Clarifications issued for 1 MW Canal Top Solar Power Project

Clarifications issued for 1 MW Canal Top Solar Power Project Gollavanitippa, Bhimavaram Rural Mandal, West Godavari district
against clarifications sought by M/s Vikram Solar Pvt. Ltd
S.No
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Point
Tender
Page no
Reference
1.25MVA with 10% over load 3.1.1 vii
44
capacity & secondary voltage rating
11KV
Each solar PV module shall be
warranted by the manufacturer for 3.2.3
output wattage, which should not be
less than 92.5% at the end of 15 years
and 82.5% at the end of 25 years.
At the same time it will withstand
storm condition with wind speed of 3.24
150 kmph or of wind speed
applicable for the zone, as per
relevant India wind loan codes,
whichever is higher
The PCU shall have provision for
galvanic isolation. Each solid state 3.26
electronic device shall have to be
protected to ensure long life of the
inverter as well as smooth
functioning of the inverter.
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Clarification Sought
Clarification issued
Transformer
secondary Confirmed the transformer secondary
voltage rating should be voltage as 33 KV
33 kv as evacuation is on
33 kv. kindly confirm the
same
The amendment is already issued and
Vikram modules have uploaded in the website as follows:
guaranteed power of 90% (a) The SPV panels shall be warranty of
for 12 years & 80% for 25
minimum 25 years.
years
(b) The SPV panel must be warranted for
their output peak watt capacity which
shall not be less than 90% at the end of
10 years and 80% at the end of 25 years
We design structure in The structure should with stand storm
compliance with IS 875 condition with wind speed of 150 kmph
norms. So whatever max
wind speed is required in
the
particular
zone
accordingly
structure
would be designed.
Galvanic isolation will be The tender condition shall be followed
provided at transformer
level. The same will not
be provided at inverter
level.
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Control & Monitoring of all the
equipment of the Plant up to power 3.2.7 vii
outlet shall be able to carry out from
the SCADA.
Data Centre: Remote Monitoring
SCADA Server SW for the Plant
3.2.8 . 3
Remote Network support shall be
capable of sending data to Remote 3.2.9
Monitoring SCADA Server- over low
bandwidth and unreliable Internet
connections like 2G/3G USB data
cards
HT Cables : 3 core XLPE Cable of
35 sq. mm. of suitable higher size 3.2.20
cooper armored cable conforming to
IS 7098
LT power cables: LT Power Cable
shall be 1100 V grade, single core,
300 Sq.mm or suitable higher size of
Multi-standard copper conductor,
XLPE insulated with PVC inner
sheath and outer sheath made on 3.2.20
FRLS PVC compound. The armoring
shall be of Aluminum / galvanized
steel round wire.
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Only
monitoring
in
SCADA provided plant
SCADA along with server
will be provided. Data
center connection to Solar
plant in NREDCAP scope.
A
designated
VPN
network
would
be
required to transfer data
from plant local SCADA
server to Central HO
server.
A
designated
VPN
network
would
be
required to transfer data
from plant local SCADA
server to Central HO
server. This would be in
scope of NREDCAP
Agreed
Agreed
Agreed
HT cable size & type will The tender condition shall be followed
be decided at the time of
detail engg taking into
consideration the load. HT
cable will be of A1 type.
LT cable size & type of The tender condition shall be followed
cable will be decided at
the time of detail engg.
Taking into consideration
the load. LT cable will be
of A1 type.
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The cable used for 24V Battery
Charger shall be of Two core, 6
Sqmm or Higher size Multi-standard
copper conductor type.
Minimum conductor cross section of
power cables shall be 4 Sq.mm for
lighting ventilation blowers, jet pump
and other auxiliaries.
HV winding Rated voltage: 11 KV 3.2.21
Variation of +/- 5% @ 2.5%
Special Tests
a) Short Circuit with stand test
b) Measurement of Zero Sequence 3.2.21 C
impedance for Three Phase
Transformer
c) Measurement of acoustic Sound
level.
d) Measurement of Harmonics of
No load current
e) Measurement of capacitance and
Tan Delta between Windings to
Earth and between windings.
f) Measurement
of
Transient
voltage transfer characteristics.
g) Magnetic Balance test on
Three phase Transformer
h) Sweep Frequency Response
Analysis
Outdoor type Vacum Circuit Breaker
(ABB/L&T/Siemens/any
other 3.2.22
standard make)
General Layout drawing of Solar PV
power plant locating control room 3.2.30
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HV winding rated voltage Agreed
should be 33 KV as
evacuation is in 33 kv
Standard test certificate The tender condition shall be followed
will be provided for type
& routine test. Routine
test report will be
provided
during
inspection stage. No third
party / special test shall be
done by VSPL.
VSPL proposes to add Agreed
Schneider also as Outdoor
VCB supplier.
In order to prepare general The tenderer may inspect the site by
layout please provide auto informing in advance the Executive
building, module yard, internal
roadways, drainage system, fencing,
fate,
water
distribution
line
mentioning all lines and levels.
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General Layout drawing of Solar PV
power plant locating control room 3.2.30
building, module yard, internal
roadways, drainage system, fencing,
gate,
water
distribution
line
mentioning all lines and levels.
SINGLE LINE DIAGRAM – 1 MW Annexure
D
Please confirm whether watch tower General
& CCTV required for security &
surveillance
Please specify the point of metering General
that will be considered for plant
performance
Evacuation from plant to nearest
substation 11/33 KV s/s at General
Gollavanitippa (around 2 km) in is
whose scope ie., NREDCAP or
VSPL please clarify
cad drawing for canal and Engineer (RE), West
nearby area.
Mobile:9000550989
73
Godavari
dist.
Please specify type of Fencing along the project site shall be
fencing that needs to be arranged. Further, it is the responsibility of
considered
the tenderer to maintain the project for 10
years period.
SLD is having 250 kw The single line diagram is indicative.
inverter connecting to
1.25 MVA transformer,
please clarify
Not required
The energy meters shall be installed at the
substation.
It is under the scope of tenderer.
VC & Managing Director