Underground HV and EHV network operators can now get faster and significantly more reliable information about the quality and the condition of their cables.Cable testing and diagnostics provides information about the cable’s condition and will reveal localised problems, such as poor joints and terminations; it will also reveal localised weak spots in the insulation. Generally VLF waveform, which is ideal for commissioning tests, there is also the option of generating a DAC voltage. Adiradh Energy Offers Megger make HV cable Test and diagnostic systems TDS NT,TDM45, MV DAC30, EHV cable Test and diagnostic systems HV DAC Series ,Online PD Scanner PD Scan, Online PD Substation Surveying System UHF PD Detector, Partial Discharge Tester PD LOC, Partial discharge detector TE PDS.
Overview of TDS NT
In addition to the proven VLF and DAC test voltage the TDS can also be used for DC tests and sheath tests in compliance with IEC 60229.It can be used to test cables according to the international standards (e.g. IEC 60502-2 and IEEE 400.2) with VLF-CR. In addition, a PD diagnosis using the new 50 Hz Slope Technology, can be performed simultaneously with the help of the PD detector. Alternatively, the TDS NT can also be used for PD diagnosis with the proven damped AC voltage (DAC).
PD Detector PDS 60 Features
PDS 60 has become possible to immediately locate faults in underground cables during the actual PD measurement.PD detector software will support the user with the data evaluation by means of so called Phase Resolved Partial Discharge (PRPD) patterns. With help from these PRPD patterns the user is able to distinct between different types of PD defects, such as corona or internal PD. This is of major importance for partial discharges located at terminations; corona discharges are not problematic, where-as internal PD would.
Adiradh Energy offers Cable testing and diagnostics TDS NT in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities
Brochure for Cable test and diagnosis system TDS NT
Adiradh energy offers TDM 45 series which is a revolutionary breakthrough in testing and diagnosis of MV cables. The modular concept allows the engineer to individually set-up the unit based on the type of job that needs to be executed. If e.g. withstand testing on short cable lengths need to be performed then only one module is needed. When part of the task is also to perform a partial discharge diagnosis then an additional module is needed.
Overview of Cable test and diagnosis system-TDM45
TDM45 have three modules depending on user application has to select
TanDelta Diagnostics
Partial discharge diagnosis
Adiradh Energy offers Cable testing and diagnostics TDM45 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities
Brochure for Cable test and diagnosis system TDM45
MV DAC30 is a 30 kV Damped AC (DAC) cable test set with Partial Discharge (PD) diagnostic capabilities. It can be used detect and map PD activities in real-time for immediate evaluation of test results. It is the first system in the world to integrate both the power source and PD coupler into a single portable unit. This revolutionary design eliminates operator and environmental exposure to high-voltage potential, ensuring the highest level of electrical safety.
Overview of MV DAC30
Adiradh Energy offers Cable testing and diagnostics MV DAC30 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities
Brochure for Cable test and diagnosis system MVDAC30
Adiradh Energy offers HV DAC series which is designed for after-laying testing on newly installed HV-cables as part of quality control, and for condition assessment on repaired or service-aged HV-cables.The key benefit of this test set is the compactness versus testable capacity. With this transportable unit, cables with a length up to 32 km can be tested. In addition set-up within a substation is also no problem; no more roadblocks needed compared to using resonance test sets on large trucks. As of its portability and short set-up time it is possible to quickly respond on changing weather conditions. Because of its low weight there are no special requirements needed for road conditions. Air transport is also no problem, keeping transport times to a minimum and maximising the efficiency in use of the system.
The test set incorporates a partial discharge (PD) detector, allowing monitoring the quality of workmanship and the condition of the cable. The PD measurement system is state of the art with live evaluation, localization and display of results. Maintenance activities can be directly planned during the actual measurement. All data is stored in a powerful cable data base, where data can be easily accessed again, and reports printed.
Overview of HV DAC 300
■ Designed for testing and diagnostics on cables rated up to 230 kV
■ Multifunctional: cable withstand testing & PD Diagnosis in a single system
■ Allows a monitored commissioning test acc. to IEC 62067 and IEEE 400.4
■ Highly adaptable thanks to the portable design
Stages of Testing
Manufacturing :Testing done with 50Hz power source/Impulse.
On Field :Installation Testing and Acceptance Testing
In Service Life : After Repair, as Maintenance Test.
Today’s practices for commissioning testing on EHV cables
HV DAC testing with PD-measurement:The HV DAC testing has, based on its advantages, won on popularity. The frequency of the test voltage is depending on the cable length between 20 and 300Hz.All available DAC test systems are equipped with a PD Detector.
HV DAC Technology
Cable Sheath Integrity mandatory Testing Test while commissioning of EHV Cables
To determine the healthiness of Cable Sheath after installation. Method: Application of 10KV DC on sheath with respect to ground for a duration of 60sec. Leakage current is monitored and it should be within allowed limits.
Proof Test/ Withstand test. Purpose
Partial Discharge Measurement Purpose To check the quality/workmanship of cable insulation, Joints and Termination and to identify weak spots to repair it before energizing. Partial Discharge measurements are carried out by applying DAC voltage according to Partial Discharge measurements are carried out by applying DAC voltage according to technique and IEEE400.3
For the decision making process the measurement data is the most important part: PDIV vs PDEV
PDIV (Partial Discharge Inception Voltage)
In general: the lower the PDIV is, the more critical the PD affected spot should be considered • For PILC: PDIV has to be monitored over time – PDIV remains constant: good sign – PDIV decreases: sign of ageing
PDEV (Partial Discharge Extinction Voltage)
Only of importance if PDIV > U0 • If PDEV < U0, then there is a high chance that the PD is always present at operating voltage
Adiradh Energy offers EHV Cable testing and diagnostics in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities
Brochure for Test and diagnostics system for EHV cables
2019 - Industry. All Rights Reserved.