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Current Monitoring Relays
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Rhomberg current monitors, are used to monitor AC or DC current, and switch a relay contact at a pre-determined level, primarily used for overcurrent or undercurrent protection. (Available in 11-pin plug-in or DIN rail format)
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SP103
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Current Monitoring Relay - Single Phase - 1A/5A AC(rms)/DC
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Overload or Underload monitoring & protection
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Features
- 11-pin plug-in.
- Fail-to-safe design.
- Programmable for overload or underload monitoring.
- 1A or 5A, AC or DC input range (programmable).
- Internal shunt for direct in-line current sensing (max 5A AC or DC).
- Direct interface with conventional current transformers for >5A.
- Trip point adjustable on percentage scale (10% to 100%).
- Adjustable hysteresis (5% to 30%).
- Adjustable response time on trip (0.1 to 10 seconds).
- Start-up delay 10 sec fixed.
- Selectable latching (ie manual or auto reset).
- Relay ON LED.
- 10A SPDT relay output.
- Supersedes SP100
- Requires optional S3-B 11-pin base.
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Data Sheet
More Info
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SP104
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Current Monitoring Relay - 200mA, 60mV, 150mV, 5V inputs
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Overload or Underload monitoring & protection
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Features
- 11-pin plug-in.
- Fail-to-safe design.
- Programmable for overload or underload monitoring.
- 0-200mA AC (RMS)/DC 60mV/150mV (DC Shunt) 0-5V AC (RMS)/DC
- Direct interface to DC shunt resistors.
- Internal shunt for direct in-line sensing current up to 200mA (AC/DC)
- Trip point adjustable on percentage scale (10% to 100%).
- Adjustable hysteresis (5% to 30%).
- Adjustable response time on trip (0.1 to 10 seconds).
- Start-up delay 10 sec fixed.
- Selectable latching (ie manual or auto reset).
- Relay ON LED.
- 10A SPDT relay output.
- Supersedes SP101
- Requires optional S3-B 11-pin base.
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Data Sheet
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SP510
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Single Phase Reverse Power Monitor
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Monitoring of AC power flow in one direction only
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Features
- 11-pin plug-in.
- Fail-to-safe design.
- Protection against current flowing into generator instead of out of generator
- Reverse current tripping level adjustable up to 20% of maximum forward current
- Internal shunt for direct in-line current sensing (max 5A AC).
- Direct interface with conventional current transformers for >5A.
- Adjustable response time on trip (1 to 10 seconds).
- Adjustable start-up delay (0.1 to 10 seconds).
- Selectable latching (ie manual or auto reset).
- Relay ON & Reverse Power LEDs.
- 10A SPDT relay output.
- Requires optional S3-B 11-pin base.
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Data Sheet
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