Download REQUEST FOR QUOTATION

P.S NO. : P514451072
PURCHASESPECIFICATION
REV.NO :
00
GROUP : TRACTIONENGINEERING
A4-11
PAGE
04
OF
13
B. Batterv
1. Batteries
sha11 be indoor,
2. The following
Fi
*c
factors
shall
stat.ionary
tlpe,
be considered
SMF Lead Acid
for
t1pe.
Batt.ery sizing,
a.
b.
Load power factor of 0.8
Battery current =
Inverter
rated KVA x Load P.F.
Inverter efficiencv
x end Ce1l voltaqe x No. of cel1s
c.
d.
Minimum end cell- voltage
Back up time 15 minutes
>.
>F
,r? 8
?_3
1.75 V per ce11
C. Inverter
qlo
1,. The inverter
sha1l operate satisfactorily
for variation
from fully
discharged condition
of the battery
to rapid
battery
and inverter
output foad current.
.E
<<E
zi r rLh e
o
6k.E
23C
vq
2.
>-
z >2
<b:
F
= -
r r
d e
?
ytr:
E>.
4.
oP
€6
F
It shall be possible to vary the inverter
output volt.age. rhis adjustment
specified
when the inverter
is in operation.
The
sf eadw
sf af e
clrf nrrf
9 v g V J v g l y g L v v + u g Y v v g g L r l v J \ ! ! v v
rrol tacrp
:nd
output voltage within +/- 5% of
shal-l be possibl-e to be made
f recrrcncrz
( f rcc
rrrnni nrrl
rrafiatiOn
of
inverter
sha11 not exceed +/- 1-% from the set value for specified
input
power supply conditions
from no load to ful-1 load condition
and load power
factor varj-ation from 0.6 lag to 1.0.
r> ^EE . g
Ea
of DC bus voltage
charge voltage of
The UPS output voltage waveform sha11 be sinusoidal.
The Total Harmonic
distortion
of voltage waveform at inverter
output sha1l not exceed 38 if
RMS val-ue of the fundamental considering
load up to maximum
any linear
rated output of UPS system at rated power factor and not exceeding 5%
under non-l-inear load.
5. UPS shall have capacity t.o deliver
a minimum overload of 1,25? for 10
minutes and
150? for 60 secs. UPs shal-l be provided with current circuit
to avoid excessive loading beyond its permissible
overload withstand
capability.
5. Inverter
sha11 be 'phase locked'
to the stabilized
blpass power supply as
+/- 6e" of
long as stabilized
by'pass supply frequency remain within
nominal. When b)pass supply frequency variation
exceeds the above limits,
the inverter
sha11 be delinked from mains. Free running frequency
tolerance limit
shal1 not be exceed +/- LZ. Facility
sha11 afso be
provided for adjustment of slmchronizing
frequency from 1-8 to 6?
in steps of 1*.
'7.
Both Sync and Async transfer
programmaD-Le.
8. When the Inverter
not be more than
facility
shall
be provided
& it
should be
is in operation,
the temperat.ure rise in the panel
15 Deg.C above ambient for all operating conditions.
shall