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Related Manuals for KEHUI T-H200
Summary of Contents for KEHUI T-H200
- Page 1 T-H200 DC Resistance Cable Sheath Fault Locator User Manual Version 1.2 Kehui International Ltd. 2 Centrus, Mead Lane, Hertford Hertfordshire, SG13 7GX United Kingdom Phone: (+44) 1920 358990 Fax: (+44) 1920 358991 Website: http://kehui.com...
- Page 2 Legal Notices The copyright of this material belongs to Kehui International Ltd. No company or individual may extract, copy or translate this material in any way without the written permission of the copyright owner. This product complies with the design requirements for environmental protection and personal safety.
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Page 3: Table Of Contents
COMPOSITION AND APPLICATIONS ................... 8 Data acquisition unit ........................ 8 Display unit ..........................9 Cable sheath fault test ......................12 Cable main insulation fault test ..................... 16 Battery charging ........................19 PACKING LIST - T-H200 ......................20 T-H200 User Manual Version 1.2 | 3... -
Page 4: Safety Instructions
Safety Note: This user manual is the basic commissioning and on-site operation guide for the T-H200. Users should read the entire contents of this manual before operating the device. The manufacturer of this product is not responsible for any loss caused by the operator's failure to comply with the operating procedures described in this manual or for any contravention of safe working procedures. -
Page 5: Introduction
Introduction The T-H200 DC Resistance Cable Fault Locator, uses the advanced DC resistance method to locate external protective sheath faults and main insulation faults on power cables. It is designed for use with a high voltage generator and comprises a signal acquisition unit and an Android smart tablet, which acts as the user interface. -
Page 6: Model Number Nomenclature
Therefore, failure of the protective layer of a high voltage single-core cable, known as a sheath fault, is a common fault phenomenon. T-H200 User Manual Version 1.2 | 6... -
Page 7: Dc Resistance Method
The DC resistance method can be used to test the resistance of the main insulation and the protection layer. The T-H200 uses this principle to find faults on high-voltage cable sheaths and the main insulation which exhibit low grounding resistance, and joint failure. -
Page 8: Composition And Applications
Auxiliary wire (black), connected to the healthy cable − Faulty shield (yellow), connected to the faulty cable shield − High voltage (red) connected to the high-voltage generator (e.g. Kehui T-100C) − Faulty shield (green). connected to the faulty cable shield (together with the yellow lead). -
Page 9: Display Unit
This should result in the screen shown in (ii). Do not touch the screen until advised below (i) Figure 4.4 – Tablet boot-up - i • This screen will remain for about 30s while the unit boots-up. T-H200 User Manual Version 1.2 | 9... - Page 10 -iv PIN Code • Put in the PIN number (initially 1234) using the touch screen and press ✓ , the screen changes to (v), with the Kehui T-H200 APP highlighted. Figure 4.8 – Tablet boot-up – v APP Icon...
- Page 11 4.2.3 Turning on the T-H200 The T-H200 unit can be turned on or off by pressing the power on/off switch on the front panel. The detector power indicator lights up when the detector is turned on. [Warning] The battery must be charged using the dedicated charger. Using other chargers that do not meet the exact parameters, may cause damage to the instrument.
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Page 12: Cable Sheath Fault Test
Select the Bluetooth settings (usually in “Device Connectivity”), ensure Bluetooth is activated and that the device is visible. If the T-H200 is switched on, it should appear as an available device and tapping on the T-H200 device name will bring up a password request. - Page 13 After entering the screen shown in Figure 4.18, the interface will show the precautions for HV operation. It will display the "Test current" and "Test voltage" values in real time, and the instrument will automatically calculate the "full length resistance". T-H200 User Manual Version 1.2 | 13...
- Page 14 “resistivity” automatically, and store the value for the next stage of operation. Note that the T-100C is the preferred power source for the T-H200, however it will also work with other suitable high voltage sources and can be powered from the Kehui T-305E surge generator, used in DC mode.
- Page 15 Connect the rest of the set-up following the colour scheme of the connection diagram. Second Step: fault distance measurement Slowly increase the DC HV voltage on the HV generator (e.g. Kehui T-100C) until the test current is approximately 50 - 80mA. In the screenshot shown in Figure 4.21, the "Test current"...
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Page 16: Cable Main Insulation Fault Test
The operator interface shows the connection diagram for the resistivity test (Figure 4.22). The colour scheme of the diagram should be followed precisely using the different coloured connectors provided. Figure 4.18 - Main insulation resistivity test connection diagram T-H200 User Manual Version 1.2 | 16... - Page 17 HV operation. It will display the "Test current" and "Test voltage" values in real time, and the instrument will automatically calculate the "full length resistance". Figure 4.19 - Resistivity measurements 43.87 5059 115.4 0.4865 T-H200 User Manual Version 1.2 | 17...
- Page 18 Connect the auxiliary line (a healthy cable core) and the faulty core at the remote end together. iii. Connect the rest of the set-up according to the colour scheme of the connection diagram T-H200 User Manual Version 1.2 | 18...
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Page 19: Battery Charging
If the battery is not recharged, further usage will eventually cause shut-down of the instrument. Always ensure that the charger supplied by Kehui for this device is used to charge the battery Due to airline regulations, the unit may be shipped with the battery disconnected. -
Page 20: Packing List - T-H200
T-H200 Sheath Fault Locator (data acquisition unit) Tablet with charger Grounding Clamp 8.4V 2A Charger Test Lead Manual Kehui International Ltd is a company registered in England and Wales with Company Number 10283200 T-H200 User Manual Version 1.2 | 20...