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FRAX User's Manual
© 2011 Megger Sweden AB
1.2
FRAX Technical Specifications
General
FRA Method:
Sweep frequency (SFRA)
Frequency Range:
1 Hz - 10 MHz, user selectable
Extended Frequency Range:
0.1 Hz - 25 MHz, user selectable
Number of Points:
User selectable, maximum 32,000
Points Spacing:
Logarithmic, linear or combination of both
Dynamic Range/Internal Noise:
Dynamic Range/Internal Noise: >130dB (FRAX-99
>115dB). Extended range >110dB
Accuracy:
±0.5 dB (FRAX-99 ±1 dB) down to -100dB
IF Bandwidth/Integration Time:
User selectable
Software:
FRAX for Windows 2000/XP/Vista
PC Communication:
Bluetooth (FRAX-101) and galvanic isolated USB
Calibration Interval:
Maximum 3 years
Standards:
Fulfill requirements in CIGRE Brochure 342,
Mechanical Condition Assessment of Transformer
Windings using FRA and Chinese standard DL/T
911-2004, FRA on Winding Deformation of Power
Transformers
Analog Output
Channels:
1
Compliance Voltage:
0.2 - 20 V peak-to-peak
Measurement Voltage at 50 Ohm 0.1 - 10 V peak-to-peak
Output Impedance:
50 Ohms
Protection:
Short-circuit protected
Analog Inputs
Channels:
2
Sampling:
Simultaneously, 100MS/s
Input Impedance:
50 Ohms
Physical
Instrument Weight
1.4 kg/3.1 lsb, 1.9 kg (FRAX-101 with Battery)
6 kg (13 lb) (FRAX-150)
Dimensions
250 x 169 x 52 mm (9.84 x 6.65 x 2.05 in.)
305 mm x 194 mm x 360 mm (12 in. x 7.6 in. x
14.2 in.) (FRAX-150)
Input Voltage
90-135VAC and 170-264VAC, 47-63 Hz
Environmental
Operating Ambient Temperature: -20° to 50°C (-4 to 122°F), Bluetooth 0° to 50°C
-5° to 50°C (23 to 122°F) for FRAX-150
Operating Relative Humidity:
< 90% non-condensing
Storage Ambient Temperature:
-20° to 70°C
Storage Relative Humidity:
< 90% non-condensing
CE Standards:
IEC61010 (LVD) EN61326 (EMC)
PC requirements
