18
Technical Data
MOTOR INSULATION RESISTANCE READINGS
Normal Ohm/Megohm readings, ALL motors, between all leads and ground
Condition of Motor and Leads
OHM Value
Megohm Value
New motor, without power cable
20,000,000 (or more)
20.0
Used motor, which can be reinstalled in well
10,000,000 (or more)
10.0
Motor in well – Readings are power cable plus motor
New motor
2,000,000 (or more)
2.0
Motor in reasonably good condition
500,000 to 2,000,000
0.5 – 2.0
Motor which may be damaged or have
damaged power cable
20,000 to 500,000
0.02 – 0.5
Do not pull motor for these reasons
Motor definitely damaged or with
damaged power cable
10,000 to 20,000
0.01 – 0.02
Pull motor and repair
Failed motor or power cable
Pull motor and repair
Less than 10,000
0 – 0.01
To perform insulation resistance test, open breaker and
disconnect all leads from QD control box or pressure switch.
Connect one ohmmeter lead to any motor lead and one to metal drop pipe
or a good ground. R x 100K Scale
WARNING
Hazardous voltage
can shock, burn or
cause death.
Generator Operation
FAILURE TO USE A MANUAL OR AUTOMATIC
TRANSFER SWITCH WHEN GENERATOR IS USED AS
STANDBY OR BACKUP CAN CAUSE SHOCK, BURNS
OR DEATH. FOLLOW THE GENERATOR MANUFACTURER’S
INSTRUCTIONS CAREFULLY. TWO WIRE DATA IS ONLY FOR
PSC TYPE MOTORS, SPLIT PHASE 2 WIRE SHOULD BE 50%
LARGER THAN 3 WIRE GENERATOR RATING.
Generator Operation
Technical Data
CAUTION
Minimum Generator Rating
Externally Regulated
Internally Regulated
Motor HP KW KVA KW KVA
.5 2.5 3.1 1.8 2.2
.75 3.5 4.4 2.5 3.1
1 5 6.3 3.2 4
1.5 6 7.5 4 5
.5
2
2.5
1.5
1.9
.75 3 3.8 2 2.5
1 4 5 2.5
3.2
1.5 5 6.3 3 3.8
2
7.5
9.4
4
5
3
10
12.5
5
6.3
5
15
18.8
7.5
9.4
7.5
20
25
10
12.5
10 30 37.5 15 18.8
2 Wire
1Ø
PSC Only
3 Wire
1Ø or 3Ø
