Electrical Industry Canada: Arc Flash, Shock Hazard, & Fire Safety - 5

Q: How is
troubleshooting time decreased
with
ISOtechnologyTM?
When a fault happens, i.e., wire-to-wire short, short and ground, or
short and open, the ISOtechnologyTM allows a technician to locate
where the disconnect location is. The location, which is between two
devices, will be made available at the control unit. Therefore, the
technician can now concentrate on troubleshooting only between
these two points. It removes the laborious and time-consuming
process of elimination method, checking between one device to
another.
Q: Can the whole system still run efficiently if one fault, i.e.,
wire-to-wire short applied to the circuit?
Yes. By setting all the ISOtechnologyTM devices as isolators, the
system survivability is increased. Therefore, a single fault will not
affect the operation of the fire alarm system at all.
Q: How does pin-point wire-to-wire short identification
reduce service time?
When a wire-to-wire short happens within a wiring loop, the two
devices adjacent to the short location on the wires will isolate
themselves. These devices and location will be made known at the
control unit. Then the technician will know where to begin
troubleshooting efforts instead of searching for some time to find the
location of the short.
Q: How would one go about expanding their already
existing Siemens system?
This depends on the current system in the field, and there could be
variations on how we could approach it. For example, if the system
installed is an addressable legacy system, we will look for the most
efficient way to migrate the head-end (or the control unit) then
moving on to the devices as the field is ready. The process is much
simpler for our most current fire alarm systems (i.e., earlier version
without ISOtechnologyTM). The best way to find out how is by
contacting our Branches or Partners in the area for solutions to your
specific site design.
ELECTRICAL INDUS TRY CANADA
VOLUME 1, ISSUE 6
5
The image below depicts a traditional device in comparison to Siemens
ISOtechnology devices with built-in isolation. Each of these devices are compatible
with Modular, Compact, or 50 Point panels.

https://new.siemens.com/ca/en/products/buildingtechnologies/fire-safety.html https://new.siemens.com/ca/en/products/buildingtechnologies/fire-safety.html

Electrical Industry Canada: Arc Flash, Shock Hazard, & Fire Safety

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