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• Three Phase Volt-Amp Meter With Protection : KM-21 Series
KM-21 Series is a meter for measuring voltage (V) and current (A),
equipped with protection relays for three-phase power systems.
• Under and Over Voltage, Phase Sequence, Phase Loss,
Phase Asymmetry Relay.
• Under and Over Current Protection Relay.
• Voltage measurement range: 20–500 VAC.
• Current measurement range: 0.01–5 A, maximum display up .
to 9999 A (via CT Ratio Range 1–2000, 10,000/5 A).
• Fault Display with Memory showing the cause of Relay OFF.
• RS-485 Modbus RTU Protocol.
• Peak Hold for maximum voltage and current values.
• LED indicators for Output operation and Peak status.
• Manual / Auto display of voltage and current values for each phase
KM-21 Series is a meter that measures and displays both voltage and current in a single unit for a three-phase system. It is equipped with Voltage Protection Relay and Current Relay to protect against undervoltage, overvoltage, phase loss, phase asymmetry, and incorrect phase sequence. The meter can record the maximum peak values of voltage and current that occur, allowing analysis of system behavior.
• Three Phase Volt-Amp Meter With Protection : KM-21 Series
KM-21 Series is a meter for measuring voltage (V) and current (A),
equipped with protection relays for three-phase power systems.
• Under and Over Voltage, Phase Sequence, Phase Loss,
Phase Asymmetry Relay.
• Under and Over Current Protection Relay.
• Voltage measurement range: 20–500 VAC.
• Current measurement range: 0.01–5 A, maximum display up .
to 9999 A (via CT Ratio Range 1–2000, 10,000/5 A).
• Fault Display with Memory showing the cause of Relay OFF.
• RS-485 Modbus RTU Protocol.
• Peak Hold for maximum voltage and current values.
• LED indicators for Output operation and Peak status.
• Manual / Auto display of voltage and current values for each phase
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