the motor or the driven equipment. Insulation shall be Class B or Class F,
with Class B temperature rise in accordance with NEMA MG 1. Enclosures
shall be fabricated of steel. Horizontal motors shall be mounted on a
common baseplate with the driven equipment. Manual reset thermal overload
protection shall be furnished integral to each motor. Enclosures shall be
totally enclosed nonventilated.
2.10.3.2
Motors Rated 1/2 Through 149 kW 3/4 Through 199 H.P.
**************************************************************************
NOTE: The efficiency of each motor shall not be
less than that indicated in the following table:
Efficiency
________________________________________________________
Nameplate
3600 rpm
1800 rpm
1200 rpm
Kilowatt
Nominal Minimum
Nominal Minimum
Nominal Minimum
0.746
81.5
78.5
84.0
81.5
78.5
75.5
1.21
81.5
78.5
84.0
81.5
84.0
81.5
1.49
84.0
81.5
84.0
81.5
86.5
84.0
2.24
86.5
84.0
88.5
86.5
88.5
86.5
3.73
88.5
86.5
90.2
88.5
88.5
86.5
5.60
88.5
86.5
90.2
88.5
88.5
86.5
7.46
88.5
86.5
90.2
88.5
90.2
88.5
11.19
90.2
88.5
91.7
90.2
90.2
88.5
14.92
91.7
90.2
91.7
90.2
91.7
90.2
18.65
91.7
90.2
93.0
91.7
91.7
90.2
22.38
91.7
90.2
93.0
91.7
91.7
90.2
29.84
91.7
90.2
93.0
91.7
93.0
91.7
37.30
91.7
90.2
94.1
93.0
93.0
91.7
44.76
93.0
91.7
94.1
93.0
93.0
91.7
55.95
94.1
93.0
94.1
93.0
94.1
93.0
74.60
94.1
93.0
95.0
94.1
94.1
93.0
93.25
94.1
93.0
95.0
94.1
94.1
93.0
111.90
94.1
93.0
95.0
94.1
95.0
94.1
Efficiency
________________________________________________________
Nameplate
3600 rpm
1800 rpm
1200 rpm
Nominal Minimum
Nominal Minimum
Nominal Minimum
1
81.5
78.5
84.0
81.5
78.5
75.5
1.5
81.5
78.5
84.0
81.5
84.0
81.5
2
84.0
81.5
84.0
81.5
86.5
84.0
3
86.5
84.0
88.5
86.5
88.5
86.5
5
88.5
86.5
90.2
88.5
88.5
86.5
7.5
88.5
86.5
90.2
88.5
88.5
86.5
10
88.5
86.5
90.2
88.5
90.2
88.5
15
90.2
88.5
91.7
90.2
90.2
88.5
20
91.7
90.2
91.7
90.2
91.7
90.2
25
91.7
90.2
93.0
91.7
91.7
90.2
30
91.7
90.2
93.0
91.7
91.7
90.2
40
91.7
90.2
93.0
91.7
93.0
91.7
50
91.7
90.2
94.1
93.0
93.0
91.7
60
93.0
91.7
94.1
93.0
93.0
91.7
75
94.1
93.0
94.1
93.0
94.1
93.0
100
94.1
93.0
95.0
94.1
94.1
93.0
125
94.1
93.0
95.0
94.1
94.1
93.0
SECTION 15864N
Page 65