Features
Voltage Sensing Input and Power Input can be single-phase or 3-phase
Digital voltage sensing circuit and Under Frequency Protection circuit improve thermal drift characteristics
Over Excitation Protection // Under Frequency Protection // Soft Start voltage ramping
Can be used with generators operating parallel
Built-in high capacity protection fuse
Built-in EMI suppression
Can be used together with KUTAI Auxiliary Excitation Booster to increase motor starting capability of self-excited (shunt) generators
Specifications
Sensing Input (Average Reading)
Voltage 90 to 520 Vac 1 phase / 3 phase DIP switch setting
Frequency 50 / 60 Hz DIP switch setting
Power Input
Voltage 60 to 300 Vac 1 phase / 3 phase
Frequency 40 to 500 Hz
Excitation Output
Continuous 125 Vdc 8A @ power input 220 Vac 1 phase
Max. 180 Vdc 10A for 10 seconds
Resistance
Min. 15 ohms Max. 100 ohms @ 220V
Fuse Spec
Slow blow 5 x 20 mm 10A
External Volts Adjustment
Max. +/-10% @ 1 kΩ 1 watt potentiometer
Quadrature Droop Input
CT N:5A or N:1A
Burden > 5 VA
Analogue Voltage Input
Input resistance greater than 2 kΩ
Range +/-5 Vdc or + 0 to 10 Vdc
Build Up Voltage
5 Vac 25 Hz residual volts at power input terminal
Soft Start Ramp Time
4 seconds +/-10%
Volts Regulation
Less than +/-0.5% (with 4% engine governing)
Typical System Response
Less than 20 milliseconds
EMI
Built-in Harmonic suppression
Static Power Dissipation
Max. 6 watts
Under Frequency Protection (Factory Presets)
50 Hz system presets knee point at 45 Hz
60 Hz system presets knee point at 55 Hz
Over Excitation Protection
25 to 105% of input power (adjustable)
Voltage Thermal Drift
Less than 3% from -40 to +70 °C
Under-Frequency Knee Point Thermal Drift
Less than +/-0.1 Hz from -40 to +70 °C
