Accumetrics’ Earth Fault Resistance Monitor, Static Rotor Exciter Ground Fault Detector, Rotor Health Monitor, and Ground Detection System all offer superior ground fault protection of motors and generators. Our systems monitor for insulation faults on the field windings of
generators and synchronous motors with brushless exciters. They employ advanced wireless techniques to transmit measurement data from the rotor to a stationary receiver unit.
Accumetrics’ rotor ground fault detection systems are in a class of their own. They provide immediate notification of field ground faults, reducing the risk of prolonged and costly unscheduled outages.
Earth Fault Resistance Monitor | AT-8000
Continuous, reliable monitoring for faults while rotating or at standstill- User customizable ground alarm threshold
- Fault location indicator
- Trending and archiving capability
- Continuously monitors field excitation voltage and insulation resistance
- Non-intrusive end of shaft or custom mid-shaft mounting options
- Built-in self-diagnostics and malfunction alarm
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Static Exciter Rotor Ground Fault Detector | AT-8100
Continuous,
reliable monitoring for faults on brushed exciter field windings- Operates while rotating or at standstill
- Trending of fault severity resistance
- Indication of fault location for ease of diagnosis and repair
- Ongoing monitoring of field excitation voltage
- Alarm relay contact outputs for multiple resistance limits
- Built-in self-diagnostics and malfunction alarm
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Rotor Health Monitor | AT-8300
Continuous,
reliable monitoring for faults while rotating or a standstill- User customizable ground alarm threshold
- Fault location indicator
- Trending and archiving capability
- Dual alarm relay contact outputs
- 4-20 mA outputs available
- Field voltage level and current monitoring
- RTD monitoring for specific location temperatures
- Current shunt can be installed to measure field current
- Non-intrusive end of shaft mounting
- Built-in self-diagnostics and malfunction alarm
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Ground Detection System | AT-8600
Continuous, reliable
monitoring for faults while rotating or at standstill- Fixed ground alarm threshold of 10 k Ohm
- Non-intrusive end of shaft mounting
- Built-in self-diagnostics, malfunction alarm, and open wire detection
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Accutector Rotor Ground Fault Monitor | AT-9000
- Continuous insulation resistance measurement
- Temperature monitoring
- Location factor measurement
- Seamless replacement for the obsolete Rotector Model AS-9000
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