Acom L-PROT 2000 User Manual

Lightning protector for 1.8-54 mhz, 2 kw antennas with coaxial cabling

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OUTSTANDING HF POWER PRODUCTS

ACOM L-PROT 2000

Lightning Protector

for 1.8-54 MHz,

2 kW antennas

with coaxial cabling

User's Manual

Installation, Operation

and Maintenance

February 2025

Table of Contents

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Summary of Contents for Acom L-PROT 2000

Page 1 ACOM L-PROT 2000 Lightning Protector for 1.8-54 MHz, 2 kW antennas with coaxial cabling User's Manual Installation, Operation and Maintenance OUTSTANDING HF POWER PRODUCTS OUTSTANDING HF POWER PRODUCTS February 2025...
Page 2 User's Manual | ACOM L-PROT 2000 | Lightning Protector This manual is for electronic distribution mainly. If you have it on paper and you no longer need it, please, recycle it! The latest versions of our User's Manuals are available at www.acom-bg.com...
Page 3: About Documentation
ACOM products and services. Further, this User's Manual is provided AS IS and ACOM shall not be liable for possible errors contained herein.
Page 4 Copying this document, giving it to others and the use or communication of the contents thereof without express authority, are forbidden. Offenders will be held liable for infringement of any intellectual property of ACOM Ltd. and all damages which may rise as a result.
Page 5: Table Of Contents
GND Connection ......................24 2.3.2. Cable Connection from the Antenna to the L-PROT 2000 ..........25 2.3.3. Antenna Cable Connection from the L-PROT 2000 to the Transceiver (or antenna tuner, or amplifier) ..........................25 MAINTENANCE ............................26 3.1. Periodic Maintenance ........................26 3.2.
Page 6 Figure 2-3 | L-PROT 2000 mounting dimensions .................... 21 Figure 2-4 | Front panel - Connections ......................23 Figure 2-5 | Connection diagram based on ACOM solid-state amplifier and antenna tuner ......23 Tables Table 1-1 | Production versions history ......................10 Table 1-2 | Package contents ..........................
Page 7: General Information
Congratulations on purchasing of our exclusive ACOM L-PROT 2000 Lightning Protector. ACOM is pleased that you have chosen one of our products, and we will endeavor to provide you with the information and support you need to enjoy your purchase for many years.
Page 8 The air spark gaps limit the back EMF that is generated by chokes at the end of a large, fast-falling current pulse. ACOM L-PROT 2000 contains a bandpass filter with excellent RF characteristics in the operating frequency range of 1.8-54 MHz with a steep frequency-response slope in the LW/VLF range and less sloped in the VHF range.
Page 9: To The Reader Of This Manual
To ensure your safety in accordance with safety and security standards, read this manual carefully and follow the steps described in it. Everyone who will use the ACOM L-PROT 2000 must read this manual, and follow the instructions in it, and other accompanying ACOM documentation (see Section ), and consider also 1.5 Additional Documentation...
Page 10: Product Features
The device is equipped with a grounding stud and wing nut which must be grounded. Installation • L-PROT 2000 is designed primarily for installation in an electrical cabinet or on the wall, outside the radio shack. The ACOM L-PROT 2000 Lightning Protector is intended for indoor use only. Product History and Documentation Validity 1.4.
Page 11: Product Identification
User's Manual | ACOM L-PROT 2000 | Lightning Protector Product Identification 1.6. Every ACOM product features an ID (identification) label/plate. The ID label is usually on the rear side of the device. On this label, you can find data identifying the device. Which product identification data are important? Model designation - The model designation is the name of the device;...
Page 12: Owner Assistance
If assistance is needed, you should contact your local dealer first. If necessary, your dealer will contact ACOM for additional guidance. If you still have an issue you need to discuss with one of ACOM's specialists, the contact information is as follows: ACOM Ltd.
Page 13: Safety Considerations, Explicit Definitions
1.9. The ACOM L-PROT 2000 Lightning Protector is intended for indoor use only. The ACOM L-PROT 2000 Lightning Protector is designed to meet international safety standards and complies with the CE safety and electromagnetic compatibility requirements. This User's Manual contains information, warnings (signal words Danger, Warning, Caution and Notice) and instructions, related to hazards, that should be followed by the user in order to ensure safe operation and to keep the amplifier in a safe working condition at all times.
Page 14 RF voltage at the antenna feed point and elements may exceed several thousand volts! NEVER TOUCH AN ANTENNA or antenna insulators during transmission or tuning - this may result in an electric shock or burn. NEVER EXPOSE the L-PROT 2000 to rain, snow, or any liquids.
Page 15: General Information About Lightning Protection
User's Manual | ACOM L-PROT 2000 | Lightning Protector DANGER The electronics inside the L-PROT 2000 operate under high voltage, which is fatal! Never allow anyone to insert any object into the box holes or open the box - this will cause electric shock, burning, and death! 1.9.1.
Page 16 User's Manual | ACOM L-PROT 2000 | Lightning Protector Due of the exceptional magnitude of lightning currents (tens and hundreds of thousands of Amperes), they instantly create a huge amount of heat in objects they pass through, so the objects can ignite, melt down, rupture, or explode.
Page 17 User's Manual | ACOM L-PROT 2000 | Lightning Protector All objects in the area of antennas and nearby devices (within 6 m radius) – tuners, rotators and alike - should be connected by low-impedance connections to a common point called...
Page 18: Grounding For Protection From Electric Shock
WARNING Do not undertake on your own repairs or changes in hardware of the L-PROT 2000 in order not to endanger your or other's health and life and not to damage the device and the equipment connected with it, not covered by warranty. The manufacturer is not liable for another's actions and responsibility shall be assumed by the doer.
Page 19: Installation
Before you install your L-PROT 2000, thoroughly read this manual. First, carefully inspect the cardboard carton and its contents for physical damage. ACOM ships the device in protected container, but it cannot assure that mistreatment by shippers will not occur. If damage is evident, notify your dealer immediately. Delay may void the carrier's warranty.
Page 20: L-Prot 2000 Location Selection And Mounting
ACOM L-PROT 2000 is designed for indoor use only! L-PROT 2000 is designed primarily for installation in an electrical cabinet or on the wall, outside the radio shack. It should be installed low at the building foundation, close to the building's lightning protection grounding system.
Page 21: Figure 2-3 | L-Prot 2000 Mounting Dimensions
There are many different wall types or electrical cabinets. Please, look at your preferred store for mounting fasteners and accessories. ACOM does not offer electrical cabinets as an option for the L-PROT 2000. If you need an electrical cabinet, please look at your preferred electrical component store.
Page 22: Installation And Connections
WARNING Before you start connecting the coaxial cable from the radio station to the L-PROT 2000, ensure that its two ends are not connected to anything and take all necessary precautions that no one has access to them! Place warning signs at both ends reading:...
Page 23: Figure 2-4 | Front Panel - Connections
Figure 2-4 | Front panel - Connections Figure 2-4 | Front panel - Connections Figure 2-5 | Connection diagram based on ACOM solid-state amplifier and antenna tuner Figure 2-5 | Connection diagram based on ACOM solid-state amplifier and antenna tuner...
Page 24: Gnd Connection
The installation procedure described below assumes that you have a functional radio station, i.e. you will be adding the ACOM L-PROT 2000 to an existing radio station. When you have more than one antenna, for example, using four antennas in your radio system, you must add four L-PROT 2000 devices - a single device for each antenna.
Page 25: Cable Connection From The Antenna To The L-Prot 2000
2000 input, and then continue from device output, up to the radio station. You will often need to modify this cable based on the installation path in your building between the antenna and L-PROT 2000. If you need additional binding points, affix the cables further, e.g., to other surrounding objects and walls.
Page 26: Maintenance
User's Manual | ACOM L-PROT 2000 | Lightning Protector 3. MAINTENANCE DANGER Do not open the L-PROT 2000 device. L-PROT 2000 operate under high voltage, which is fatal! Periodic Maintenance 3.1. Periodically (but at least once per year) check all connections, contact cleanliness and the tightening of all connectors, in particular the coaxial ones.
Page 27: Troubleshooting
User's Manual | ACOM L-PROT 2000 | Lightning Protector Troubleshooting 3.3. DANGER Do not open the L-PROT 2000 device. L-PROT 2000 operate under high voltage, which is fatal! In case of trouble, please, inspect all cabling according to Section Connections.
Page 28: Specifications
Operating Frequency Range From 1.8 MHz to 54 MHz; • Please note that the ACOM 500S amplifier can be used with L-PROT 2000 but not on the 4 m band (70 - 70.5 MHz). IN/OUT Ports Two 50 Ω nominal-impedance coaxial RF ports of mirror-identical and interchangeable •...
Page 29 User's Manual | ACOM L-PROT 2000 | Lightning Protector @ 10 kHz: 100 dB min; • Below 3 kHz: 120 dB min; • DC: negligible leakage current; • Frequency Response Slope in the VHF/UHF Range -40 dB/dec typ.; • VHF/UHF Range Attenuation @ 100 MHz: 30 dB min;...
Page 30: Regulatory Requirements
4.3. 4.3.1. Storage Environment The L-PROT 2000 may be kept packed in a dry, ventilated and unheated location (with no chemically active substances such as acids or alkalis) within the following environment ranges: Temperature range: -40 to +70 degrees Celsius (-40 F to 158 •...
Page 31 Disconnect input antenna cable from L-PROT 2000; • Disconnect the L-PROT 2000 GND grounding; • Dismounting the L-PROT 2000 from the wall or from electrical cabinet; • Pack the device in its original cardboard carton (see Section 2.1 Unpacking and Initial •...
Page 32: Information On Disposing And Recycling Of Old Electrical And Electronic Equipment
User's Manual | ACOM L-PROT 2000 | Lightning Protector Information on Disposing and Recycling of Old Electrical and Electronic Equipment 4.4. The information in this section is applicable for countries that have adopted separate waste collection systems. ACOM products cannot be disposed as household waste.
Page 33: Notes
User's Manual | ACOM L-PROT 2000 | Lightning Protector NOTES ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. February 2025 S e c t i o n NOTES | Page 33 of 36...
Page 34 User's Manual | ACOM L-PROT 2000 | Lightning Protector ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. Page 34 of 36 | S e c t i o n NOTES...
Page 35 User's Manual | ACOM L-PROT 2000 | Lightning Protector This manual is for electronic distribution mainly. If you have it on paper and you no longer need it, please, recycle it! The latest versions of our User's Manuals are available at www.acom-bg.com...
Page 36 о о support@acom-bg.com ACOM and the ACOM logo are registered trademarks of ACOM Ltd. in many countries, www.acom-bg.com including the EU and United States. I The used images are illustrative only. Subject to change without notice. I Printed in Bulgaria.