TDR90 Three-ply Multiple Pulse Time Domain Reflectometer
Fully automatic cursor setting
Multiple fault locating methods
Auto-ranging and auto-fault distance
Compatible with various surge generators/filters combo on the market
User configurable velocity tables and adjustable display cursors
Weather and rain resistant to IP54 with top cover closed
Supplied with rechargeable batteries and can also be powered directly by mains supply
Description
The TDR90 is used for prelocate cable faults utilizing the following methods: TDR, Arc reflection, Three-ply Impulse current reflection or transient analysis. The unit is available as a stand-alone, or can be integrated into the Cable Test Vans & Systems. Using the TDR90 for prelocation significantly decreases fault locate times by reducing the number of surges required to prelocate. Consequently this reduces the number of surges required to pinpoint. The major benefit is the reduction of the number of surges required to pinpoint on service aged cables. It automatic gives a direct reading in meters to the fault distance. The TDR90 is your prime tool in the battle to quickly find your faults. It eliminates the time consuming and damaging process of repeatedly surging your cable in an effort to find faults.
The unit allows the operator to select the best prelocation technique based on the characteristics of the fault. The tested waveform and cursor offsets can sequence stored in the instrument, also allows recall of previously stored traces and superimposition of a stored trace on an active trace with the TDR90 finding traces simultaneously.
TDR90 Three-ply multiple pulse cable test system composition with TDR90 main unit and TMCU90 central control unit.
TDR90 be the brain of the instrument, Responsible for sending commands to other components, Coordinate the work of various parts, And provide operators with man - machine conversation interface, its main function is to hi-speed sampling and recording of the measuring pulse, Sampling frequencies above to 100MHz, and hi-speed computing analysis of the collected signal.
TMCU90 mainly in conjunction with TDR90 used for high impedance measurements.
TMCU90 is the convergence components of the high-voltage pulse, the pressure pulse and low-viltage pulse measuring. It directly affects the signal processing apparatus for the measurement accuracy, stability and the probability of success. Central control unit in the high-pressure filter unit can filter out the glitch of high-voltage pulse, so that high-voltage pulse becomes smooth, and the point of failure to form a stable arc, extending the arc, but also to reduce the high voltage pulse interference to the trace waveform analyzer and signal acquisition records. Overvoltage protection unit in addition to protecting the TDR90 from the impact of high-voltage pulse, and the important parts of the sampling, measuring the pulse output, input interaction interface circuit.
TMCU90 is a connection device used to connect TDR90 and surge generator, in order to achieve high resistance and intermittent fault pre-location. Through the use of pulse generator and the fault point at the central controller of the blocking filter, the system creates a flashover. The high impedance fault flashover will temporarily transformed into low-impedance fault. In this way, the fault can generate a reflection, and easily stored in TDR90 cable fault tester. By comparing the pre-flashover and flashover trajectory in the process of trajectory to the fault distance can be clearly demonstrated.
Specifications
Operating Modes
Three-ply pulse method
Impact high-voltage current sampling method
Low-voltage pulse method (TDR)
Type of fault can be measured
Open, Short, Low resistance fault
Flashover fault, High resistance fault
Closed fault
TDR Pulse Widths
50, 100, 200, 500 ns
1, 2, 8 us
Rangeof Usage
All kind cables below 35KV
Display
10.4”TFT color screen
Transimitting Pulse
400V
Surge Voltage
<42KV
Sampling Rate
100MHz / 50MHz / 25MHz / 12.5MHz
Resolution
0.8m(2.6ft), depending on range and mode
Length can be measured
Up to 40 kilometers
Operating Temperature
-10 to 50℃ (14 to 122℉)
Storage Temperature
-40 to 60℃ (-40 to 140℉)
Humidity
<90 percent non-condensing
Power Source
Rechargeable NiMH battery pack
(charge with standard accessories)
BatteryLife
Approximately 4 hours for continuous use
Weight
TDR90 3Kg / TMCU90 5Kg
Type of Protection
IP54, Splash proof and dust protected
FEATURES AND BENEFITS
High and Low resistance fault of all cables below 35KV levels can be measured
Using the most advanced "Three-ply multiple pulse method"test technology. As well as high flashover method and low pressure pluse method.
Showed a simple low pressure pulse short circuit waveform characteristics of any high resistance fault. Easily interpreted, Compared with the seconday pulse method is more reliable and easier
With user-friendly software and operation interface. Keypad definitions and simple. Measurement is easy and quick
The success rate of fault detection, test accuracy and test convenience better than similar products.
Samples with extremely high security protection. Test equipment will not freeze and damage in the impact of high pressure environment.
No blind area of test.
Built-in power supply, can be tested the open circuit and low resistance short-circuit fault without the AC power.
Measurement data transfer to PC
Standard Accessories
Main Unit TDR90 and Central Control Unit TMCU90 with main cables
