Smart Power Systems HR-30 (3-Phase) - Manual (Page 45)

Smart Power
®
Systems
A. C. MODULAR GENERATOR SYSTEM
Page 44 of 52
Electrical Problems
1.
No Output Voltage:
a. No output voltage may be caused by excessive current draw opening the circuit
breakers. Remove all electrical loads from the generator and reset breaker(s).
Re-engage electrical load in increments. If possible, monitor current draw with
the Command & Control Center to determine which portion of the load is
causing the breaker to open.
b. The PTO is faulty. Verify that the drive shaft that links the pump to the hydraulic
pump is spinning when the PTO is engaged. If the shaft is not turning, the
probable cause of the failure is a non-functional PTO. Contact the PTO
manufacture or qualified representative for further information.
c. The generator’s system controller has lost power (reference Figure 2). The
Command & Control Center would stay dark even after the mode and/or on/off
switch is pressed. Verify that the vehicle +12V supply has both +12 volts and
ground. If 12 volts is not available check the vehicle for a blown fuse or a
loose/open electrical connection.
d. The stator field may be shorted or open. Contact Smart Power
®
Systems at
(231) 832-5525 for more information.
WARNING:
Do not attempt to measure stator field resistance while the system is operating.
Electrical shock may occur.
e. The exciter field may be shorted or open. Measure the resistance of the exciter
field using an ohmmeter. The resistance of the exciter field should be
approximately 18 ohms. Contact Smart Power
®
Systems at (231) 832-5525 if
the resistance is significantly higher, or open.
WARNING:
Do not attempt to measure the exciter field resistance while the system is operating.
Electrical shock may occur.
f. The generator drive motor is faulty. Observe the generator while the system is
engaged. If it is not rotating, there may be a problem in the motor, or the motor-
to-generator linkage.