Automatic Capacitance & Tan d Test Set :

Useful for condition monitoring insulation tests for power sector equipments such as High Voltage (EHV) class Bushings, Windings of transformer (1/2/3 windings), shunt reactors, Current Transformer, Capacitor Voltage transformer (CVT), grading capacitors of Circuit Breakers, Surge Arrester and other electrical equipment at site automatically in a charged switch yard.

 This set includes Bridge Model:MLS11DA & HV Supply model :HLS12A, Laptop controlled as well as front panel controlled versions are available . Very flexible, user friendly visual C++ windows based software. The use of Laptop & Windows based software makes the system more flexible easy to handle & accurate data can be stored, retrieved and analyzed at site.

Colored Screen analysis & graphical plotting of Tan d Vs Voltage, Tan d Vs Time.

Complied IEC 61010,    ASTM D999,   EMI/EMC-EN-61326, IEC61000-4-3,   IEC61000-4-4,  IEC61000-4-5,  IEC61000-4-6, IEC61000-4-8,  IEC61000-4-11.

1. Automatic Measurement of Capacitance & Tan d as per the test plan by auto-balancing No need of manual balancing. Automatic voltage setting through software.
2. Indication of Leakage current.
3. Graphical representation of voltage vs. Tand to know the tand gradient & data analysis for   comparison with old results and  manufacturer's data.
4. Temperature correction as per IEC for Tand.
5. Executes all the test modes automatically.

6. ON site printout with USB printer.

7. Suitable for extraneous conditions in 400KV switchyard under heavyinduction.

8. More than 10000 Results Data-storage.
9. Optional feature available for line as well as generated frequency operation using generated frequency source with dual frequency operation software.
10. Optional feature for Leakage Reactance Measurement.
11. Kit is supplied with Temp. & Humidity Meter.
12. Automatic Interference Suppression.
13. High quality & cost effective indigenous design & easy availability of spares.

Test Voltage 0 to 12 KV
Rated Current 100 mA continuous, 200mA short term rated.
Rated Power 2.4 KVA Intermittent.
Output Frequency 50 Hz ( Lines Frequency )
This power capacity is adequate for capacitance up to 50,000 pF around 10 KV and other capacitances at reduced voltages. Automatic balancing through windows based software in Laptop No need of microprocessor based operation. Automatic selection of seven different modes of operation for measurement of 3 terminal object from windows based software .
1) UST - Ungrounded Specimen test - 3 combinations
This mode is used when the object under test is not grounded. This test provides most accurate results.
2) GST - Grounded Specimen test
This mode is used when the object under test is permanently grounded. This test is used more often in outdoor installations, power systems etc.
3) GSTg - Grounded specimen test with guard. 3 combinations.
This mode is used for measuring the stray capacitances and separating it from basic measurement in GST mode.
Standard capacitor: 100pF/200pF 12KV built-in.

Input Frequency: 50 Hz (lines frequency), ± 5%. Fixed generated freq. with optional source.

Power Required: 230 VAC ± 10%, 1 phase AC, 50Hz.

Safety Features:

· Zero start control

· Open ground indicating lamp with double grounded connection

· External interlock.

· HT cut off on overload

· HT ON & Supply ON indication.

· All operating controls at earth potential

· Necessary terminals & Sockets for connection to Bridge

Safety Specifications: IEC 61010 complied.

Vibration Suitability: ASTM D 999 complied.

EMI/EMC Specifications: Conducted & Radiated Emission EN 61326 complied,

Radiated SusceptibilityIEC61000-4-3 complied,

Electrical Fast Transients IEC61000-4-4 complied, 

Surge Test IEC61000-4-5 complied, 

Conducted Susceptibility IEC61000-4-6 complied,

Power Freq. Magnetic Field ImmunityIEC61000-4-8 complied,

Voltage dips / InteruptionIEC61000-4-11 complied.