XHDD503＋XHGG502
Introduction
The cable fault location instrument uses the acoustic and magnetic
synchronization method to determine the power cable fault point.
The electronic flashover is generated by the impact discharge
generator, picked up and amplified by the corresponding probe, and
the precise location of the fault point is determined by auditory
and visual judgment. It is a device that completes the precise
positioning of the cable fault point within the rough measurement
range and collects the acoustic and magnetic time difference. It
integrates positioning technology, path-assisted testing and other
technologies, providing multiple test modes and rich and diverse
prompt information to efficiently and accurately complete cable
fault location.
1.Technical indicators
| 1 | Filter parameters | All-pass: 100Hz~1600Hz.
Low pass: 100Hz~300Hz.
Qualcomm: 160Hz~1600Hz.
Bandpass: 200Hz~600Hz. |
| 2 | Channel gain | 8 levels adjustable. |
| 3 | Magnetic channel gain | 8 levels adjustable. |
| 4 | Output gain | 16 levels (0~112db) |
| 5 | Output impedance | 350Ω |
| 6 | Acoustomagnetic positioning accuracy | less than 0.2m. |
| 7 | Path identification accuracy | less than 0.5m. |
| 8 | Power supply | 4*18650 standard lithium batteries. |
| 9 | Standby time | more than 8 hours. |
| 10 | Volume | 428L×350W×230H |
| 11 | Screen pixels | 854-480 |
| 12 | Brightness | 800nit |
| 13 | Transmission speed unit | 0-100ms |
| 14 | Accuracy | 1ms |
| 15 | Sound bandwidth | 100-1.6khz |
| 16 | Magnetic coil bandwidth | 100-20kHZ |
| 17 | Both sound and magnetism are | greater than 75db |
| 18 | Weight | 6.5kg. |
| 19 | Ambient temperature | -25~65ºC; Relative humidity: ≤90%. |
Operation panel introduction
1 Adjustment: Press the adjustment button to enter the adjustment
interface, and rotate the adjustment button to set the adjustment
parameters;
2 Power supply: Turn on and off the power supply of the system.
When turning on the system, you need to press and hold the power
button for 3 to 4 seconds until you hear a long "beep" sound, then
you can lift the button; when turning off, you need to press and
hold the power button for 3 to 4 seconds;
3 Display: 5-inch touch display.
1 Sensor: Probe sensor connection port;
2 Charging: charger connection port;
3 Dedicated headphone jack.
Packing list
Picture the scene
Accurately and quickly detect the main insulation failure of power
cables with voltage levels of 35KV and below; calibrate the cable
length; roughly test cable fault distance
*Pre-locating cable faults with the reflectometer XHGG502 based on
the low-voltage pulse reflection method (TDR),
high voltage flashover method (ie. ICE, DECAY), arc reflection
pulse reflection method (ARC single shot and ARC multi-shot) Cable
fault pre-location: with the reflectometer XHGG502 based on the
low-voltage impulse reflection method(TDR), and high-voltage
decay(flashover) method (DECAY), arc reflection method(single-shot/
multi-shot).
There are three test mode of XHGG502, low voltage pulse, high
voltage flashover, ARC multi-shot.
The below picture shows cable fault distance measured by using ARC
multi-shot test mode of XHGG502.
The below picture shows cable fault distance measured by using high
voltage flashover test mode of XHGG502
The below picture shows cable length or cable open circuit fault
distance measured by using low voltage pulse test mode of XHGG502.
When using the low voltage pulse method, it is not necessary to
connect the high voltage pulse generator. Other test methods must
be used in conjunction with a high-voltage pulse generator.
New version New version
The XHHV535-2L high-voltage pulse generator is mainly used for
shock discharge during cable fault test.It can also be used for DC
withstand voltage test of other electrical equipment. This device
integrates DC high voltage source, energy storage capacitor,
discharge ball gap, etc. This device completely replaces the
traditional hundreds of kilograms of test transformers, operation
boxes and pulse energy storage capacitors (generally a set of 5kVA
transformers are more than 60 kilograms, control The box is more
than 30 kg, and the pulse energy storage capacitor is more than 20
kg). The power supply adopts high-precision, high-stability special
high-voltage electronic components and high-frequency high-voltage
technology, which makes the whole machine simple in structure and
ultra-light in weight. In order to retain people's habit of using
transformers and operation boxes to generate DC high voltage, this
pulse generator adopts humanized design and operation mode, which
is safe and reliable. Really achieve the effect of not being
damaged by impact, and the short circuit of high voltage to ground
can also work normally. It is currently the lightest and most
user-friendly portable DC shock high-voltage equipment. It is an
ideal product for power cable fault detection.
Product features
★ With over-current, over-voltage, overheating automatic protection
function;
★ With DC withstand voltage, impact discharge function;
★ The high-voltage pulse output is uniform and controllable;
★ Super short-circuit protection function, which can make the
high-voltage output directly short-circuit to the ground;
★ It has dual 2.5-level pointer meters for current and voltage
display, which is intuitive and clear, and it is clear at a glance
whether the fault point is fully discharged, and the discharge
process is reflected in real time;
★ High-voltage side voltage meas
Technical data
| Impulse voltage | 0-35kV |
| High voltage partial pressure | 2.5 class |
| Built-in capacitor | 2μF |
| Discharge power | 0~1225J |
| Output voltage polarity | negative polarity |
| Over-current protection | 8mA (more than 3 seconds) |
| Impact power | 400W |
| Over temperature protection | 85ºC |
| Volume(mm) | 540L×300W×450H |
| Weight | no more than 25kg |
| no more than 25kg | AC 220V±10%/50Hz±2Hz |
| Ambient temperature | -20~+60ºC |
Panel introduction
1. Safety ground: The ground of the instrument shell must be
reliably connected to the ground in order to prevent the instrument
shell from being electrified or electric shock to personnel.
2. High-voltage ground: Also known as high-voltage tail, it must be
grounded reliably to prevent high-voltage leakage and discharge.
Poor contact may cause failure to boost the voltage, high voltage
breakdown of the internal components of the instrument, and safety
accidents caused by leakage or discharge inside the instrument.
3. Sampling ground: The negative terminal of the pulse energy
storage capacitor has a high voltage and must be grounded reliably.
It is used for sampling when the waveform is sampled under the
high-voltage flashover state of the cable fault tester. (Without
high-voltage flashover sampling, reliable grounding is still
required).
4. Discharge button: Press this button to make contact with the
ball gap, and discharge manually. (The duration of each key press
cannot exceed 1s).
5. High voltage start button: When the start button light is on, it
means that the voltage output is in the zero position. When the
light is on, the start button is valid. If the start button light
is not on after turning on the power switch, turn the voltage
adjustment knob counterclockwise until the light is on. When the
button light is on, press this button to start the device and
generate high voltage output.
6. High-voltage stop button: When the test is completed or an
abnormality occurs, press this button to cut off the high-voltage
output, the high-voltage light goes out, and the internal discharge
ball stops working. When the stop key is on, it means there is high
voltage output, and when it is off, it means there is no high
voltage output.
7. Over-current protection switch: When pressed, it means that the
over-current protection function has started; when it is popped up,
it means that the instrument has triggered the over-current
protection.
8. Voltage adjustment: After turning on the device, you must first
turn the knob conterclockwise to the end, press the start button, and then adjust
clockwise to increase the output high voltage from small to large,
and adjust counterclockwise to reduce the output high voltage from
large to small.
9. Power switch: "I gear" turns on the AC 220V power supply switch,
and "0 gear" turns off the system power.
10.The fuse holder: the place where the fuse of the AC 220V power
supply system is installed.
11. Power socket: the working power supply of the instrument, AC
220V connection port.
12. Time setting: Set the discharge time interval.
13. Ammeter: indication of the current on the high voltage side.
14. Voltmeter: high voltage output voltage indicating kV meter.
15. High-voltage output (EMP): When impacting discharge, connect
the high-voltage output line.
16. High voltage output (DC): When DC withstand voltage, connect
the high voltage output line.
Packing list
Application- underground cable fault location
We are a professional manufacturer of cable fault detection
equipment, we can customize the special technical solution for you.
Welcome you contact us for more information.
