Download Terms and Abbreviations

Terms and Abbreviations
A – Ampere – unit of measure for electrical current - (schematic abbreviations)
A1 - Schematic abbreviation - Axis Box 1 - (schematic abbreviations)
A2 - Schematic abbreviation - Axis Box 2 - (schematic abbreviations)
A3 - Schematic abbreviation - Axis Box 3 - (schematic abbreviations)
AI - Analog Input
Analog signal - A signal that attains an infinite number of different amplitude levels.
AO - Analog Output
Apparent Power - The power value obtained by multiplying the current by the
voltage (P = I X E).
9. Axial dimension - This term is used for the measurement of the coupler distance
during the generator coupler alignment procedure.
10. CB - Circuit breaker - provides power to individual circuits – also circuit protection.
11. Contactor – Is a signal actuated switch used for supplying of higher three phase
voltages, usually a motor, heater etc…
12. CT - Current Transformer – used by measuring circuits in the main controller and
SEG converter.
13. DE – Drive end
14. DI - Digital Input, high or low state (with the Bachmann system - 0 or 24Vdc)
15. Digital signal - A signal having an integral number of discrete levels or values. (1’s
and 0’s) (24Vdc or 0Vdc).
16. DO - Digital Output – Bachmann M1 system uses outputs of 0 or 24Vdc
17. E - Voltage in Volts – U is voltage on 1.5 Schematics
18. EOC – Electrical to Optical Converter- used for converting electrical signals to light
signals
19. E-Stop - Emergency stop
20. Feedback signal – signal sent back to the processor indicating the status of a
component (usually 0 or 24Vdc .
21. GE – Schematic abbreviation – Generator
22. Grid voltage – See Utility
23. GT – Schematic abbreviation - Gearbox
24. I - Current in Amperes – L is current on 1.5 Schematics
25. Inductive sensor/proximity switch - Senses changes in the magnetic inductance,
outputs pulses
26. K – kilo = 1000
27. LS – Schematic abbreviation - Control Cabinet (Hub)
28. LVMD - Low Voltage Main Distribution (ABB Cabinet)
29. mA - mili amp – unit of measure for electrical current
1.
2.
3.
4.
5.
6.
7.
8.
30. MFR 2U1 - Multifunction relay Mains Supervision/fault relay/current measuring.
31. Motherboard – (backplane) The interface between circuit boards or control
modules.
32. Motor protection /thermal overload – operates with heat, contacts open at a
desired current setting – used for motor and circuit protection
33. Nacelle – is the whole WTG as a unit with enclosures.
34. Nacelle Bottom – bottom enclosure
35. Nacelle Top – top enclosure
36. NC - Normally Closed – indicates the status of a relay or switch contact
37. NDE – Non-Drive End
38. NO - Normally open – indicates the status of a relay or switch contact
39. NS – Schematic abbreviation - Low Voltage Main Distribution Cabinet
40. PF- Power Factor
41. Ph - Phase
42. PLC - Program Logic Control
43. Power factor - In an alternating current circuit, the ratio of true power to apparent
power – it is equal to the cosine of the phase angle, expressed in either decimal or
percentage
44. Primary - The input winding of a transformer
45. Program Logic Controller (PLC) – Control system that is programmable.
46. Proximity Switch – Inductive Sensor used for counting Yaw position, Rotor rpm,
and Generator rpm.
47. PT 100 - Resistive thermometer, sensor (100 Ohms at 0ºC) – used for Temperature
Supervision
48. Reactive Current – the component of alternating current that is not in phase with
the voltage
49. Reactive Power - is the product of kilovolts and amperes in a reactive component of
a circuit.
50. Relay – A signal actuated switching device.
51. rpm - Revolutions Per Minute
52. Secondary - The output winding of a transformer
53. SR – Schematic abbreviation – Slip ring
54. SS – Schematic abbreviation - Main Controller Cabinet
55. SUB – Service Update Bulletin 56. Synchronization - The coincidence of one process or operation to another.
57. TB – Schematic abbreviation - Top Box or Terminal Block
58. Thermal Overload - Motor protection – provides adjustable circuit and motor
protection, manual re-settable.
59. Transformer - A device using electromagnetic induction to transfer electrical
energy from one circuit to another.
60. True Power – in an ac circuit, the power actually dissipated in the resistive
component, the reactive component consumes no power
61. Turns ratio - The ratio of the number of turns in the primary to the number of turns
in the secondary
62. ua - micro amp
63. UPS – Un-interruptable Power supply provides power after grid loss, used for
supplying power to various circuits in case of grid loss. Indicated as USV in 1.5
schematics.
64. Utility – power supplied from the local utility company
65. VisuPro – is the program that allows communication between Bachmann control
system and the turbine PC for viewing/recording data and turbine control (SCADA)
66. WTG – Wind Turbine Generator
67. YC Coil – Closing Coil for the Main Switch (CB1)
68. YU Coil – Under voltage or low voltage coil for the Main Switch (CB1)
Figure 3
Reading Schematics
Sheets affected
Description of change
Current Revision 1.02
Section
Date of
drawing
Latest Revision or current
revision and date of revision
Figure 4
Section
Designation
Sheet 0
Reading Schematics
Component
Map Location
A2
Component
Identification
Map Scale
Maps to sheet 4 of the
same section (main
cabinet) map location
1A
Voltage this wire is
supplying
Map Scale
Component
Identification
Wire
designation
Component
Map Location
C2
Pin Number
Terminal Block
X5
This wire maps to the LVMD
(NS) section, Sheet 4, map
location 3E
Section in
Schematics
Fig. 5
SS identifier for Main
Control Cabinet
Sheet
Number
Reading Schematics
Supply line
Digital output
supply
Comes from
sheet 13 map
location 8A
Supply line continues on to
sheet 19-map location 1A
Module 18A1
A1 is the positive terminal of
the energizing coil
Relay 18K6
energizing coil
Digital output
24Vdc energizes
relay 18K6
Section
Designation (SS)
Light emitting diode
A2 is the negative terminal of
the energizing coil
Relay description
Relay contact configuration
Sheet 7 map location 3B
Sheet 18
Map location number
Fig. 6
Reading Schematics
Power Distribution
Transformer
Fuses
Thermostat
Circuit
Breaker
A dot indicates
connecting lines
Switch
Fan motor
Terminal
Block 2
Pin numbers of
terminal block 2
Mapped position
from sheet 3 of main
controller (SS)
Thermostat
Fig. 7
Reading Schematics
Uninterruptable power
supply line
Dotted box indicates
external switch
Power supply
120 to 24
Contact
Terminal block X25
Contact 33/34
Contact 23/24 of
relay 12K2
Contact 23/24
X20 pin 6
Terminal
block pin 5
Terminal block X20
Maps to slipring section
sheet 1 location 3C
Fig. 8
Top Box section
designation (TB)
Reading Schematics
Uninterruptable power
supply line
Dotted box indicates
external switch
Power supply
120 to 24
Contact
Terminal block X25
Contact 33/34
Contact 23/24 of
relay 12K2
Contact 23/24
X20 pin 6
Terminal
block pin 5
Terminal block X20
Maps to slipring section
sheet 1 location 3C
Fig. 8
Top Box section
designation (TB)
Reading Schematics
24V power supply
Component
label number
Feedback - In series with other
Overvoltage protection circuits
Part of motor
protection circuit
Contact 13/14 of
relay 12K2
Solenoid Valve
Relays
Figure 10
Reading Schematics
Digital output Description
Digital output 11.19
Contact 33/34 of 12K2
Relay 26K2
Figure 11
Reading Schematics
Analog Inputs
26A1
26A2
Isolation
Amplifier
Terminal Block
in SEG Converter
Figure 12
Reading Schematics
PT 100
X17
X17
Terminal
Block
Figure 13
X17
Reading Schematics
PT 100 Temperature Sensors
Filter Switch
Figure 14
Reading Schematics
Motor Protection Circuit
Overspeed Guard
Relay
Contact
Internal Relays
Resistor
Switch
Contact
Capacitor
Inductive Sensor
To Main Cabinet
To Gearbox
Fig. 15
Relay
Energizing Coil
Reading Schematics
Circuit Breaker
Feedback Contacts
Digital Inputs
Relay Description
Contact
Configurations
Digital Input
Descriptions
Fig. 16
Reading Schematics
Power from Uninterruptable
Power Supply
Power Supply
120Vac to 24Vdc
24Vdc
Supply Line
Overvoltage
Protection
Contact
Configuration
Switch
Contacts
Map Location
Ground Reference
Fig. 17
Reading Schematics
Generator Position Encoder
Mounted to Rear of
Generator
Terminal Block in SEG
Converter
Fig. 18
Reading Schematics
Inductive Sensor
Generator RPM
RC Time Constant
16A1 Counter
Module
Fig. 19
Reading Schematics
Test Terminal block for isolating a
single phase from the MFR
Thermal
Overload
CT Inputs
Mains Voltage
Fault Relays
MFR 13 (Multifunction
Relay) Grid Monitoring
Non Can Bus
0-20mA Outputs
Fig. 20
To Analog Inputs
Reading Schematics
CanBuss
Connections
Fig. 20A
Reading Schematics
CanBuss Communications
Fig. 20B
Reading Schematics
Thermistor Switches
Feedback to 17A1 DI 11.3 Yaw
Motor Temperature PTC
Temperature
Sensor
Fig. 21
Reading Schematics
Power Supply
120Vac to 24Vdc
UNIOP interface on Top Box door
Used for Wind Speed and Automatic Tracking of Wind
To brush wear switches in
slip ring compartment of
generator
Supply voltage
Supply voltage
Controls Yaw
Fig. 22
Reading Schematics
Inductive Sensors (proximity switch)
Counts Yaw Position
Fig. 23
Reading Schematics
Uninterruptable Power
Supply (UPS) or (USV)
120Vac Supply Line
Uninterruptable Power
Supply Line
UPS
Feedback Signals
Switch
120Vac Power Receptacles
Fig. 24