Model 400A Separate Type
Introduction
It has all the same functions and specifications as 300A integral type. The differences are that the display and calculation sections are in the computer, and additionally more functions like computer management system software, double line cursors for length indication, result storage
and printing out. Sizes and weight: 455 x 300 x 190 mm, 8 kg. |
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| Specifications︰ | Specifications
- Capable for testing every failure of all kinds of power cables of 35 KV lower voltage grade with copper or aluminum core, such as failures of open circuit, short circuit, high resistance flash aspect, and high resistance leakage aspect.
- Electric wave propagation velocity of most common cables are preset for convenient testing, such as polyethylene cable, PVC cable, and oiled paper cable. Cable length and failure distance are directly indicated in screen without manual calculation.
- Test distance: maximum 16 km tested from bilateral ends.
- Four types of wave sampling frequencies:
40, 20, 10, and 5 MHz.
- Error: relative error within +/-2%, absolute error 15 m for 1 km less length, 20 m for over 1 km length.
- Differentiability: V/2f meter (V: electric wave propagation velocity in cable, f: sampling frequency), For example, V=160m/us, 40MHz sampling frequency used for measuring, screen cursor moving one unit of dot will mean 160/(2x40)=2 meters.
- Large LCD for higher resolution display.
- Measured length direct displayed after locating and moving the single line cursor to point.
- Menu help “Specialist System”.
- Measured data and chart can be stored.
- Sizes and weight: 455x315x195 mm, 9 kg
Integrated Path Signal Generator Data
- Generate 15 kHz sine wave signal
- Output power not less than 30 watt
- Vibration type: intermittent
- Voltage 220 V AC +/- 10%, 50 Hz
- Working ambient: -10 to 45 deg. C
Standard Accessory: Point Locator Data
- Sensibility: Signal generator of 50 ohm sending 300 Hz signal, point locator maintains non-distorted output of 2 V, input signal not above 10 micro-volts at signal to noise ratio better than 20:1
- Task type selection:
Point locating I: Signal received via 300 Hz filter amplifier
Point locating II: Signal received via direct amplifier
Path tracing: Path tracing and depth measuring
- Input impedance not less than 1.2 k. ohm
- Ear phone 2 x 2000 ohm
- Working voltage: 9 V +/- 10%
- Working current: locating 5 mA, tracing 7 mA
- Working ambient: -10 to 45 deg. C
- Sizes and weight: 455x300x180 mm, 8 kg
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