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Three Phase Monitors
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Rhomberg three phase monitors, are used to monitor 3 phase power supplies (plus Neutral in some applications), and switch a relay contact if any fault occurs on the supply, primarily used for the protection of equipment connected to that power supply. (Available in 11-pin plug-in or DIN rail format)
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AP231/AP232
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3 Phase Supply Monitoring Relay- Voltage Window Comparator
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Overvoltage and/or Undervoltage monitoring of power supply
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Features
- AP231 monitors 3 Phases only, AP232 monitors 3 Phases and Neutral
- Protection of phase failure & incorrect phase sequence
- DIN rail mount.
- Fail-to-safe design.
- Combined overvoltage and undervoltage monitoring with phase failure or sequence detection
- Monitoring of own supply voltage (3 phase).
- Separately adjustable setpoints: over-voltage, (5 to 20%) and, under-voltage (-5 to -20%).
- Separately adjustable response times on trip & recovery (0.1 to 10 seconds).
- Fixed hysteresis: 2%.
- Adjustable start-up delay for disabling latching 0.1 to 10 sec.
- Selectable latching (ie manual or auto reset).
- LED indication of Relay ON and fault type.
- 10A SPDT relay output.
- AP231 Supersedes P230P.
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Data Sheet
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AP234/AP235
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3 Phase Supply Monitoring Relay- Voltage Window Comparator
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Overvoltage and/or Undervoltage monitoring of power supply (2 Independent Relay Outputs)
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Features
- AP234 monitors 3 Phases only, AP235 monitors 3 Phases and Neutral
- Protection of phase failure & incorrect phase sequence
- DIN rail mount.
- Fail-to-safe design.
- Combined overvoltage and undervoltage monitoring with phase failure or sequence detection
- Monitoring of own supply voltage (3 phase).
- Separately adjustable setpoints: over-voltage, (5 to 20%) and, under-voltage (-5 to -20%).
- Separately adjustable response times on trip & recovery (0.1 to 10 seconds).
- Fixed hysteresis: 2%.
- Adjustable start-up delay for disabling latching 0.1 to 10 sec.
- Selectable latching (ie manual or auto reset).
- LED indication of Relay ON and fault type.
- 2 x 10A SPDT relay outputs (1 for Overvoltage, 1 for Undervoltage)
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Data Sheet
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AP430/AP432
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3 Phase Monitoring Relay- Phase Sequence, Failure, or Asymmetry Detection 1 C/O or 2 C/O
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Protection of loads (eg. motors) against phase angle errors, phase loss, unbalanced supply, phase reversal, single phasing
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Features
- AP430 monitors 3 Phases only, AP431 monitors 3 Phases and Neutral
- DIN rail mount.
- Fail-to-safe design.
- Monitoring on three phase supply.
- Sensitive to: NPS Voltage, Reverse phase sequence, loss of phase, phase imbalance, phase asymmetry.
- Insensitive to regenerated EMF.
- High stability under harmonic distortion
- Insensitive to balanced supply variations - prevents nuisance tripping
- Fast response to reversed phase sequence
- Adjustable NPS sensitivity.
- Power ON & Relay ON LED's.
- 10A SPDT or 5A DPDT relay output.
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Data Sheet
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SP430/SP431
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3 Phase Monitoring Relay- Phase Sequence, Failure, or Asymmetry Detection 1 C/O or 2 C/O
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Protection of loads (eg. motors) against phase angle errors, phase loss, unbalanced supply, phase reversal, single phasing
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Features
- SP430 monitors 3 Phases only, SP431 monitors 3 Phases and Neutral
- 11-pin plug-in.
- Fail-to-safe design.
- Monitoring on three phase supply.
- Sensitive to: NPS Voltage, Reverse phase sequence, loss of phase, phase imbalance, phase asymmetry.
- Insensitive to regenerated EMF.
- High stability under harmonic distortion
- Insensitive to balanced supply variations - prevents nuisance tripping
- Fast response to reversed phase sequence
- Adjustable NPS sensitivity.
- Relay ON LED
- 10A SPDT or 5A DPDT relay output.
- SP430 Supersedes SP433.
- Requires optional S3-B 11-pin base.
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Data Sheet
More Info
Order Code
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Product Comparison |
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