3. 500 KVA alternator rotates on rated speed and
maintain 750V phase to phase voltage
These three phase supply is connected to 800
A ACB(air circuit breaker).
Before ACB 100 VA,750v/415v voltage
transformer is used for control and mesuring.
Neutral from alternator is connected through
BCNA(bus coupler neutral)
contactor),FNA(Feeder neutral contactor)
Feeder contactor k-01 and k-02 are connected to
incoming cable from ACB.
4. Contactor k-01 and k-02 are interlocked to each
other for safety purpose
One Bus coupler contactor k-03 is used between
both feeder
One safety loop wire size 2.5 sq mm is used for
entire coaches to both power car via limit
switch . Without safety loop ok feeder contactor
can’t be operated.
IF safety loop is ok then feeder contactor(k-01,k-
02) and power car working contactor (k-04 ,06)
can be operate and feeder can be charged.
6. Regulated Battery Charger 415 V/ 110 V DC
constant current constant voltage
Emergency Battery Charger 230 V/ 110 V DC
LHB RMPU 7 ton capacity
60 kVA transformer 750/415 V – 3 nos
2 nos 60KVA transformer for power car radiator
and one 60 KVA transformer for power car
coach load.
Two transformer under frame and one transformer
inside power car coach(for coach load).
7. • Switch Board Cabinet consists Power
distribution and Ac control panel
• DG set control panel
• Air Circuit Breaker 800 A for alternator output
• Diesel Engines are monitored and control
through ECBG (Electronic Control & Governor
Control)
8. •OUT PUT VOLTAGE : 750 V
•ALTERNATOR CAPACITY: 500KVA
•POWER FACTOR :0.8
•FREQUENCY :50 Hz +/- 3%
•IT IS SELF EXCITED ,SELF REGULATED,SELF
VENTILATED
•IT SHOULD BE CAPABLE OF CATERING 30 % OF
UNBALANCED LOAD
•STATOR INSULATION CLASS-F
•ROTOR INSULATION CLASS-H
ALTERNATOR SPECIFICATION
9. •Class H insulation consists of materials such as
silicone elastomeric and combinations of materials
such as mica, glass fiber, asbestos etc., with suitable
bonding, impregnating or coating substances such as
appropriate silicon resins.(temp-180 degree
centigrade)
•Class-F insulation consists of materials or
combinations of materials such as mica, glass fibre,
asbestos etc. materials possessing a degree of
thermal stability allowing them to be operated at
temperature 25 centigrade degree higher than class-
B materials.(155 Degree centigrade)
CLASS-H INSULATION AND CLASS-F INSULATION
10. •The alternator use self ventilated brushless designed
with voltage regulation of dual type i.e both electrical
and electronic
• electrical control through compound transformer or
magnetic amplifier and
•Electronic regulation through solid state automatic
voltage control and sensing from all the three phases.
•The combined regulation is 2.5% approximately.
DIESEL ALTERNATOR SPECIFICATION
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24. Water temperature gauge with cutout
Lub oil pressure gauge with cutout
Over Speed governor
25.
26.
27.
28.
29.
30. Alternator Earth leakage relay
Under Voltage Relay
Over load relay
52. HOG compliant
On the non-vestibule end of power car, 2 nos of
500 Amps Z-S couplers are provided fro
extending hotel supply from Locomotive
One 13 pin UIC (Universal Inter vehicle
coupler) is provided for controlling Hotel load
converter in the Locomotive
2 nos 290 Ah starter battery sets are provided.
Charging of these batteries thro’ the Battery
charger 230 V /24 V with a change over switch.
53. Fuel flow meter has been provided for
measuring fuel consumption
2 nos of 630 A main contactors introduced for
isolating Hotel load supply from Locomotives
54. Pollution free and cheaper power from OHE as compared
to EOG system
Higher reliability as compared to SG/EOG system due to
reduced number of generating equipments
No additional irritating noise or smoke as power is taken
from Electric/Diesel locomotive
Low maintenance requirement
Requirement of operator for stand by DA set only
Reduced dead weight as compared to SG & EOG system
HOG type AC coaches can be used in EOG type trains
Suitable for diesel as well as electric traction
Best suited for LHB type coaches with higher speed
potential
56. Highwater temperature
The high water temperature switch is mounted
on the engine an
dsensesthetemperatureofwaterinthecoolingjack
etoftheengine.
•Thedeviceissetat97°Cforputtingofftheengine.
•OncetheICHTcloses,watertemperatureindicati
oncomesonandthecommonfaultrelayisenergize
d.