To protect a Telephone System which has a co-located 'Krone' Distribution Frame there are two kits available.
1. PFCP5: $395.00 inc. post (5lines of Telco / Outdoor Extension combined)
2. PFCP10: $485.00 inc. post (10lines of Telco / Outdoor Extension combined)
Note: Additional line protection modules are available if required
To Purchase a Kit:
1. To purchase a standard kit,send your purchase order and contact details to: lemtech@bigpond.com
2. Because of variations in Telephone System hardware,details from your service technician will help to select the right kit for your site. Send the details to lemtech@bigpond.com for a quote.
Tuesday, May 4, 2010
Monday, May 3, 2010
Overvoltage Protection Kit
5 Line Kit for Protection Installation
Protection Installation,
TELCO LINE PROTECTION -(multistage, 10kA surge diversion)
Stage 1. Surge Diverter
Stage 2. Surge Attenuator
Stage 3. Surge Diverter
POWER SUPPLY PROTECTION -(multistage,20kA surge diversion)
Stage 1. Surge Diverter, Active-Neutral-Earth
Stage 2. Surge Attenuator
Stage 3. Surge diverter, Active-Neutral
EARTH CONDUCTOR - Provides a surge bypass away from the appliance.
Overvoltage Protection & Power Conditioning
For Mains Powered, Communications Appliances
OVERVOLTAGE PROTECTION
A lightning strike or high voltage power disturbance can cause a Telephone System to fail by damaging components in its Communications Network, Power Supply and Central Processor.
This usually happens when an incident causes a over-voltage on, or between the Communication Cables, Mains Power Supply and Earth Cables of a building.
Over-voltage Protection will reduce the risk of damage from lightning strikes and power disturbances, and is achieved by the coordinated use of the following three items:
1. Communications Line Protection (multistage module).
2. Power Supply Protection (multistage module).
3. Earth Cable (to bypass surges).
A success rate above 90% can be expected from properly selected, installed and maintained protection equipment.
POWER CONDITIONING
An under voltage power disturbance such as a sag or brown-out can cause data corruption and can sometimes cause component damage. Telephone system and computer power supplies are at risk. A Standby Power Supply or Power Conditioner can solve this problem.
A power failure can last for a fraction of a second or for a number of hours and may cause data corruption or a long period without service. The importance of continuity of service will determine the solution; e.g., for a short outage that causes data corruption, data loss, or system lock-up, a Standby Power Supply is suitable; and, for mission critical equipment, an Uninterruptible Power Supply and additional Battery Cabinet will provide back-up power for a predetermined time.
OVERVOLTAGE PROTECTION
A lightning strike or high voltage power disturbance can cause a Telephone System to fail by damaging components in its Communications Network, Power Supply and Central Processor.
This usually happens when an incident causes a over-voltage on, or between the Communication Cables, Mains Power Supply and Earth Cables of a building.
Over-voltage Protection will reduce the risk of damage from lightning strikes and power disturbances, and is achieved by the coordinated use of the following three items:
1. Communications Line Protection (multistage module).
2. Power Supply Protection (multistage module).
3. Earth Cable (to bypass surges).
A success rate above 90% can be expected from properly selected, installed and maintained protection equipment.
POWER CONDITIONING
An under voltage power disturbance such as a sag or brown-out can cause data corruption and can sometimes cause component damage. Telephone system and computer power supplies are at risk. A Standby Power Supply or Power Conditioner can solve this problem.
A power failure can last for a fraction of a second or for a number of hours and may cause data corruption or a long period without service. The importance of continuity of service will determine the solution; e.g., for a short outage that causes data corruption, data loss, or system lock-up, a Standby Power Supply is suitable; and, for mission critical equipment, an Uninterruptible Power Supply and additional Battery Cabinet will provide back-up power for a predetermined time.
Sunday, May 2, 2010
Lightning Damage Risk Management
For - Mains Powered, Communications Appliances
THUNDERSTORMS:
The number of thunderstorms per year in Australia can be found in the ‘Average Annual Thunder-Day Map supplied by The Bureau of Meteorology.
http://www.bom.gov.au/climate/averages/climatology/thunder/explain_otd_ngnt.pdf
LIGHTNING STRIKE (DIRECT):
A direct strike to power or to communications cables near a building will usually cause major damage to connected appliances.
LIGHTNING STRIKE(INDIRECT):
When lightning strikes a tree or object near a building, it produces electric current in the ground which enters the building through metal connections; i.e. Electrical, Telephone, Water and Gas: Also, via the concrete floor, metal frame and metal reinforcing.
The intensity of a lightning strike and the ability of the soil to disperse the electric current, will determine how far from the strike point that appliances might be affected.
RISK ASSESSMENT:
Thunderstorm-frequency, Building-density, Soil-type and Terrain-exposure will determine your risk level. Generally, equipment in an isolated building on hilly terrain, which is exposed to thunderstorms, has a high risk of damage.
See Australian Standard: AS4262.1—1995 for risk assessment chart.
Appliances that have both mains power and external metallic communications lines are at the highest risk of damage.
TELEPHONE SYSTEM, FACSIMILE, MODEM, CORDLESS PHONE
ANSWER MACHINE, SECURITY, FIRE ALARM, COMPUTER NETWORK
RISK MANAGEMENT:
Damage may cause instant failure, or appear later as software or hardware problems in unprotected appliances. This damage is mostly preventable with the use of Over-voltage Protection Modules, which combine suitable surge diverting and surge blocking devices. The surge diverters cause the lightning current to bypass the equipment and flow safely away through metallic connections or cables, while the surge blocking devices complement the operation of the surge diverters.
THUNDERSTORMS:
The number of thunderstorms per year in Australia can be found in the ‘Average Annual Thunder-Day Map supplied by The Bureau of Meteorology.
http://www.bom.gov.au/climate/averages/climatology/thunder/explain_otd_ngnt.pdf
LIGHTNING STRIKE (DIRECT):
A direct strike to power or to communications cables near a building will usually cause major damage to connected appliances.
LIGHTNING STRIKE(INDIRECT):
When lightning strikes a tree or object near a building, it produces electric current in the ground which enters the building through metal connections; i.e. Electrical, Telephone, Water and Gas: Also, via the concrete floor, metal frame and metal reinforcing.
The intensity of a lightning strike and the ability of the soil to disperse the electric current, will determine how far from the strike point that appliances might be affected.
RISK ASSESSMENT:
Thunderstorm-frequency, Building-density, Soil-type and Terrain-exposure will determine your risk level. Generally, equipment in an isolated building on hilly terrain, which is exposed to thunderstorms, has a high risk of damage.
See Australian Standard: AS4262.1—1995 for risk assessment chart.
Appliances that have both mains power and external metallic communications lines are at the highest risk of damage.
TELEPHONE SYSTEM, FACSIMILE, MODEM, CORDLESS PHONE
ANSWER MACHINE, SECURITY, FIRE ALARM, COMPUTER NETWORK
RISK MANAGEMENT:
Damage may cause instant failure, or appear later as software or hardware problems in unprotected appliances. This damage is mostly preventable with the use of Over-voltage Protection Modules, which combine suitable surge diverting and surge blocking devices. The surge diverters cause the lightning current to bypass the equipment and flow safely away through metallic connections or cables, while the surge blocking devices complement the operation of the surge diverters.
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