SFRA Sweep Frequency Response Analyzer | SFRA45

SFRA Sweep Frequency Response Analyzer | SFRA45

SFRA Sweep Frequency Response Analyzer – Overview

This Sweep Frequency Response Analyzer with a bandwidth of 5Hz to 45MHz offers a fully portable solution which fully complies with IEC60076-18 – Power Transformers Part 18 – Measurement of frequency response. Featuring a built-in colour LCD screen and is battery powered. The tablet style instrument has the ability to perform most the common sweep frequency response analysis technique “Fingerprint Comparison” as well as all other comparison techniques, with or without PC Software. The dedicated software available (SFRAComm) also enables the user to create databases from which historical transformer sweeps can be recalled and compared to current sweeps for analysis.

There are Four occasions when SFRA is performed

  1. Upon factory quality checking
  2. Before a short circuit test
  3. Before and After transportation
  4. Ongoing scheduled maintenance

SFRA Sweep Frequency Response Analyzer – Features  

  • Full Colour LCD VGA Display view comparison on the spot
  • Frequency range 5Hz to 45MHz
  • Gain Accuracy 0.02dB
  • Phase Accuracy 0.05°
  • RS232, LAN and USB
  • PC Software package included
  • 2Hr Battery Life
  • Leading Phase Accuracy
  • Truly Portable Measurements
  • LCR Mode
  • Save Data to external USB
  •  50Ohm or High Impedance Input
  • Scope Function
  • Save Data to Database for comparison
  • Supplied with all accessories and carry case

Datasheet

Description

SFRA Sweep Frequency Response Analyzer | SFRA45

MEASUREMENT SPECIFICATION
Frequency Response Analyser
Measurement Magnitude, Gain (CH1/CH2, CH2/CH1),Gain (dB), Offset Gain (dB), Phase (º)
Frequency Range 5Hz – 45MHz
Gain Accuracy in dB 0.02dB < 50kHz
0.02dB + 0.05dB / MHz < 5MHz
0.1dB + 0.04dB / MHz < 45MHz
Phase Accuracy 0.05º < 10kHz
0.07º + 0.0009º / kHz < 5MHz
5.05º + 0.0001º / kHz < 45MHz
Frequency Source Generator
Measurement Real Time DFT, no missing data
Speed Up to 100 readings per second
Filter Selectable from 0.2 seconds
Resolution 5 or 6 digits
Input Impedance 50 Ohm or 1M Ohm High Impedance (Selectable)
Dynamic Range 120dB
L C R Meter
Functions L,C,R (AC), Q, Tan Delta, Impedance, Phase – Series or Parallel Circuit
Frequency Range 5Hz to 5MHz
Current Shunt 50R Internal or External
Ranges Inductance
Capacitance
Resistance
Basic Accuracy 0.5% + 2%/MHz
Sweep Capability All AC functions
Impedance Range 100m Ohm to 100K ohm
True RMS Voltmeter
Channels 2 (Ground Referenced)
Frequency Range 5Hz to 5MHz
Measurement AC, RMS, PEAK, CF, SURGE, dBm
Basic Accuracy (AC) 0.05% range + 0.05% reading + 0.1mV < 1kHz
0.15% range + 0.15% reading + 0.1mV < 10kHz
0.5% range + 0.5% reading + 0.025%/kHz + 0.4mV < 5MHz
Signal Generator
Type Direct Digital Synthesis , Single Frequency or Sweep
Frequency 5Hz to 45MHz
Waveforms Sine, Square, Triangle, Ramp, White Noise
Accuracy Frequency 5ppm over all temperature range
Amplitude ±5% < 10MHzAmplitude ±10% < 45MHz
Impedance 50 Ohm ± 2%
Scaling 1 x 10^-9 to 1 x 10^9
Output Level 50mVpk to 10Vpk
INPUT RANGES
Inputs 2 x 10Vpk
Connectors Ground referenced BNC
Coupling AC
Max Input 10Vpk from Earth
Input Ranges Peak ranging 1mV, 3mV, 10mV, 30mV, 100mV, 300mV, 1V, 3V, 10V
Scaling 1 x 10^-9 to 1 x 10^9
Ranging Full auto, Up only or Manual
Input Impedance 50 Ohm or 1M Ohm High Impedance Selectable
ACCESSORIES AND PORTS
Instrument Accessories
Leads 3 x BNC to BNC (Output, CH1, CH2), RS232, Power
Software CommView, SFRAComm
Documentation Calibration Certificate, User Manual
Newtons4th SFRA Transformer Connection System
Bushing Clamps 2 x Bushing Connection Clamps
BNC Cable Reel N4L 18m Cable reel (Signal, CH1, CH2)
Earth Braid 2 x 5 meter Earthing Braid
Earth Clamps 2
Spare Earth Braid 2 x 500mm
USB Memory Stick 2 GB
SYSTEM SPECIFICATIONS
Sweep
Functions FRA, Impedance
Steps Up to 2000 Steps
Window From 50ms with no gap between each log
Memory 1 GB Internal or External USB
General
Display 5.7″ 1/4VGA Colour high brightness backlit
Dimensions (Instrument) 305H x 230W x 45D mm “Tablet Style”
Weight (Instrument) 2.7Kg
Dimensions (Carry Case) 760mm x 420mm x 150mm
Weight (Full system including case) 14.9Kg
Program Stores 100, Location 1 loaded upon power up
Sweep Stores 2000, all parameters in any sweep function
Remote Operation Full Capability, Control and Data
Operating Temperature -5 to 50ºC
Storage Temperature -10 to 60ºC
Relative Humidity Range 20 to 90% Non-Condensing
IP Protection of Inputs and Outputs IP30 – CEI EN 60529
Max Altitude 2,000 Meters
Power Supply 9-18V @ 3A, AC adapter or 12V dc from car or external batteries
Warranty 3 Years

SFRA Sweep Frequency Response Analyzer | SFRA45

Brand

Newtons4th

Newtons 4th logo

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