Pointer frequency meter with two separate systems
low self-consumption
Synchronisation of two grids
Elektronische Frequenzmessung
Auxiliary voltage generation from the measuring circuit
Terminal cover according to VGB 04 (option)
The PQFeDd type instruments are designed to measure two frequencies in the range between 45 and 65 Hz. They are used in the synchronisation of two networks.
Accuracy class
45...55 Hz, 48...52 Hz, 55...65 Hz: 0.545...65 Hz: 1(according EN 60 051)
Housing
Polycarbonate self-extinguishing, according to UL 94 V-0
Protection class
Housing IP 52Terminals IP 00 (IP 20 for size 45)according to 60529: 1989
Mounting position
vertical ± 5°
Climate class
2 according VDE/VDI 3540
Temperature
Reference range +18 ... +28°CWorking range -25 ... +55°CStorage -40 ... +70°C
Relative humidity
≤ 80 % (without condensation)
Voltage values
100 V
110 V
230 V
400 V
500 V
Frequency values
2x 45...65 Hz2x 48...52 Hz2x 45...65 Hz2x 55...65 Hz2x 58...62 Hz
Further measuring ranges available, intermediate values possible