Precautions, Wiring – Hochiki YBO-R/SCIM User Manual
Page 2

2-3-0-367/ISS6/OCT13
Precautions
Ensure that both devices are installed in accordance with local standards or regulations.
Only install in suitable environments, the following should be avoided : -
Excessive ambient temperature.
Where excessive condensation or moisture is present.
Hazardous areas.
Do not use a high voltage tester on these devices.
Ensure that the YBO-R/SCI & YBO-R/SCIM base isolators are securely fixed to the ceiling or other suitable
surface.
Ensure that the terminals on both devices are securely fastened.
When fitting the YBO-R/SCI & YBO-R/SCIM isolator bases, for proper wiring supervision ensure that the cables
are routed through the base terminals and not spurred off a main wiring route.
Ensure the YBO-R/SCI & YBO-R/SCIM base isolators are fitted with either a sensor or a cover (on HRE
systems only cover may be fitted)
Ensure yellow isolating LED on either device is easily visible.
Wiring
The wiring of the YBO-R/SCI & YBO-R/SCIM short
circuit isolator bases should be made as shown right:
A: Loop (+)
B: Loop (-)
C: Cable Screen
Note:- The Remote Indicator will only indicate a fire
condition, but not when the base is isolating.
YBO-R/SCI
0832-CPD-0963
09
EN54-17 Short Circuit Isolators
Hochiki Europe (UK) Ltd
Grosvenor Road, Gillingham Business Park,
Gillingham, Kent, ME8 0SA, England Telephone:
+44(0)1634 260133 Facsimile: +44(0)1634 260132
Email: [email protected]
Web: www.hochikieurope.com
Hochiki Europe (UK) Ltd. reserves the right to alter the
specification of its products from time to time without notice.
Although every effort has been made to ensure the accuracy of
the information contained within this document it is not warranted
or represented by Hochiki Europe (UK) Ltd. to be a complete and
up-to-date description. Please check our web site for the latest
version of this document.
Protocol specified in TI/006