TECHNICAL
PARTICULARS OF THE DIESEL ENGINE & AUXILIARY SYSTEM
1. DIESEL ENGINE
1.1 Basic type IC
type, 4 strokes, vertical single acting, with electronic fuel control governor
& STC Injector.
1.2 Rating
Net
Engine output (prime power) 1180 BHP/
880 KWm
1.3 Make &
Cat. No Cummins
India Ltd., KTA-38-G5
1.4 Catalogue
Rating Prime
power continuous rating
1.5 Reference
standards for generator sets ISO 8528, 3046/1
BS-5514, 4999,5000
IEC 34/1
1.6 Diesel engine
BHP 1180 BHP with 10 % margins
(1010 KVA)
1.7 Engine Weight 4500
Kg
1.8 Dimensions of
DG set 5.7 X 2.2 X 3.3 mtrs. Approx.
1.9 Foundation
size 6.7 X 3.2 Mtrs.
Approx.
1.10 Room
dimensions 7.4 ( L) x 6 (W) x 8
(H) mtrs.
1.11 Rating under
a) Catalogue rating a NTP
1180 BHP
condition
b)
site conditions 1180 BHP
c) test bed condition 1180
BHP
1.12 Rotation direction (viewed from free
end) CW from coupling end
1.13 Type
of start Motor
Driven compressor type (Air Start)
1.14 Engine Noise level (dB) 110 dBA at 1 mtr distance
1.15 Engine Noise
level with accoustic(dB) 75 dBA
1.16 Operating speed 1500 RPM
1.17 Max over speed permissible 1800 RPM
1.18 Number of strokes per cycle 4
strokes
1.19 Number of cylinders 12 Cylinders
1.20
Air cylinder capacity 1
kl cap for 3 nos. of start and DG lockout
1.21
Operating pressure 150
PSIG
1.22
Arrangement of cylinders 60 degree, Vee with rigid gray cast iron cylinder
block complete with integral oil and water galleries
1.23
Bore
159
mm
1.24 Stroke 159 mm
1.25
Compression ratio
13.9:1
1.26 Maximum period for which the diesel can 3 Min.
operate without cooling water after
starting
1.27 Maximum
firing pressure 10.56 Kg/cm² (g)
1.28 Mean piston speed 7.9 mps
1.29 Brake mean
effective pressure at 10.46 K Pa
rated load(BMEP)
1.30 Cyclic irregularity < 1 / 75 %
1.31 Maximum engine rating 880 KW + 10% over load
1.32 Overload capacity 10
% overload for 1 hour in 12 hours
1.33 Combined shaft system critical Speeds 2100 RPM
1.34 Turbocharger critical speeds 1,00,00
RPM
1.35 Firing order (viewed from power 1R-6L-5R-2L-3R-4L-6R-1L-2R-5L-4R-3L
take of end)
1.36 Jacket Water temperature rise at rated load
70— C to 95 — C
1.37 Minimum time of operation without
cooling water availability during start up 3 min
1.37
a) Raw water Flow rate 673 lpm
b) Raw water Temp. rise 43.3 — C
c) Raw water inlet temp. 33.3 — C
1.38 Jacket water temp. to & from engine 95ºC
1.39 Fuel system injector pressure 10.56
Kg/cm² (g)
1.40 Fuel consumption at rated load 201
gms / KWHR (± 5%)
1.41 Fuel specification for engine Grade no.2D as
perASTM D975/ IS-
1460
2000
1.42 Lubricating
system oil pressure at pump 3.2 – 4.9 Kg/cm² (g)
discharge
1.43 Lubricating
oil consumption at rated Load 0.18 lph / kWh
1.44 Time for
diesel engine to start / run without 3
minutes
supply of raw water
1.45 Maximum time required to start the 15 Sec.
diesel from normal preheated condition
to bring up to rated speed and load upto
its capacity without exceeding voltage
and frequency limits.
1.46 Maximum allowable lubricating oil
temperature. 105°C
1.47
Ventilation air requirement
Temp.
rise - 5 oC ambient 1200 lph.
Temp.
rise - 10 oC ambient
7800 lph.
1.48 Capacity of hoist provided for normal maintenance 5 Tons
1.49
Engine management system shall be provided in PCC (Power
Command Control Panel)
1.50 Seismic
requirements (as
per IS 1893)
1.50 Emission
norms compatibility meeting
latest CPCB emission norms
1.55 Overload
capacity for 1 hr in 12 consecutive
hours of operation, 10%
1.56
Duration of no load operation Half an hour in
12 hours(Cumulative 2 hours in 3 month)
1.57 Duration of 30%load
30
minute
1.58 Parellel
operation of DG set as required. Provided
1.59 Sequence of loads to be applied to DG
Set As
per tender
2.0 TECHNICAL
PARTICULARS OF GENERATOR AND EXCITATION SYSTEM
2.1 GENERATOR
AND ACCESSORIES
Type Brush
less, revolving field
Make
STAMFORD
Catalogue no. HCK634Z2
Rating 1100 KVA
Prime power
continuous output rating (Under site condition) 800
KW.
Alternator weight 2270 Kg
No. of phases 3 phase, 4
wire
Winding connection
Y (Star)
Overload capacity
for 1 hour in
12 consecutive
hours of operation 10%
Rated Frequency 50 Hz
Winding Double
layer type (lap)
Dual coated class 200
copper wires
Epoxy
coated winding
Winding
pitch
Skewed stator 2/3 winding pitch
Winding leads 6
Stampings low
silicon stamping with 90-degree orientation
Damper winding Continuous
Design ambient
temperature 45 °C
Derating factor
for site condition 3 %
Power factor 0.8 lag
Rated
voltage/Voltage at terminal
Block 415
Volts.
Rated current per
phase 1330 Amps
Short circuit
current per phase 3 x Ifl for 3 second
Limits of voltage
adjustments ± 5 %
Frequency adjustment +/- 5%
Type of
cooling Natural air
Cooling Air 1.614
m3 / s
Bearing Drive End Ball 6224 – 2RS
(ISO)
Bearing on non
drive end Ball 6317 –
2RS (ISO)
Types of
Enclosure IP
23
Speed 1500 RPM
Frequency 50
Hz.
Over speed
permissible for 2 minutes 20
%
Field current at
rated output and Voltage 2 Amps
& 72 volt
Insulation Stator H
Rotor H
Temperature rise
restricted Class F
Over load capability for 1 hours in :
10 %
12 consecutive hours of operation
without undue
heating of the
alternator or
any other mechanical
trouble.
Momentary over
load current permissible 150%
for 15 second
Permissible transient voltage dip under
starting of highest rating motor 15%
Steady state voltage regulation (0.5-1%) 0.50%
Harmonic loading
of generator 70% of rated capacity
Telephonic Influence
factor 2
%
Generator parameters
Synchronous
Reactances xd, xq 201%
& 129 %
Transient
Reactance Xd'
12
%
Sub transient
Reactance Xd" 9 %
Sub transient
Reactance Xq" 18
%
Zero sequence
reactance Xo,
2 %
Negative sequence
reactance X2 14 %
Leakage reactance 9%
Time constant
Sub transient time constant 0.015 S
Transient time constant 0.045 S
OC field time constant 3.17 sec
Armature time constant 0.026 S
Short circuit
ratio 0.497
Waveform deviation
factor on load 10% L to L
High harmonic load
capability 2.5 %
Sustain short
circuit current 300 % for 3 sec.
Resistance of main
field winding at
operating
temperature 0.00384 Ohms
Full load
efficiency
95.4 %
Specified
operating conditions over 45° C ambient class
F
Generator
Constructional Details (referred GA
drawing enclosed)
Air gap
length
3 mm
Terminal box
arrangement and
Extension Box
recommended cable
for connections
Main Exciter
Type of exciter Brush less type with rotating diodes complete with revolving
armature A.C exciter, permanent magnet generator (PMG) type pilot exciter.
Rated voltage 72 Volts
Rated current 2.0 Amps
Insulation
class Stator Class H
Rotor Class H
Automatic Voltage
Regulator
Literature on AVR,
Exciter, generator Enclosed
Type of
regulator Solid
State (Automatic voltage regulator).
AVR shall have cross compensation feature.
Make NUPART
Transient and
steady state voltage variation within
±0. 5 % (as per IS 4722)
Burden of AVR < 5 VA
Dead band of
regulator (if any ) Zero
Voltage setting range :
1 %.
Steady state accuracy :
+/- 1%
Response time :Less then 100 milli sec.
Response of voltage regulator &
excitation system.
Maximum period to recover the generator
voltage
to the set value of step rejection of Rated
load at
rated power factor <
10 Second
Time period for
which generator shall be capable
of withstanding
Without injury a 3 phase short
ckt at rated KVA
and power factor at 5 %
Over voltage with
fixed excitation 3
second
Voltage adjustment
±
10%
Voltage setting
range of regulator ±
0.5%
Steady state
accuracy of the voltage regulator
from no load to
full load As
per IS 4722
Quadrature droop
circuit shall be provided to limit the
reactive KVA during parallel operation
TEMPERATURE DETECTORS
No. : Minimum 2 nos resistance type temperature detector for
phase and 2 nos. on bearing
Type :
PT-100 (RTDs & BTDs )
SPACE HEATERS
Capacity :
60 Watt rated 240W , 50 Hz
Number : 4 nos.
3. CONTROL
PANEL
Type of control
panel Vertical free standing,
floor mounting Indoor type
Make
: Powerica
Type of control
system 24 V DC
Material CRCA
sheet steel (2 mm thick), dust weather and vermin proof powder coated epoxy
painting.
Degree of
protection IP 54 (AS PER IS
2147)
Cable entry bottom
Overload capacity 10 %
Design ambient air
temperature 45 — C
HRC Fuse breaking capacity 80 KA
HRC Fuse continuous current rating 2A/6A/10A/16A
Colors of the
finish paints
a) Outside Siemens Grey as
per IS-5
b) Inside Siemens Grey
as per IS-5
The final finish shall be with powder coated painting.
Control Cabinet compartmentalised
into sections segregated by sheet metal barriers
Control panels Minimum 2 sections
Control panel shall containing :
i) Instrument panels
ii) Annunciators
iii) Starter / Aux MCC panels
iv) Synchroscope
v) Bus-bar panels
LCD display on electronic control
panel water
temperature, oil pressure, engine RPM, Engine (Engine mounted panel) run hour meter
Type of synchroscope Cummins make provided in GCU
(Generator control unit)
Type of AMF
Provided in (Generator
control unit)
PC compatibility Control panel is
PLC based and PC compatible, GCU provided with RS 485 indication port
DG incomer breaker ACB
(EDO Type) L & T Make provided in AMF panel
Starters for DG
auxiliaries provided
in DG panel
TECHNICAL PARTICULARS OF
CONTROL, INSTRUMENTATION & PROTECTION
Scheme of
AMF (Auto Mains Failures)
Under the normal
condition, all the ac loads will be fed by the `mains' power supply. The
proposed D.G. Sets will be connected to the emergency load buses, which will
also be fed by the `mains' power supply under normal condition and the D.G.
sets will serve as stand-by. In the event of `mains' power failure, all breaker
on that bus will be opened up automatically and starting impulses shall be
given to the respective D.G. Sets. Once the set has run upto the rated speed
and has developed rated voltage it shall be automatically connected to the
respective emergency bus. Emergency loads shall then be switched on
automatically / manually in a predetermined sequence on this bus. When mains
power supply is restored, the D.G. set will be synchronised to it and shall be subsequently switched off
manually. Similarly, sometimes the D.G.
sets will be required to run in parallel with each other for facilitating
proper load distribution and uninterrupted load transfer.
The Switchgear has two bus sections i.e. bus section –
1 & bus section –2 coupled by 2 nos. bus-couplers, which are normally open.
Bus-section –1 & bus-section –2 are fed from normal main power through
breaker 1 & 2 respectively, which are normally closed. DG set I & DG
set II are connected to these two buses through breaker 4 & 5 respectively,
which close only when DG sets starts & develop rated voltage. Each DG set
shall operate & feed loads as specified later. Each DG set shall have
independent control panel, starting system, fuel oil system & there shall
be nothing common between these two sets. DG set shall have four modes of
operation selectable through switch located on AMF control panel. These modes
are a) Manual b) Auto c) Test & d) Stop / Isolated.
Manual mode :- In manual mode it shall be possible to
start & stop DG set through push buttons provided on AMF panel. After set
develops rated voltage, breaker 1 &
2 shall be tripped manually. Breaker 4 & 5 shall be closed to connect loads
to DG set, only if breaker 1 & 2 are tripped.
Auto mode:- In
auto mode, DG sets shall always be ready to start upon failure of normal power.
Readiness of sets shall be continuously monitored by sensing condition of
starting air compressor, availability of raw cooling water, availability of
fuel & same shall be displayed on annunciator as “DG set ready to start”.
In case of failure of power or under voltage on emergency bus section 1 and /
or bus section 2 respective normal breaker shall trip & respective DG set
shall start automatically. 3 phase, 4 wire supply line connection shall be
provided for use of DG set vender from bus section 1 & bus section 2. DG
vender shall use this supply for monitoring healthiness of voltage at emergency
bus section namely bus section 1 & bus section 2 & start DG set as & when required
using under voltage relay.
Test mode:- In
test mode, set shall start & stop on commands from AMF panel. No load will
be connected to DG set. Set shall trip after a preset time if not stopped
manually. Facility for dummy loading of DG sets shall exists without affecting
plant operation.
Stop / isolated
mode: - DG shall not start.
Time: The sets
shall be ready to feed loads in maximum of 10 sec from the instant of failure
of normal power supply, during auto mode of operation. Loads will be connected
to the generator sequentially either through PLC or relay based system.
Permissible
voltage dip during switching on loads to DG sets; It is required to start the
loads in sequence to limit transient voltage dip at bus section 1 & 2 to 15
% of 415 volts. This is necessary to ensure that remote control contactor picks
up reliably during auto start of DG sets. The supplier shall ensure TVD
(Transient voltage dip) at bus does not fall below above limit at any stage of
switching the loads.
Class III
switchgear - AMF panel DG set breakers CB4, CB5 and bus section breaker CB3
will be kept open and power supply from each incomer (CB1, CB2) will be confined to the respective
bus section. Provision exists for the selection of auto/manual mode of starting
the DG sets.
GENERATOR CONTROL UNIT (GCU)
GCU control panel provided with DG set shall have
following features:
a) Digital governing, voltage regulation,
synchronizing, load sharing and paralleling with main bus (Grid)
b) Protection of alternator against over
current protection
c) Analogue and digital AC output metering
d) Battery monitoring system to check weak
battery condition
e) Digital alarm and status message display
f) Genset engine monitoring system
g) Smart stealing control feature
h) Network capability
i)
IP 54
protection
j)
PC
compatibility
PROTECTION
The Diesel
Generator set shall be tripped under the following conditions:
i) 110 V D.C. control supply failure.
ii) Over speed of Diesel
Generator set as sensed by tachogenerator and mechanical Overspeed trip
mechanism.
iii) Low lube oil pressure after engine has
attained 90% speed.
iv) Excitation
failure due to tripping of field AC, CB or failure to build up voltage.
v) Fuel oil pressure low after 90% speed.
vi) Fire
detector device actuated.
vii)
Incomplete start after a preset time.
viii) Low level in fuel tank
ix) High lube oil
temperature.
x) High jacket water temperature sensed by
thermostat.
xi) Restricted earth fault protection.
xii) Reverse power protection.
xiii) Negative phase sequence protection
xiv) Over-current protection.
xv) DG earth fault.
xvi) Output overvoltage.
xvii) Emergency stop.
xviii) Output
under voltage.
xviv) Under
frequency.
Alarm and Indications
Local-Alarm on Diesel Control Panel
A window type annunciator panel shall be
supplied & mounted on each diesel control panel to give visual and audible
indication on occurrence of any one or more of the following troubles:
i) High ambient temperature in Diesel Room when the DG
set is operating.
ii) High jacket water temperature.
iv) Standby lube oil pump inoperative.
v) Lube oil pressure failure and trip of engine.
vi) Pre-lube oil pump inoperative.
vii) Lube oil tank level low.
ix) Starting air pressure low.
x) Air pressure very low (only two starts possible).
xi) Diesel Generator
Auxiliary trouble (combined annunciation for tripping of auxiliary motors).
xii) Fuel oil day tank level low.
xiii) Fuel oil day tank level high.
xiv) Generator winding temperature high.
xv) 110 V DC failure.
xvi)
Restricted earth fault protection.
xvii) Reverse
power protection.
xviii) Negative
phase sequence protection.
xix)
Over-current protection.
xx) Earth fault
protection.
xxi) Under
voltage protection.
xxii)
Over-voltage protection.
xxiii) Emergency stop.
xxiv) Starting
failure.
xxv) DG set Overspeed.
xxvi) Generator excitation failure.
xxvii) Fire detector device actuated.
xxviii) Generator bearing temperature high.
xxix) Engine bearing temperature high.
xxxi) Two spare
windows for use of purchaser.
Each
annunciator panel shall be provided with:
- A push
button for clearing the available alarm.(The visual annunciation will
persist).
- A push
button for clearing the visual annunciation after the fault has been cleared.
- A push
button for testing the illuminated transparencies.
After acknowledgement of one trouble by clearing the audible
alarm the alarm circuit shall be ready to operate for another fault.
All alarm devices shall be suitable for operation on
110 V/24 V DC.
Table-VIII
POWER CONTROL CENTRE (PCC)
PANELS
|
Sr. No.
|
Description
|
Specification
|
|
1.0
|
Standards
applicable
|
IS 13947,
IS-8623
|
|
3.0
|
General features of ACB, MCCB
|
|
|
3.1
|
Rated voltage
|
415V
|
|
3.2
|
Maximum voltage at which
breaker can operate continuously
|
690V
|
|
3.3
|
Rated frequency
|
50 Hz
|
|
3.4
|
Current rating
|
As per latest
single line diagrams (A2/RP.05.01.01/01/Rev-1 & A2/RP.05.02.01.2/01/Rev-1)
|
|
3.5
|
De-rating factor
for site conditions
|
Upto 500C,
no de-ration
|
|
3.6
|
ACB & MCCB
of PCC (NPCC & EPCC) panels with microprocessor based release
|
Confirmed
|
|
3.7
|
ACB & MCCB
of PCC (NPCC & EPCC)
|
Confirmed
|
|
3.8
|
Make (model) and
protections available in I/C ACB of PCC panels
|
Siemens
(ETU-45B); O/L, S/C, E/F, U/V, O/V, U/F, O/F, reverse power, current
unbalance, temp. monitoring , uP trip error, I-discrimination, all metering
& text display
|
|
3.9
|
Make (model) and
protections available in O/G ACB of PCC panels
|
Siemens
(ETU-45B); O/L, S/C, E/F, U/V, O/V, U/F, O/F, reverse power, current
unbalance, temp. monitoring , uP trip error, I-discrimination, all metering
& text display
|
|
3.10
|
ACB with
continuous duty trip coil
|
Confirmed
|
|
3.11
|
Make (model) and
protections available in MCCB of PCC panels
|
Siemens
(ETU-42); O/L, S/C (delayed &
instantaneous), E/F and current metering (In,Ir,Iy,Ie & Ig)
|
|
3.12
|
For ACB &
MCCB, Icu=Ics=65 kA
|
Confirmed
|
|
3.13
|
Insulation level
of the breaker (one minute dry withstand voltage, rms)
|
3 kV
|
|
3.14
|
Life of circuit
breaker
|
|
|
|
Electrical
|
20,000
operations for Size 1 frame (with maintenance)
15,000
operations for size 2 frame (with maintenance)
10,000
operations for size 3 frame (with maintenance)
|
|
|
Mechanical
|
20,000
operations for Size 1 frame (with maintenance)
15,000
operations for size 2 frame (with maintenance)
10,000
operations for size 3 frame (with maintenance)
|
|
3.15
|
MCCB/ SFU in
non-drawout module
|
≥ 630A
|
|
3.16
|
ACB provided in
all incomers and Bus-couplers of 4-pole type
|
Confirmed
|
|
3.17
|
Positive
isolation feature of MCCB
|
Confirmed for
< 630A MCCB.
|
|
3.18
|
MCCB with door
driving mechanism, shunt release, inter-phase barriers, pad-locking and
defeat facility
|
|
|
4.0
|
PCC (NPCC
& EPCC) Panels
|
|
|
4.1
|
Short time
withstand rating of the assembly (r.m.s.) for 1 sec.
|
65 kAmp
|
|
4.2
|
Mechanical
(momentary) withstand rating of assembly (peak)
|
136 kA
|
|
4.3
|
EPCC panel is
physically two separate panels connected together by cable
|
Confirmed
|
|
4.4
|
NPCC panel is a
physically single panel
|
Confirmed
|
|
4.5
|
Clearances
a) Between phases (live parts)
b) Between live parts and earth
c) Creepage path to earth
|
25 mm
19 mm
25 mm
|
|
4.6
|
Power frequency
withstand voltage of cubicle
a) power wiring
b) control wiring
|
3.0 kV rms for 1
sec
1.5 kV rms for 1
sec
|
|
4.7
|
MCC panels
designed for structural integrity based on NNS, IS-1893
|
Yes, confirmed
|
|
4.8
|
Material and
thickness of
(a) Main frame work
(b) Doors
(c) Side cover
(d) Partitioning sheet
(e) Gland plate
|
CRCA Sheet
2.5/2.0 mm
1.6 mm
1.6 mm
1.6 mm
3 mm
|
|
4.8
4.8.1
4.8.2
|
Internal wiring
Cross section
& material of Conductor for
-power wiring
-control wiring
-C.T. wires
Type &
voltage of insulation
|
Copper Wires
70 sq.mm (maxm)
4.0 sq.mm.(min.)
1.5 sq.mm.
2.5 sq.mm.
HRPVC wires,
1.1KV grade
|
|
4.9
|
Powder coating
after 7-tank treatment
|
Confirmed
|
|
4.10
|
Paint thickness
(epoxy based) in micron
|
50-60
|
|
4.11
|
Degree of
protection for NPCC panel
|
IP42 for feeders
having current rating> 2500A and IP52 for feeders having current rating ≤
2500A
|
|
4.12
|
Degree of
protection for EPCC panels
|
IP52
|
|
4.13
|
Provision of
Panel space heater with thermostat switch
|
Confirmed
|
|
4.14
|
Panel indoor
illumination with switch
|
Confirmed
|
|
4.15
|
One marshalling
box for each bus section provided
|
Confirmed
|
|
4.16
|
Operating height
of panels
|
350-1900 mm
|
|
4.17
|
Maximum length
of shipping section
|
2000 mm
|
|
4.18
|
Conformity to
SLDs
|
Yes
|
|
4.19
|
Earthing of
panel doors
|
By 4.0
sq.mm.braided copper wire
|
|
4.20
|
Shrouding as
required
|
Confirmed
|
|
4.21
|
Remote/ local
selector switch provided for ACB feeders
|
Confirmed
|
|
4.22
|
Auto/ Manual
selector switch provided for ACB feeders
|
Confirmed
|
|
4.23
|
Mechanical &
electrical interlocks provided between both incomers of NPCC panel
|
Confirmed/
Mechanical not possible as either Electrical or Mechanical interlock will
work.
|
|
4.24
|
Mechanical &
electrical interlocks provided between 2-class-IV incomers of EPCC panel
|
Confirmed/
Mechanical not possible as either Electrical or Mechanical interlock will
work.
|
|
4.25
|
Make of
components
|
As per specification
|
|
5.0
|
Communication ports for SCADA
connectivity
|
Communication
ports of ACB, shall be brought to the marshalling compartment of the panel
|
|
6.0
|
HRC Fuse
|
|
|
6.1
|
Make
|
Siemens
|
|
6.2
|
Type
|
3NA-3
|
|
6.3
|
Current rating
|
As per SLD
|
|
6.4
|
Interrupting capacity
|
120 kA
|
|
6.5
|
Fusing factor
|
1.5
|
|
7.0
|
Rotary Switch/ SFU/
Disconnecting switches
|
|
|
7.1
|
Make
|
Siemens
|
|
7.2
|
Type
|
3KM/3KL
|
|
7.3
|
Rated voltage
|
550 V at 50Hz.
|
|
7.4
|
Rated current
|
As per SLD
|
|
7.5
|
Rated making current
|
80 kA
|
|
8.0
|
Miniature Circuit Breaker (MCB)
|
|
|
8.1
|
Make
|
Siemens/MDS
|
|
8.2
|
Voltage rating
|
230V AC
|
|
8.3
|
Breaking capacity
|
10 kA
|
|
9.0
|
Control/ Selector switch
|
|
|
9.1
|
Make
|
Kaycee
|
|
9.2
|
Type
|
3R
|
|
10.0
|
Push Buttons
|
|
|
10.1
|
Make
|
Siemens
|
|
10.2
|
Type
|
3SB
|
|
10.3
|
No. of NO, NC
contacts
|
2NO + 2NC
|
|
10.4
|
Off push button
type
|
Mushroom/ Normal-Luminous
|
|
11.0
|
Bus bars
|
|
|
11.1
|
Material for PCC
panels
|
Copper
|
|
11.2
|
Type of
insulation
|
Heat shrinkable
Black PVC sleeve (Class-E) with colour coding at suitable location.
|
|
11.3
|
Temperature rise
of the bus-bars over the specified ambient temperature
|
500C
over 450C ambient
|
|
11.4
|
Current rating
of bus-bars (in house rating)
|
As per latest
SLD
|
|
12.0
|
Ground Bus
|
|
|
12.1
|
Material
|
Copper
|
|
12.2
|
Cross section
|
40x10 sqmm.
|
|
13.0
|
Control Bus (Separate AC &
DC control bus)
|
|
|
13.1
|
Physically
separate control bus provided
|
Yes, confirmed
|
|
13.2
|
Material
|
Copper
|
|
13.3
|
Cross-section
|
5x5 sq.mm.
|
|
13.4
|
Control bus
supply through double pole MCB
|
Provided
|
|
14.0
|
Protective
electromagnetic relays on both I/Cs of NPCC Panel
|
|
|
14.1
|
O/C, UEF, REF,
UVR, OVR
|
Confirmed
|
|
14.2
|
C.T provided for
REF relay
|
4000/2000/5A,
Class-PS
|
|
14.3
|
C.T provided for
OC, UEF relay
|
4000/2000/5A,
Class-10P10, 15VA
|
|
14.4
|
PT provided for
UVR, OVR
|
2 Nos.415/ 110V,
25VA, class-1
|
|
15.0
|
Protective
electromagnetic relays on I/Cs of EPCC Panel
|
|
|
15.1
|
Protective electromagnetic
relays (OC, UEF, REF, UVR, OVR & Reverse power relay) provided on DG I/Cs
of EPCC panel
|
Confirmed
|
|
15.2
|
Protective
electromagnetic relays (OC, UEF, UVR) provided on Class-IV I/Cs of EPCC panel
|
Confirmed
|
|
15.3
|
C.T provided for
OC, UEF relay on class-IV incomers
|
2500/1000/5A,
Class-10P10, 10VA
|
|
15.4
|
PT provided for
UVR, OVR on class-IV & DG I/Cs
|
2 Nos.415/ 110V,
10VA, class-1
|
|
15.5
|
C.T provided for
OC, UEF relay on DG incomers
|
1600/800/5A,
Class-10P10, 10VA
|
|
15.6
|
C.T provided for
REF relay on DG incomers
|
1600/800/1A,
Class-PS
|
|
16.0
|
Metering, Indication &
Terminal Blocks
|
|
|
16.1
|
Load manager
with 12-parameter display (displays max.demand also) provided
|
Confirmed
(Enercon make, EM3480)
|
|
16.2
|
Window
annunciators provided on I/Cs of PCC panels
|
Confirmed
|
|
16.3
|
Meters provided
on all incomer feeders of NPCC & EPCC panels
|
Analog type
Voltmeter with selector switch, Ammeter with selector switch and Frequency
meter
|
|
16.4
|
Meters provided
on PCC (NPCC& EPCC) O/G feeders
|
As per SLD
|
|
16.5
|
Auto changeover
switch provided between I/C and B/C feeder of PCC panels
|
Confirmed
|
|
16.6
|
For
microprocessor based ACB, HMI with suitable softwares and hardwares shall be
provided
|
Confirmed
|
|
16.7
|
Potential
indicating lamps (LED based) for all incomers through control fuse
|
Confirmed
|
|
16.8
|
ON indicating
lamps for all outgoing MCCB feeders
|
Confirmed
|
|
16.9
|
Class-1 CT
(Class-E insulation) for metering purpose
|
Confirmed
|
|
16.9
|
Class-1 VT
(Class-E insulation) for metering purpose
|
Confirmed
|
|
16.10
|
10A DC contactor
with 415V coil connected in NPCC & EPCC panel
|
Confirmed
|
|
16.11
|
20% spare
terminals in cable alley
|
Provided
|
|
16.12
|
20% spare
terminals as contacts
|
Provided
|
|
17.0
|
Cable/ Bus-duct entry to PCC
Panel
|
|
|
17.1
|
NPCC Panel
|
|
|
17.1.1
|
Top bus-duct
(compact sandwich) entry for both incomers
|
Confirmed
|
|
17.1.2
|
Outgoing feeder
Nos.F6 & F24 shall have bottom bus-duct (compact sandwich) entry
|
Confirmed
|
|
17.1.3
|
All other
outgoing feeders with top cable entry
|
Confirmed
|
|
17.2
|
EPCC Panel
|
|
|
17.2.1
|
Top bus-duct
(compact sandwich) entry for all 4-incomers
|
Confirmed
|
|
17.2.2
|
All outgoing
feeders with bottom cable entry
|
Confirmed
|
|
18.0
|
Others
|
|
|
18.1
|
Auxiliary power
supply (24V d.c.) shall be provided for PCC panels through a power pack . The
230V input to the power pack will be from the incomer feeder.
|
Confirmed.
|
|
18.2
|
Cranking handle
is an integral part of ACB
|
Confirmed
|
The blog provides information on Technical Specifications of Powerica Diesel Engine and Generators. To get Dealers of Powerica DG set on Rental Basis, visit https://vidyutbazar.com/bazardirectory/powerica-rentals-dg/
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