Datasheet

Specifications are subject to change without notice. Copyright 2011 Eaton Industries Pty Ltd
Technical Specification –ESF series surge filters
Tvss Doc# 510ESF
Page 4 of 6
SINGLE POINT EARTHING
At the point of entry, the earth conductor is the
common surge conductor. To prevent damage and
minimize personal risk, it is imperative that all
grounding systems are brought together at the supply
connection point. As an example, the earth provided
for equipment to be connected to this SPD must be
connected to the same point as the SPD’s earth,
back at the source. DO NOT daisy chain earth from
the SPD to the device that the SPD is protecting.
FAILURE TO OBSERVE THIS POINT WILL
RESULT IN A MUCH LOWER PROTECTION
LEVEL, ALLOWING DAMAGE TO CONNECTED
EQUIPMENT. UNDER SURGE CONDITIONS, IT
MAY ALSO REPRESENT A POTENTIAL SHOCK
HAZARD.
Local regulations may require structural earth
bonding under certain conditions. Always follow the
appropriate regulations and consult with the factory
or distributor if a conflict exists. We recommend the
use of equipotential grounding devices between all
services.
RECOMMENDED PROTECTION &
DISCONNECTOR DEVICES
We recommend the use of HRC GL, 500V, >25KAIC
rated fusing or rated in accordance with the supply
connection on the line side of the filter. We do NOT
recommend the use of circuit breakers as primary
protection. HRC GL fuses are more appropriate for
circuits subjected to surges as they are less prone to
failure and provide a more effective path for high
frequency energy. Under surge conditions, a circuit
breaker’s trip coils may cause large voltage drops,
leading to internal arcing. These drops will reduce
current flow and increase let-through voltage. Under
some conditions, physical damage may occur to the
breaker. This will result in increased unreliability and
reduced safety where the breaker may not release in
fault conditions.
If it is required to isolate the unit for servicing, there
are 3 options:
1. Use three “BS88-style” (cylindrical) HRC fuses in
combination with an isolation switch;
2. Use three 22x58mm HRC fuses in individual
holders; or
3. Use three “NH-style” HRC fuses in a 3-pole pull-
out drawer-type holder.
If there is no other primary SWB load other than this
filter (i.e. every piece of equipment on the site runs
through this filter, then an isolation switch may used
alone, the main fuses providing line protection.
For load side protection, circuit breakers OR fuses
are acceptable, due to reduced energy levels
afforded by the SPD.
READ THE MANUAL!
Step by step installations instructions are provided
with each unit to guide you through an effective
installation practice. This will help to ensure the
performance of the filter when followed correctly.
WARRANTY
Eaton warrants this unit against faulty parts and
workmanship for a period of 5 years from the date of
purchase. If this product fails to operate correctly,
please contact your Eaton representative. This
warranty doesn’t cover neglect or intentional misuse.
As this product is intended for use in electrically
harsh environments no claim is made of suitability for
purpose.