Network Communications News (NCN) October 2017 | Page 36
Total.book Page 268 Saturday, September 7, 2013 5:22 PM
Total.book Page 267 Saturday, September 7, 2013 5:22 PM
UPS
Applicable Standards - Standards Relevant to UPS Installations
Standards Relevant to Lead Acid Batteries
Standards Relevant to UPS Installations
Standard
CE
Applicable Standards - Standards Relevant to Lead Acid Batteries
Details
Standard
Marking in compliance with the following European
directives:
• Low Voltage Directive 2006/95/EC
• EMC Directive 2004/108/EC
Details
BS 6133:1995 Code of practice for safe operation of lead-
acid stationary batteries
BS 6290-4: 1997 Lead-acid stationary cells and batteries.
Specification for classifying valve regulated
types
ISO/IEC 27001:2005 Information Security Standards BS 25999-1:2006 Business continuity management. Part 1: Code of
practice BS EN 60896-1:1992, IEC BS 7698-1:1993, ISO
8528-1:1993 Reciprocating internal combustion engine driven
alternating current generating sets. Specification
for application, ratings and performance Stationary lead-acid batteries. General
requirements and methods of test. Vented
type
BS EN 60896-2:1996, IEC ER G59/1 Recommendations for the connection of
embedded generating plant to the Public Electricity
Suppliers distribution systems. Energy Networks
Association Stationary lead-acid batteries. General
requirements and methods of test. Valve
regulated type
BS EN 50272-2:2001 Safety requirements for secondary batteries
and battery installations. Stationary batteries
BS EN 60529:1992 Specification for degrees of protection provided by
enclosures (IP code)
BS EN 60439-4:2004: Low-voltage switchgear and
control gear assemblies ANSI/IEEE 450-2002 IEEE recommended practice for
maintenance, testing and replacement of
vented lead-acid batteries for stationary
applications
BS 7671:2001 Requirements for electrical installations. IEE
Wiring Regulations. Sixteenth edition ANSI/IEEE 1184-1994 IEEE recommended guide for selection and
sizing batteries for Uninterruptible Power
Supplies (UPS)
BS EN 50310:2006 Application of equipotential bonding and earthing
in buildings with information technology equipment Low-voltage switchgear and control gear
assemblies ANSI/IEEE 1188-1996: BS EN 60439-4:2004 IEEE recommended practice for
maintenance, testing and replacement of
valve-regulated lead-acid (VRLA) batteries
for stationary applications
Here, VFD means that the UPS
output is dependent on mains
voltage and frequency, while VI
describes a UPS output dependent
on mains frequency variations,
while mains Voltage variations are
The UPS Handbook
regulated
(Independent). VFI refers
to a UPS output Independent of
mai ns Volta ge a n d Frequ e nc y
var i at i ons . Fig.1 (previou s p a ge)
shows maximum a l l owa b l e
response times for the t h re e
d i f fe re nt cla s s es to var io u s
mai ns p ro blems .
UPS output waveform is the
second step of the EN 62040-
3 classification. This is rated as
either sinusoidal or non-sinusoidal,
according to its harmonic content,
and the linearity or otherwise of
the reference load conditions. It
allows for separate assessment of
this waveform on battery and on
mains operation.
EN 62040-3’s third and final
step concerns the UPS outp ut’s
dynamic performance. It provides
a set of graphs showing transient
overvoltage and undervoltage
limits against transient duration
time for different circumstances:
hange of operation mode
C
performance
S tep linear load performance in
mains/battery mode
36 | October 2017
Figure 2 (left)
Figure 3 (right)
tep reference non-linear
S
load per formance in mains/
battery mode
These graphs and other
detailed information about EN
267 are shown in the UPS
62040-3
268
Handbook,
revised fourth edition.
This shows the highest possible
UPS classification as VFI-SS-111,
which can only be achieved by
modern, true on-line, double
conversion UPS topologies.
Energy Networks
Association ER G5/4-1
T h i s re co mme n d at i o n state s
t h at sat i sfa cto r y o p e rat i o n of
t h e e l e ct r i c i t y su p p l y sy ste m
a n d u se r ’ s e q u i p m e nt i s o n l y
o bta i n e d w h e re e l e ct ro ma g n et i c
co mp at i b i l i t y ( EM C ) b et we e n
t h e m exi st s. B y l i m i t i n g
t h e h a r m o n i c e mi ssi o n s of
c u sto me r s’ n o n - l i n e a r l o a d s a n d
ge n e rat i n g p l a nt , E R G 5 /4- 1 h e l p s
to f u l f i l t h e te c h n i c a l o b j e ct i ve of
t h e UK EM C Re g u l at i o n s.
While harmonic distortion
limits are not governed by statute,
electrical design consultants
and manufacturers must ensure
equipment emissions when
connected to the supply system
do not exceed the planning
levels set by G5/4-1 and that
such harmonic distortions are
acceptable to the Network
Operating Company (NOC).
Standards applicable to UPS
installations and The
lead-acid
UPS Handbook
batteries
Fig. 2 lists standards relevant
to UPS installations, while Fig. 3
covers standards relevant to lead-
acid batteries.
Conclusion
This ar ticle has introduced
readers to the legislative
landscape per taining to UPSs,
their batteries and installation.
More information is available
from the UPS Handbook Four th
Edition (revised), obtainable from
Uninterruptible Power Supplies
Ltd Ltd’s website.
However, to ensure that your
UPS system is fully compliant with
all relevant standards – without
unnecessary or inappropriate
investment – it’s best to consult
with a reputable UPS supplier who
can review your situation and
advise on a suitable strategy.
More information: Uninterruptible
Power Supplies Ltd upspower.co.uk