ProCurve Lightning Arrester (J8996A) Guide 2010

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DESCRIPTION

The ProCurve J8996A gas-discharge lightning arrester provides high-level

protection for transmitters and receivers at RF-communication sites. In the

event of a local strike, the unit’s gas discharge tube ionizes instantaneously

to limit sudden voltage surges across the coaxial line. When connected to

a satisfactory ground, the J8996A can safely shunt up to 5000 Amperes of

impulse current away from sensitive station equipment. Lightning arresters

are not included with the antenna and must be purchased separately.

HP ProCurve Lightning Arrester (J8996A) Guide

MAINTENANCE

The life expectancy of the LAC6 lightning arrester depends upon the

frequency and severity of electrostatic activity at the site. Low-level

conduction resulting from nearby storm activity has little impact on the

unit’s life, but powerful surges induced by on-site strikes will eventually

result in degraded performance or failure. Signs of degraded perfor-

mance may include reduced receiver sensitivity, above-normal VSWR

readings, and RF heating of the arrester body during transmit mode.

Should the gas discharge tube in the LAC6 fail totally, it becomes a

permanently conductive protective shunt to ground. Periodic VSWR

checks provide a good indicator of deteriorating performance, and re-

placement may be indicated following especially severe weather events

where multiple on-site strikes were known to occur.

Item Specication

Insertion loss 0.4 dB max.

Impulse Breakdown voltage:

(1 KV/microsec max.)

700 V Nom

VSWR 1.4:1 max.

Impulse Discharge Current 5,000 A

Insulation Resistance 50 Meg Ohm

Input RF Power, 100 MHz / 6000 MHz 250 W / 10 W

Dimensions, in. 2.4 x 1.2 x 0.9

Enclosure Nickel-plated Brass

SPECIFICATIONS

The information contained herein is subject to change without notice.

Printed in

Part Number: 5998-0350

WARRANTY AND SUPPORT INFORMATION

See the warranty and support information included with this product.

For the latest information, go to www.hp.com/go/procurve/support.

Figure 1

*5998-0350*

J8996A

Ground Lug

SAFETY

WARNING: PROFESSIONAL INSTALLATION REQUIRED:

Prior to installing or using this device, consult with a professional

installer trained in RF installation and knowledgeable in local regula-

tions including building and wiring codes, safety, power,indoor/outdoor

restrictions, and license requirements for the intended country. It is the

responsibility of the end user to ensure that installation and use comply

with local safety and radio regulations.

Warning: Surge protection and grounding:

When connecting

an outdoor antenna make sure that proper lightning surge protection

and grounding precautions are taken in accordance with local electrical

codes. Failure to do so may result in personal injury, re, equipment

damage, or a voided warranty. The HP ProCurve hardware warranty

does not cover damage caused by static discharge or lightning strike.

Gas discharge tube

Summary of content (2 pages)

PAGE 1
HP ProCurve Lightning Arrester (J8996A) Guide description The ProCurve J8996A gas-discharge lightning arrester provides high-level protection for transmitters and receivers at RF-communication sites. In the event of a local strike, the unit’s gas discharge tube ionizes instantaneously to limit sudden voltage surges across the coaxial line. When connected to a satisfactory ground, the J8996A can safely shunt up to 5000 Amperes of impulse current away from sensitive station equipment.
PAGE 2
INSTALLATION Figure 2 For best results, install in close proximity to a low-resistance ground at a point where the coaxial cable enters the building or attaches to an AP. To connect your arrester to ground, use a very short and direct run of #8 solid copper wire, or equivalent. For exterior installations, weatherproof the coax connectors with a suitable mastic or rubberized tape to prevent water incursion. See Figure 2.