Name:______________________________
Transformers Vocabulary Worksheet
Please use your texts and other resources to define
the following terms. Your definitions should be as
detailed as possible.
1. ANSI Cooling Class “AA”
2. Air cooled
3. Ambient temperature
4. Ampacity
5. ANSI
6. Attenuation
7. Autotransformer
8. Banked
9. BIL
10. BTU
11. Buck-boost Transformers
12. Bushing
13. Cast-coil Transformer
14. Center tap
15. Copper (or Load) Losses
16. Core-Form Construction
17. Current Transformer
18. Common mode
19. Compensated transformer
20. Conductor losses
21. Continuous duty rating
22. Core losses
23. Decibel
24. Delta connection
25. Delta Wye
26. Dielectric tests
27. Distribution Transformers
28. Drip-proof Enclosure
29. Dry-type transformer
30. Eddy currents
31. Efficiency
32. Electrostatic shield
33. Encapsulated transformer
34. Enclosure
35. Excitation current
36. ANSI cooling class “FA”
37. Fan Cooled
38. FCAN Taps
39. FCBN Taps
40. ANSI cooling class “FOA”
41. ANSI cooling class “FOW”
42. Frequency
43. Ground
44. Ground Strap
45. Harmonics
46. High voltage windings
47. HMT Transformer
48. Hi-pot
49. Hottest-spot temperature
50. Hysteresis
51. Impedance
52. Indoor transformer
53. Inductance
54. Inrush current
55. Insulating transformer
56. Insulation
57. Insulation materials
58. Isolation transformer
59. K-factor
60. kVA
61. Lamination
62. Linear load
63. Liquid-immersed Transformer
64. Live part
65. Load
66. Low voltage winding
67. Moisture-resistant Enclosure
68. Natural-draft or Natural-draft Ventilated
69. Noise level
70. Nonlinear load
71. Non-ventilated transformer
72. No load losses
73. Overload capability
74. ANSI cooling class “OA”
75. Parallel Operation
76. Phase
77. Polarity test
78. Primary taps
79. Primary voltage
80. Primary Winding
81. Poly-phase
82. Potential (Voltage) Transformer
83. Power factor
84. Primary Taps
85. Rating
86. Ratio test
87. Reactance
88. Reactor
89. Regulation
90. Sealed Transformer
91. Secondary Taps
92. Secondary Winding
93. Secondary Voltage Rating
94. Scott T connection
95. Series/multiple winding
96. Shell-type Construction
97. Short circuit
98. Sound levels
99. Star connection
100. Step-down transformer
101. Step-up transformer
102. Tap
103. Temperature class
104. Temperature rise
105. Total losses
106. Transformer
107. Transverse mode
108. Turns ratio
109. Universal taps
110. Volt-amperes
111. Voltage Ratio
112. Voltage Regulation
113. Winding Losses
114. Winding Voltage Rating
115. Wye connection