ROTATING CHECKS
WITH EXCITATION - AT NO LOAD CONDITIONS
•
Verification of the bearings temperature (
refer to chapter 2.5.1 or 2.6.2
)
°C ______________
•
In manual mode :
Voltage adjustment
___________________________________
Excitation current check
___________________________________
•
In automatic mode :
Voltage Setting (referring to nominal voltage)
________________________
Excitation current check
________________________
•
Parallel coupling : Adjustment to parallel operation (3F)
________________________
A FAULTY SYNCHRONISING CAN BE THE ORIGIN OF DAMAGES (HIGH MECHANICAL OVER-
TORQUE)
•
Maximum acceptable values for synchronisation to the mains :
Maximum frequency shift
0,1 Hz
_________________________
Maximum Phase offset
10 °
_________________________
Maximum voltage (P.N.) difference
5% of Un
_________________________
Control / Adjustment of the site safety Parameters
•
Over-voltage,
_____________________________________________________________
•
Over-current (by short-circuit on stator in separate excitation mode),
_________________________
•
Negative sequence relay,
_____________________________________________________________
•
Over-speed,
_____________________________________________________________
•
Differential protection (in static conditions),
_____________________________________
•
Other protective device.
_____________________________________________________________
CHECK THAT ALL SAFETY EQUIPMENT OPERATES CORRECTLY
WITH EXCITATION - LOADED
Take the load gradually from 0 to 100% in steps of 25%
Record for each step (
refer to Section 1)
:
•
Electrical output (KW)
•
POWER FACTOR
•
Voltage (V)
•
Current (A)
•
Excitation Current / voltage
•
Winding temperature
Time
KW
pf
Volts
I (A)
I (ex)
U1 (°C)
V1 (°C)
W1 (°C)
•
Bearings temperature (if thrust sensor available, please record its value)
Time
DE Thrust (°C)
DE Radial (°C)
NDE Radial (°C)
•
Oil inlet temperature (if applicable ;
refer to Section 1
)
•
Oil flows (if applicable ;
refer to Section 1
)
•
Bearings vibrations (mm/s) (
refer to chapter 2.1.3.4
)
DE-V
DE-H
DE-A
DE-V
DE-H
DE-A
All works must be carried out by a qualified and authorized person.
Electric Power Generation
Installation and maintenance
5654
en - 2017.
10
/
a
LSA 5
2
.2
MHV
Industrial Range Alternators
- 4 pole
20
