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Measuring Instruments
/ Automatic C & Tand Bridge ( Model : MLS-11DA 200mA & HLS12A) |
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Automatic C & Tand Bridge |
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Model : MLS-11DA 200mA & HLS12A (Front Panel Controlled) |
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Automatic Capacitance & Tan d Test
Set
This set includes Bridge Model:MLS11DA & HV Supply model :HLS12A , Touch-screen
controlled & necessary cables & very flexible, user friendly Visual C++ windows
based Software. The use of Touch-screen & Windows
based software makes the system more flexible easy to handle & accurate Data can
be stored, Retrieved and analyzed at site.Temp correction for the tan delta of
object is automatically done as per IEC.
Suitable for equipments installed in EHV switchyard such as Bushings of
transformers & reactors, Current Transformers, Capacitor Voltage Transformers,
Grading Capacitors, Windings of Transformers, Windings of
reactors. |
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FEATURES |
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- Automatic Measurement of Capacitance & Tand as per the test plan
by auto-balancing .No need of manual balancing. Automatic voltage
setting through software as per test Plan.
- Safety features Open ground Indication.
- Data logging with graph of voltage vs. Tand to know the tand gradient & data
analysis for comparison with old results / manufacturer's data.
- Temperature correction as per IEC for
Tand.
- Controls on front panel , totally controlled by Touch-screen.
Executes all the test
modes/voltage automatically once fed
- Automatic Interference suppression make it suitable for
extraneous conditions
in 400KV switchyard.
- Unlimited Data-storage in Laptop
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MEASUREMENTS |
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The system will provide following Information.
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PARAMETER |
RANGE |
RESOLUTION |
ACCURACY |
| CAPACITANCE |
1pF – 1.1 uF |
0.1pF |
± 0.5% of the reading
± 2pF ( UST )
± 6pF ( GST ) |
| TAN DELTA |
0% - 200% |
0.01% |
± 2% of the reading ± 0.05% |
VOLTAGE
Measurement |
500V – 12 KV |
0.01 KV |
± 1.5%, ± 2digit |
CURRENT
Measurement |
0 – 200 mA |
1mA |
± 1 %, ± 2digit |
Test Set Also Provides Information on:
Power Factor, Watt Loss, Line Frequency, Apparent Power, True Power, Reactive
Power.
External Temperature & Humidity Meter is provided with the equipment .
External USB Printer is provided for Test Report Printing.
Test Report will have Date & Time stamped. Analysis Software :
Windows based analysis software for Tand Vs Time, Tan
d Vs Voltage.
Temperature Range : 00C to 500C
Humidity Range : 0 to 90 % non condensing
Calibrator Box
Calibrator Box with calibration certificate having capacitance 10000 pf with 4
Tan delta Taps is provided with the kit for On site calibration.
With built in 100 pF capacitor.
Standard Capacitor : Standard Capacitor is in built into the HV power
supply.
Capacitance : 100 pf ± 0.5%, Actual value is indicated on capacitor.
Tand : Less than 0.0001
Test Voltage : Up to 10 KV RMS.
Max. Voltage (1 Minute) : 14 KV RMS.
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TECHNICAL SPECIFICATIONS FOR HIGH VOLTAGE POWER SUPPLY |
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Test Voltage 0 to 12 KV
Rated Current 100mA Continuous & 200mA( 15 minutes ON & 15 minutes OFF)
Output Frequency 50 Hz ( Lines Frequency )
This power capacity is adequate for capacitance up to 50,000pF around 10 KV and
other capacitances at reduced voltages
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 them stray capacitances and separating
them from basic measurement in GST mode.
Indication : 3 ½ Digital Panel Meter.
Standard capacitor : 100pF 12KV built-in.
Input Frequency : From 50 Hz ( lines frequency) , ± 5%.
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 |
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| To keep pace with the latest technology
Sivananda Electronics reserves the right to update it's system.
Hence, information in the brochure is likely to change without
notice. |
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Sivananda Electronics 
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