SurgeBusters provide fast, effective transient surge protection for
critical equipment connected to communication and instrumentation loops.
Each product is tailored for a specific application and each unit provides both
high speed and brute force techniques to limit induced voltages to predetermined
safe operating levels.
Specific products are available for audio (FSK, PSK) and digital (RS232/RS422)
communication channels and for instrumentation loops (0 to +/- 1 mA, 4 to 20 mA,
0 to 5 V).
Combined together, SurgeBusters provide cost-effective insurance against
equipment damage due to voltage surges and transients.
IAR SurgeBusters are field-proven and are used extensively on...
- Supervisory and Data Acquisition Equipment
- Data Modems, both digital and audio
- Pressure/Temperature transmitters
General Operating Information
SurgeBusters are three stage suppression-networks that are inserted in
series between the field wiring and the customer's load.
During normal operation, the unit is transparent to the system.
However, if a surge exceeding the clamp voltage of the network is detected,
then the first stage uses brute force techniques to shunt the surge current to
ground at amperages up to 5000 Amps.
The second stage acts as a high frequency choke that limits the surge current
and energy that can be passed to the load.
The final stage acts as an extremely fast voltage clamp (<= 1 Nano-Second)
that prevents the output voltage from exceeding the predetermined level of the
After the surge has passed, the unit automatically resets and allows normal
operation to resume.
Transient suppressors for instrumentation loops
provide protection for
current loops up to 70 mAmps with source voltages up to 28 volts.
Both negative and positive surges relative to earth ground are detected and
Units are made to fit directly within existing housings of various transducer
Protectors for communication channels are available for 4-wire dedicated circuits.
Current loop, RS422/485, and audio modems are all supported by different versions
of the TER-057.
This unit is designed for RDI snaptrack mounting, allowing easy placement
in existing facilities.
Customer connections are made to removable terminal blocks suitable for up to
#14 awg wire.
Power Circuits Protectors
Protection for AC lines range from 5 amp RDI snaptrack mountable devices to
60 amp enclosed station protectors.
Intended for use only in industrial applications, this series of devices
protects surge sensitive gear such as PLC's, RTU's and main computers.