M-System
lightning surge protection devices are designed for the rugged industrial
environment. Products range from the standard factory floor signals
such as 4-20mA, thermocouple, RTD and strain gauge to filtering and
protecting the AC Power in instrument panels.
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| Every
year lightning destroys many millions of dollars of sensitive electronic
equipment. Millions more are lost through extended down time and the
loss of production or mission-critical information. That's why companies
around the world depend on in-line M-RESTER Lightning Surge Protectors
to protect both signal and power wires. M-System offers superior protection
and selection across a side range of applications. |
 The
nuts and bolts of the world's best Lightning Surge Protectors
- Protects
sensor, signal and power lines.
- Superior
protection and selection across a wide range of applications.
- M-RESTERs
can be removed and tested without disconnecting wires.
- Base socket
connects input/output signals when an element is removed.
- CE marking
and UL approval for selected models.
- Lightweight,
easy-to-handle, plug-in
construction
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| Understanding
the Problem |
Electric
charges generated in a thunderstorm discharge to the ground with
a current of approximately 20kA to 150kA.
Lightning induced surges occur in a cable as a result of rapid and
violent changes in the magnetic field intensity generated around
the cable.
The surge propagates in the cable, and instantaneously applies high
energy to the electronics equipment connected to both ends of the
cable.
Interline breakdowns occur when
electronic components are directly hit and destroyed by lightning
surges generated between two cable conductors connected to the equipment.
In discharge breakdowns, a lightning surge creates
a very high potential difference between two conductors and ground.
As a result, a discharge occurs between some parts of the circuit
and areas electrically grounded, such as the metal housing. Electronic
components are damaged by some of the discharge current that flows
through the circuit.
The effects of induced surges on connected equipment are more severe
when the connecting cable is longer;
the induced current is higher; or the equipment is located closer
to the site of the lightning strike. |
