AC Surge Protection Devices

AC S u r g e
Protection
D ev i c e s
FLEXIBLE , INNOVATIVE
SOLUTIONS FOR INFOCOM
SYSTEM PROTECTION
pioneers
in surge
protection
Joslyn is recognized worldwide as the
pioneer in the design, development and
manufacture of electrical and electronic
protection products. Whether the
application is for AC or DC power
systems, Joslyn sets the standard for the
surge suppression industry.
Today, Joslyn products are protecting more
than one billion AC and DC circuits worldwide.
The communications industry relies on
Joslyn’s advanced surge protection
technology to guard mission-critical
operations in more than 120 countries.
Joslyn surge protection devices protect
the facility’s power distribution system
and sensitive electronics and electrical
loads. Whether installed at wireless sites,
remote switching centers, data centers,
customer service centers or central
offices, Joslyn AC surge protectors help
the communications industry achieve
maximum uptime.
i n n ov a t o r s
of infocom
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Comprehensive product line
More than 500 standard product configurations are available
through Joslyn’s extensive AC surge protector line. Ranging
from 400kA per phase devices for central office or hut/shelter
applications to compact, 20kA per phase units for lower
exposure or lower risk applications, Joslyn equipment can
readily meet all your surge protection applications.
Flexible solutions… by design
Meeting the unique needs of OEM applications is our specialty.
Our Applications Engineering team specializes in providing
customized, cost-effective surge protection solutions for your
specific requirements. Our extensive familiarity with AC
distribution systems worldwide makes Joslyn the infocom
industry’s leading supplier of both standard and customized
AC surge protection solutions. When a custom solution is
required for a new or enhanced system, our rapid engineering
response and world-class, JIT production system will help
you meet your deployment schedule — anywhere in
the world.
Put Joslyn technical expertise to work for you.
Joslyn holds many U.S. and European patents. Our engineers
participate in IEEE, PEG, NEMA, IEC and other electrical
protection standards committees to ensure product design
stays attuned to developments within the sciences of electrical
protection. Moreover, our expert staff will help you identify
and correct application or installation variables that contribute
to high-voltage “let-through” and subsequent equipment
damage. You can look to us for help in choosing the protection
equipment that is right for your applications and requirements.
To assist you in total power systems engineering, Joslyn
maintains professional alliances with major power cabinet
and electronic equipment manufacturers, as well as electrical
and grounding engineering consulting firms. We will coordinate integration of equipment offerings and engineering
services to ensure optimal solutions consistent with sound
engineering practices.
The new ”-CNR“ series
features a feed-through
(Kelvin) parallel connection. This highly efficient
configuration minimizes
inductance and lowers
the actual clamping
voltage by virtually
eliminating the “lead
length” of the surge
protection device.
maximum
per formance
and reliability
Joslyn AC Surge Protectors
reducing (clamping) the high transient voltage to
• Provide state-of-the-art, field-tested, time-proven
harmless levels. Upon the end of the transient
MOV and SAD technologies to protect your
event, the device automatically returns to its normal
valuable equipment and keep it on-line to protect
operating condition without service interruption.
your customer revenue streams.
• Respond instantaneously and reliably to repeated
high-current lightning and other transient
voltage surges.
• Accurately indicate operational protection status
Approvals and standards applicable
to Joslyn AC surge protectors:
• ANSI/IEEE C62.11
• ANSI/IEEE C62
• ANSI/IEEE C62.41
via jumbo, long-life LEDs.
• Bellcore TR-NWT-001011
• Offer optional remote-monitoring that alerts
the Operations Management Center and/or
• CE per Directive 73/23/EEC
off-site technicians about protection status and
• CSA Certification
power disturbances.
• cUL
• Feature a modular design, making them highly
flexible and customizable for your specific
performance and installation requirements.
• IEEE C62.1
• RUS acceptance
• UL 1449, 2nd Edition
• Ensure reliable performance supported by long
warranties.
Method of operation
When a transient surge exceeds the normal system
voltage, the protection device responds within
nanoseconds and changes state from a highimpedance open circuit to a low-impedance shunt
(short circuit). Connected in parallel with the
facility’s loads, the device diverts damaging current
away from sensitive loads while simultaneously
3
J OSLYN AC P ROTECTORS
pigtail
Surge protectors for subpanels and cabinets
• Two sizes and a convenient pigtail design make installation
Pigtail protectors,
such as 1457-49-R,
are available with
Form C contact relays
to permit remote
monitoring.
flexible and easy.
• Devices provide 40kA per phase protection in a compact enclosure.
• Thermal disconnects and fusing for each MOV plus a sand-filled
enclosure permit benign end-of-life mode during sustained line
overvoltage conditions, thus eliminating smoke and fire damage to
adjacent equipment.
open-frame
Custom, Open-Frame
Protectors offer
a choice of bolt-on
or plug-in design.
Custom-tailored solutions for infocom OEMs
Joslyn leads the industry in the design and
manufacture of custom, open-frame AC surge
protectors for infocom applications. These spaceefficient protectors reduce voltage let-through
and allow easy maintenance and system integration.
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Shown:
Models 1265-68-MNR
and 1265-68-CNR
FOR ALL I NFOCOM A PPLICATIONS
• Plastic, hermetically sealed Noryl™ housing ensures weatherproof
protection for outdoor and indoor installations.
• Color-coded wiring conforms to U.S. and international standards.
When remote monitoring is not
required, Joslyn pigtail protectors,
such as this 1265-21, are available
without relays.
Choose from MOV, SAD, and MOV/SAD hybrid technologies
in variable primary and secondary configurations.
• Bolt-on and plug-in modules
• Virtually unlimited design configurations
• Wide range of sizes
• UL-Recognized
• Flexible monitoring options
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C HARACTERISTICS COMMON
TO ALL J OSLYN MODELS
a
VOLTS
FIGURE
1A
1B
120
230
a
b
FIGURE VOLTS VOLTS
2A
2B
FIGURE
3A
3B
3C
3D
120
240
240
480
Maximum Surge Current (refer to kA
per Phase column in Selection Guide).
This value represents the maximum
current amplitude (on an 8/20 µs waveform*) the protector can conduct
without causing physical damage and
while still retaining protection capacity.
It is the sum of the L-N rating plus
the L-G rating.
*Refer to IEEE 62.41 for definition
a
b
VOLTS VOLTS
208
220
400
480
FIGURE
4A
4B
120
127
230
277
5A
a
b
c
FIGURE VOLTS VOLTS VOLTS
6A
240
a
VOLTS
240
480
a
FIGURE VOLTS
6
• Operating Temperature Range:
-40°C to at least +65°C
• Power Frequency: All units operate
on 50Hz and 60Hz systems.
• Surge Protector Voltage Ratings: All
models are designed to operate at the
referenced nominal system voltage.
240
FIGURE
7A
120
208
a
VOLTS
480
Figures show the surge
protection device connections
to the electrical service
and detail the transformer
secondary configuration.
Refer to the Figure No. column
in the Selection Guide for
assistance in specifying the
appropriate device.
Minimum Life Expectancy of any surge
protection device (SPD) is the result
of two primary factors: the frequency
and intensity of surge-causing events
(e.g., direct or induced lightning,
induction, PFC capacitor, load
switching, etc.). Therefore, it is
imperative to properly select an SPD
appropriate for the following factors:
1. the facility’s exposure to surges,
rather than to the size of the load
or service;
2. the criticality or value of the
equipment being protected; and
3. the location of the SPD within the
facility’s power distribution system.
Load Ratings (or service amperage)
of the secondary distribution system
do not represent objective SPD selection
criterion since the protection devices are
installed in parallel with the loads. Surge
currents entering or generated within
a facility are completely independent
of the substation kVA capacity or service
amperage. Again, exposure (the likelihood and magnitude of surge events)
and SPD location (service entrance or
sub-panel) are critical to SPD selection.
Our Applications Engineering team can
help you with this selection process.
Protection modes
In the U.S.,Canada and China in particular, the neutral conductor is grounded at
both the electrical substation and the
service entry point, typically where the
main service-disconnect is installed. In
such circumstances, the main facility
SPD, installed at the service entrance,
needs only L-N and N-G protection
modes (for ground-referenced power
systems, which are the most common).
The N-G mode is for safety in the event
of either a poor connection with the NG bond or within the grounding system
itself.
At sub-panels and other locations
within a facility that are farther than
10 electrical feet from the service
entrance, the addition of an L-G
protection mode provides an optimal
protection scheme by providing an
additional, direct surge-path to ground.
Selector Guide
7
r e s p o n s i ve
customer
service
To place orders or inquire about product
pricing, availability or order status,
please contact Joslyn Customer Service.
Our professional staff of representatives
is available to assist you from 7:00 a.m.
to 5:00 p.m. (Pacific), Monday
through Friday.
P. O. Box 817, Goleta, CA 93116
6868 Cortona Drive
Santa Barbara Research Park
Goleta, CA 93117
Customer Service
Tel: 800-752-8068
805-968-3551
Fax: 877-822-8406
805-968-0922
805-968-2335
Applications Engineering
Tel: 800-752-8068
805-968-3551
Fax: 805-968-8491
Email: joslyn@joslynsurge.com
Learn more about Joslyn surge protectors at
http://www.joslynsurge.com/ac_arresters.html
© 1999 Current Technology, Inc. All rights reserved. Printed in U.S.A.
Joslyn products are manufactured in the U.S.A. Joslyn is a registered
trademark of Current Technology, Inc. and the Joslyn logotype is a
trademark of Current Technology, Inc.
TDSACSERIES(C) FIG-IC/699/10M J-1969