EA448B

Kutai EA448B Automatic Voltage Regulator (AVR).

Automatic Voltage Regulator (AVR)

Specifications

Sensing Input \| (Average Reading)	Voltage 95 to 520 Vac 1 phase 2 wire (DIP Switch Settings) \| 110 Vac Adjustment Range 95 – 140 Vac \| 220 Vac Adjustment Range 170 – 260 Vac \| 380 Vac Adjustment Range 340 – 520 Vac \| Frequency 50/60 Hz (Jumper selected)
Power Input	Voltage 40 to 150 Vac 1 phase 2 wire \| Frequency 40 to 500 Hz
Auxiliary Input	Voltage 40 to 150 Vac 1 phase 2 wire \| Frequency 40 to 500 Hz
External Volts Adjustment	Max. +/-10% @ 1KΩ 1 watt potentiometer
Quadrature Droop Input	Sensitivity +/- 7%@ PF +/- 0.7 (STAT. Adjustable)
Build Up Voltage	5 Vac 25Hz residual volts at power input terminal
Excitation Output	Continuous 110 Vdc 7A @ power input 120 Vac \| Max. 160 Vdc 10A for 10 Sec. \| Resistance Min. 15Ω, Max. 100Ω @120V \| Fuse Spec. Slow blow 5 x 20mm 10A
Voltage Regulation	Less than +/- 0.5% (with 4% engine governing)
Soft Start Ramp Time	3 seconds +/- 10%
Typical System Response	0.3 to 1 second @ +/-20% voltage vibration
Static Power Dissipation	Max. 4 watts
Under Frequency Protection	50 Hz system knee point at 45Hz \| 60 Hz system knee point at 55Hz
Over Excitation Current limitation	3.5A to 10A (EXC.MAX. Adjustable)
Voltage Thermal Drift	Less than 3% from -40 to +70 °C

AVR Control Functions

VOLT	Voltage adjustment
STAB	Stability adjustment
V/HZ	Under Frequency Adjustment
EXC.MAX	Over Excitation Current Limiting
STAT	Quadrature Droop Adjustment

Environment

Operating Temperature	-40 to +70 °C
Storage Temperature	-40 to +85 °C
Relative Humidity	Max. 95%
Vibration	5.5 Gs @ 60 Hz

Physical Specifications

Dimensions	203.0 (L) x 153.0 (W) x 60.5 (H) mm \| 7.99 (L) x 6.03 (W) x 2.38 (H) inch
Weight	850 g +/-2% \| 1.874 lb +/- 2%