14
ELECTRICAL DATA
TO DETECT OPEN AND SHORT CIRCUITS IN ELECRICAL COMPONENTS
Open circuits in the coils of electrical components may be detected by isolating the coil and checking for continuity with an
ohmmeter or with the unit in series with a light or bell circuit.
Shorted turns are indicated by a current draw substantially above normal (connect ammeter in series with suspected
element and impose normal voltage) or D.C. resistance substantially below normal. The current method is recommend for
coils with very low D.C. resistance.
Motor current draw in the stator should be measured with the rotor in place and running. Brake, relay and contactor coil
current should be measured with the core iron in operating position.
Table 7. Electrical Data For Hoist Components
Transformer
Voltage
Leads
*D.C.
Resistance
(Ohms)
230/460 To 115
X1 To X2
24.6
H1 To H2
106
H3 To H4
130
.
220/380 To 48
X1 To X2
4.0
H1 To H2
106
H3 To H4
130
.220/415 To 24
X1 To X2
1.1
H1 To H2
106
H3 To H4
130
Models
AC Brake
Coil
Voltage
Nominal
Current
(Amps)
*D.C.
Resistance
(Ohms)
B, C and F
115
0.51
5.8
B, C and F
**230
0.17
23.1
J, L and R
115
1.25
1.1
J, L and R
**230
0.46
4.6
LL, RR
**230
0.17
2.2
Models
Contactor
Coil Voltage
Nominal
Current
(Amps)
*D.C.
Resistance
(Ohms)
B thru RR
115
0.04
29.75
48
0.09
56.3
24
0.19
14.9
Models/
Cap.
Volts-
Phase-
Hertz
H.P.
(kW)
Full Load
Current
(Amps)
Motor
Leads
*D.C.
Resist.
(Ohms)
J - 1/2 Ton
(500 kg)
L - 1 Ton
(1000 kg)
R - 2 Ton
(2000 kg)
115/1-60
1
(.74)
9.8
1 to 2
1.1
9.8
3 to 4
110/1-50
11.6
3 to 4
1.1
11.6
5 to 8
1.3
J - 1/2 Ton
(500 kg)
L - 1 Ton
(1000 kg)
R - 2 Ton
(2000 kg)
230/460-3-60
1
(.74)
3.0/1.5
1 to 4
4.7
2 to 5
220/380-3-50
3.6/1.8
3 to 6
8 to 9
9.4
220/415-3-50
3.6/1.8
8 to 7
9 to 7
LL - 1 Ton
(1000kg)
RR - 2 Ton
(2000kg)
)
230/460-3-60
2
(1.5)
5.8/2.9
1 to 4
2.2
2 to 5
220/380-3-50
6.4/3.3
3 to 6
8 to 9
9.4
220/380-3-50
6.4/3.3
8 to 7
9 to 7
MOTOR DATA
*Resistance Values listed are nominal and they may vary
slightly from component to component.
**On dual voltage units (230/460-3-60, 220/380-3-50 and
220/415-3-50), brake coils operate on 230 (220) volts.
Models/
Cap.
Volts-
Phase-
Hertz
H.P.
(kW
)
Full Load
Current
(Amps)
Motor
Leads
*D.C.
Resist.
(Ohms)
B -1/4 Ton
(250 kg)
115/230-1-60
1/4
(.19)
4.6/2.3
1 to 2
4.3
3 to 4
4.3
5 to 8
4.9
110/220-1-50
3.2/1.6
1 to 2
7.2
3 to 4
5 to 8
5.8
230/460-3-60
1.4/.7
1 to 4
14.8
2 to 5
220/380-3-50
1.4/.7
3 to 6
8 to 9
29.5
220/415-3-50
1.4/.7
8 to 7
9 to 7
C -1/4 Ton
(250 kg)
F - 1/2 Ton
(500 kg)
115/230-1-60
1/2
(.37)
7.2/3.6
1 to 2
1.9
3 to 4
5 to 8
3.6
110/220-1-50
6.4/3.2
1 to 2
2.7
3 to 4
5 to 8
3.5
230/460-3-60
1.8/.9
1 to 4
7.8
2 to 5
220/380-3-50
2.1/1.0
3 to 6
8 to 9
15.6
220/415-3-50
2.1/1.0
8 to 7
9 to 7
Models
DC Brake
Coil
Voltage
Nominal
Current
(Amps)
*D.C.
Resistance
(Ohms)
B, C and F
103
0.243
424.4
205
0.122
1681
255
0.098
2601
J, L and R
103
0.311
331.5
J, L, LL, R and RR
205
0.161
1273
255
0.118
2167
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