Some communication technologies
are too expensive and some are unreliable. Many utility companies are
opting for the POTS line to provide a low cost and reliable means of data
acquisition. However, by using the Polnet ACP, one POTS line can provide
access to 9 devices making the ACP9 an average cost of $60 per
connection.
Limited Resources:
With the fast installation pace of new projects, availability of support staff
is at a premium. Managing remote applications frequently puts
maintenance personnel out of contact for hours, or even days at a time,
frequently at expensive overtime labor rates.
225 Industry Parkway, Nicholasville, KY 40356 ‐ 800.535.4651 ‐ www.multi‐link.net

2. Polnet® A
ACP
The So
olution Automatic Call P
Processor
Multi‐link
k offers a suite
e of Americann‐made produ ucts that allow you to
reduce orr eliminate telephone lines s as well as re
emotely reboo ot
equipmen nt. The savinggs in time and
d more efficieent utilization
n of limited
BENEFITS
resourcess optimize sup pport operations. oS
Saves mone by
ey
reducing the number
r e
of
o phone linnes
required for
r r
substation o
s operations
Exampl Utility Substatio
le: on
o Reduce site visits
Remote connectivity to o control ports provides ac ccess to critic
cal oC
Centralized control
operation nal informatioon. In applica
ations normally using in‐ne etwork from remote location
f e
connectiv vity, secure ac
ccess using ouut‐of‐band techniques assures o ROI within 3 to 6
substation n can become e completely isolated in thhe event of ne etwork month
m
failure.
Installing a
Polnet ACP, a a
FE
EATURES
S
secure line‐
sharing o Extremely flexible
device, touchtone
t
wherever programmin
p ng,
multiple REMOTE
phone lines programmin
p ng
are required optional
o
can reduce oU
User defined Security
d
expenses by Access Code to
A es
seven digits
s s
thousands of f
dollars. o Broad comp patibility
with telepho
w ony
Many times each locat tion is able to
o reduce the r
requirement f for four or
equipment a
e and Telco
more pho one lines, savi
ing $200‐$350 0 per month, or more.
services
s
Multi‐Link k’s publicly ow
wned, private
ely owned, annd cooperativ ve electric otection
o Barge-in pro
utilities cu
ustomers are saving thous sands of dolla
ars utilizing th
his equipment t o Dual surge protection
today, wit th over 10,00 00 ACPs now i
installed. One such compa any has over o Emergency Barge-IN
1000 ACPs, saving over $1,000,000 per year in re educed teleco om charges. for
f Priority O
Outbound
Calls
C
o No loss of ddata
throughput speed or
t
Examp 2: Win Energy
ple nd integrity...in
i nvisible to
call
c transact tion
Maintena ance and ope erations organnizations are responsible f for wind
oT
Toll free tec support
ch
farms inst talled across ever‐growing his is putting a strain on
g territory. Th
staff tryin
ng to keep up with equipm ment issues. Inn many cases s telemetry
equipmen nt needs to be e powered up p on a regularr basis, after w
which it is
again turnned off. For s
staff trying to keep up with h field problems as well
regular op s becoming a challenge to keep. For ma
perations it is anagement
225
5 Industry Parkw
way, Nicholasville, KY 40356 ‐ 80 ww.multi‐link.ne
00.535.4651 ‐ ww et

3. this translates into extra costs for overtime pay, truck maintence, fuel,
etc.
The Power Stone®
Remote AC Power Controller
The Power
Stone® helps
contain
those costs. BENEFITS
The Power
Stone is a o Saves Money - The
phone call‐ Power Stone pays for
activated AC itself with one saved
power service visit
controller o Reduces Downtime -
used to One phone call can
reboot and correct problem
equipment in minutes
power
up/down remote equipment. Connect The Power Stone to equipment o Protects Equipment -
Leave equipment “off”
and a phone line to gain complete power control anywhere you can place
until needed. Reduces
a phone call. Because The Power Stone is activated with a telephone call,
power consumption and
power to the attached equipment can be controlled from the operations hacker exposure
center or even via cell phone by traveling employees. The Power Stone
o Application Flexibility –
makes a perfect complement to the Polnet ACP, providing complete Automatic and Manual
control of remote equipment. operations for versatility
in a variety of
Savings per Year applications
$4,000,000
Dollars per Year
$3,000,000
$2,000,000
FEATURES
$1,000,000
$0 o Fully Programmable
1 1600 3200 5000 o Automatic mode
Number of Phone Lines Eliminated
o Manual over-ride button
o 120 volt, 15 amp rating
o Programmable security
Summary access codes
In today’s economic environment successful power generation and o Non-volatile memory
distribution operations will require innovative solutions to keep pace with o Remote programming
and diagnostics
demand while maintaining high levels of service. Reducing
telecommunication 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/stick_calculator.
225 Industry Parkway, Nicholasville, KY 40356 ‐ 800.535.4651 ‐ www.multi‐link.net

4.
Some of the Public Utilities Using the Polnet® ACP
AMERICAN ELECTRIC POWER FIRST ENERGY/OHIO EDISON PUBLIC SERVICE ELECTRIC & GAS OF NJ
ARKANAS POWER AND LIGHT FIRST ENERGY/TOLEDO EDISON PUBLIC SERVICE OF OKLAHOMA
BALTIMORE GAS & ELECTRIC FLORIDA POWER CORP ROSEVILLE ELECTIC
BANGOR HYDRO-ELECTRIC FLORIDA POWER AND LIGHT SOUTH CAROLINA GAS & ELECTRIC
CENTRAL ILLINOIS PUBLIC SERVICE GEORGIA POWER TENNESSEE VALLEY AUTHORITY
COMPANY
CENTRAL MAINE POWER CO. GULF POWER COMPANY TRICO ELECTRIC
CENTRAL POWER ELECTRIC COOP IDAHO POWER TRI-STATE G&T
CINERGY INTERSTATE POWER UNITED POWER
CLAY ELECTRIC COOP LOUISIANA POWER US DEPARTMENT OF ENERGY
CONNEXUS ENERGY MATANUSKA ELECTRIC WEATLAND RURAL ELECTRIC
CONSUMER'S POWER MINNESOTA POWER WEST OHIO GAS
DAYTON POWER MONTANA POWER WEST TEXAS GAS
DELMARVA POWER NIPSCO WESTERN AREA POWER AUTHORITY
DUKE ENERGIES NORTHERN INDIANA PUBLIC WESTERN FARMERS ELECTRIC COOP
SERVICE
EAST KY POWER COOPERATIVE NORTHWESTERN PUBLIC SERVICE WHEATLAND RURAL ELECTRIC
ENTERGY CORP OKLAHOMA GAS & ELECTRIC WISCONSIN POWER & LIGHT
ENTERGY SERVICES PENN POWER WRIGHT-HENNIPEN ELECTRIC
FIRST ENERGY PENNSYLVANIA POWER & LIGHT
225 Industry Parkway, Nicholasville, KY 40356 ‐ 800.535.4651 ‐ www.multi‐link.net

5. 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 Voltage
Waveform: Pseudo-Sine
Power Consumption: 10 Watts
Ringing No Load: Approximately 105 Volts AC
Power Consumption at standby: 8 Watts 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
Physical: 6.3" W x 9.5" D x 1.4" H, 1 lb
Power Stone® Technical Specifications
Model Number PST59102 Switching Manual Key Pad 4 or 6 digit security
Power 120 VAC plug in (60 Hz) code 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‐
Interrupt Modes detect. Manual pick up with back
security code. Ringer Equivalence 1.1 B
Switching Auto Reboot (15 sec off, then on)
Toggle (on or off)
Power on call then off after
hang up + 2 min.
225 Industry Parkway, Nicholasville, KY 40356 ‐ 800.535.4651 ‐ www.multi‐link.net

6.
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
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
associated costs.
MULTI-LINK, Inc.
225 Industry Parkway
Nicholasville, KY 40356
www.multi-link.net
800.535.4651
225 Industry Parkway, Nicholasville, KY 40356 ‐ 800.535.4651 ‐ www.multi‐link.net