DV Power has released a new generation of test equipment for condition assessment of medium and high voltage circuit breakers.
Field-portable instruments with standalone or PC controlled functionality, allow performing various tests during circuit breaker manufacturing, commissioning and maintenance stages.
Features:
1 break per phase
Portable (1,4 kg / 3.1 lbs)
Internal battery power supply
Online measurement (First trip test)
Offline measurement
DC voltage and DC current measurement
Touch screen color display 145 mm (5.7 in)
On-site analysis of test results (overlay up to 4 records in graphical form)
Test results analysis and comparison with results obtained from other CAT instruments using DV-Win software
Software:
DV-Win application software suite provides acquisition and analysis of the test results.
Graphical presentation of a variety of measurement and timing test results uses cursors and powerful zoom functions for detailed analysis.
Colors, grids, scales and positioning of the test data are all controlled by the user.
DV-Win supports an automatic unit conversion (e.g. cycles to seconds or mm to inches).
The test records can be exported in .dwc file format for further analysis.
Applications:
Offline and on-line testing of circuit breakers - the onsite analysis of circuit breaker defects for immediate attention
Timing measurement of up to 3 main contacts (1 break per phase) and auxiliary contact
A measurement of the coil currents
Evaluating the state of the substation’s battery by presenting the voltage value numerically and graphically
Online measurement (First trip test) as a fast and simple on-line test which can be performed by a single operator in around 10 minutes. The capture of the vital First trip operation through non-invasive connections while in the energized state.
Included accessories:
DV-Win software including USB stick and USB cable
Resistive touch pen
Plastic transport case
Mains power cable with adapter
Main contact inputs:
Number of contact inputs: 3 (3 x 1), 1 per phase
Each channel detects Main contacts
Closed ≤ 10 Ω
Resistor contacts range 10 Ω to 5 kΩ
Open ≥ 5 kΩ
Open circuit voltage: 20 V DC
Short circuit current 50 mA
Time measurement:
Time measurement resolution:
0,05 ms for 1 s test duration (sampling rate 20 kHz)
0,1 ms for 2 s test duration (sampling rate 10 kHz)
Time accuracy: 0,05% of the reading ± resolution
Breaker operation:
Close (C)
Trip (O)
Close-Trip (C-O)
Trip-Close (O-C)
Trip-Close-Trip (O-C-O)
First trip test
The user can select any above stated test sequence
DC Current Clamps:
Nominal current: 300 ARMS or 450 A DCPK
Measuring ranges: 30/300 A
Frequency range: DC to 20 kHz (-3 dB)
AC Current Clamps:
Measuring Range: 0,05 A to 5 ARMS
Accuracy: ±3% ±1 mV (from 0,05 A to 0,5 A), ±1,5% ±1 mV (from 0,5 A to 1 A), ±1% (from 1 A to 5 A)
DC Voltage Measurement:
Range: ±300 V
Typical accuracy: ±0,5% RDG ±0,5% FS
Guaranteed accuracy: ±1% RDG ±1% FS
Internal Battery Supply:
2 x 3,7 V, 2900 mAh rechargeable Li-ion battery
8 hours under normal usage
Display:
Touch screen color display 145 mm (5.7 in)
Graphic and numeric results
Please feel free to contact for detailed specifications, accessories, software and options.