Sumitomo Drive Technologies Cyclo 6000 - 6.1 Measuring Insulation Resistance; 6.2 Motor Protection; 6.3 Motor Wiring Method

T
7
T
4
T
9
T
7
T
4
T
9
T
6
T
8
T
5
T
6
T
8
T
5
T
1
T
2
T
3
T
1
T
2
T
3
T
4
T
5
T
6
T
4
T
5
T
6
T
7
T
8
T
9
T
7
T
8
T
9
T
1
T
2
T
3
T
1
T
2
T
3
6. MOTOR WIRING
Table 6-1: Insulation Resistance
Figure 6-2: Three-Phase WYE Connection Motor
Figure 6-4: Three-Phase Motor, 575V, 60Hz
Figure 6-3: Three-Phase DELTA connection Motor
Figure 6-5: Single-Phase Motor, 115/230V, 60Hz
Table 6-2: Typical 230/460V, Three-Phase Wiring
Conguration by Motor Type
•
Use a molded case circuit breaker for protection against short circuit.
•
Use an overload protection device that protects the unit against voltage surges.
•
For additional information, please refer to the
motor nameplate.
•
Due to changes in design features, the wiring
diagrams shown in this manual may not always
agree with that on the motor.
Note: In such cases, wiring diagram found inside
the conduit box of the motor should be used.
6.2 Motor Protection
6.3 Motor Wiring Method
1
2
T
1
T
2
T
3
T
3
T
8
T
2
T
3
T
8
T
2
T
1
T
4
T
5
T
1
T
4
T
5
6. MOTOR WIRING
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Cyclo® 6000 Operating and Maintenance Manual
Cyclo® 6000 Cyclo® 6000
Cyclo® 6000 Operating and Maintenance Manual
24 25
Motor Voltage Megohmmeter Voltage
Insulation Resistance
Electric motors of voltage no more than 600V 500V Minimum 1 M(Ω)
When measuring insulation resistance, disconnect the motor from the control panel. Check the motor separately.
A drop in resistance may be attributed to poor insulation. In such case, do not turn on the power. Contact the nearest
Sumitomo representative, distributor, or sales oce.
Based on motor power, determine if motor is WYE or DELTA type
(see Table 6-2).
Line 575V 60Hz Line 115V 60Hz
Line 460V 60Hz Line 460V 60HzLine 200/230 V 60Hz Line 200/230 V 60Hz
Line 230V 60Hz
Wire the motor to the power source using the correct wiring
type as shown on Figures 6-2 to 6-5.
6.1 Measuring Insulation Resistance
•
Never touch the terminals when measuring insulation resistance otherwise electrical
shock may occur.
•
Measure the insulation resistance before wiring. Insulation resistance varies according to
the motor voltage, insulation type, coil temperature, humidity, length of operation, test
electrication time, etc.
•
Under most conditions, the insulation resistance exceeds the value shown in this table:
U.S. Standard Motors
Motor HP
(kW) x P
Standard AF-Motor EP.NA-Motor
Non CSA CSA Non CSA CSA UL/CSA/CE
1/8 (0.1) x 4
WYE WYE
WYE
WYE
1/4 (0.2) x 4
1/3 (0.25) x 4
1/2 (0.4) x 4
3/4 (0.55) x 4
1 (0.75) x 4
WYE
1.5 (1.1) x 4
2 (1.5) x 4
3 (2.2) x 4
5 (3.7) x 4
DELTA
7.5 (5.5) x 4
DELTA
DELTA DELTA
DELTA
10 (7.5) x 4
15 (11) x 4
20 (15) x 4
25 (18.5) x 4
30 (22) x 4
40 (30) x 4
50 (37) x 4
60 (60) x 4
- -
75 (56) x 4