High voltage refractometrically complex "Iskra-3M

The high voltage domain reflectometer oscillographic “ISKRA-3” (hereinafter referred to as “TDR”) designed to determine the distance to the fault of the communication cables and cables power supply.

           The device allows you to:

- to detect and determine the distance to the fault or heterogeneity of location (refractometrically) method for symmetric and asymmetric cables;

- to measure the length of cables (including drums and coils) or distance to open or short circuit;

- remember, store and processing the results of measurements;

- as part of mobile the tester can determine the distance to the fault in the cables up to 12 km for all types of damage without the use of prior full burning insulation.

The device lets be stored in internal non-volatile memory 4 groups of measurements (up to 15 the traces in each), as well as save them to your computer for further analysis and accounting. (This function is implemented according to individual requirement the customer).

1.2. The reflectometer is designed for operation inside indoor (in particularly in covered vehicles under the following conditions:

· temperature range ambient air, OS - from -10 to +40;

· relative humidity air at a temperature of 25 C - up to 80% ;

· atmospheric pressure, mm RT. Art. - 650 - 800;

 

 

 

2. TECHNICAL DATA

 

2.1. Maximum measured the distance to the fault, km - 12,3

2.2. The minimum measured the distance to the fault, m - 3

2.3. The measurement resolution, m - 0,2

2.4. Parameters high-voltage pulse at the load 30 Ohm:

· amplitude, kV - from 3 to 25

· the length of the front, ISS, not more 0,15

pulse duration, µs, not less than - 2

2.5. The parameters of the low-voltage probe pulses at a load of 30 Ohms:

· amplitude, V - 5

· the length of the front, ISS, not more 0,02

· pulse duration, µs, - 0,05-0,5

2.6. Maximum operating the sensor voltage impulse voltage, kV - 60

2.7. The measurement error of the distance to the fault high voltage depends on the mode measurement and breakdown voltage the damaged area.

In the case of distance measurement on high the voltage in the ‘swim breakdown’, idle, short circuit the error ranges from +15 to +25 meters at a distance of 1 km, and from +20 to +40 meters at a distance of over 1 km

2.8. Weight the results are presented in section 3. ”The structure and completeness of the reflectometer”.

2.9 Reflectometer allows continuous operation for 8 hours.

2.10 service Life reflectometer - at least 5 years.

 

 

3. THE COMPOSITION AND COMPLETENESS REFLECTOMETER

 

Name and type an integral part of

Overall dimensions, mm

Weight, kg

Col.

1. The reflectometer high-voltage SPARK-3”

 

3

1

2. The sensor pulse current DITH-1

HH

0,3

1

3. The sensor pulse voltage DIN-2

-

-

-

4. The sensor pulse voltage DIN-1

HH

1,1

1

5. The cable connecting the low-voltage

Length 1.5 m

 

1

6. The coaxial cable connection

Length 0.4 m

 

1

7. The reflectometer high voltage oscilloscope “ISKRA-3”. The user guide.

 

 

1

8. The adder signals

 

 

1

9. A set of cables and connectors

 

 

1