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The tunable resonating inductor is an essential accessory used in conjunction with Capacitance and Tan-Delta test sets to expand the capacitance range of the test sets. The tunable resonating inductor is connected in parallel with the internal power supply of the test set and the test object. Tuning the resonating inductor varies the inductance to tune the parallel circuit for minimum resistive load current to be taken from the source, while a majority of inductive current negates the capacitive current requirement of the test object.
The tunable resonating inductor is epoxy molded to avoid effect of atmospheric conditions on the insulation capacity of the coil. The body comprises of a welded steel frame with thick Aluminum panels designed to keep the weight low but withstand the rigors off field operation. TRI series can also be connected to HIPOT HV units, in similar configurations, with necessary changes in a few connections so as to be able to reflect correctly on the current measuring modules and overcurrent protection on the main units.
| Ordering Code | TRI-12-1 | TRI-15-3 | TRI-30-1 |
|---|---|---|---|
Application - Test object | < 11kV Cables Motors / Generators | < 22kV Long-run Cables Motors / Generators | Motors / Generators |
Application - Test types | C&DF test / HIPOT | C&DF test / HIPOT | HIPOT test |
Max test volage | 12 kV AC RMS | 15 kV AC RMS | 30 kV AC RMS |
Max object Capacitance (μF) | 1.2 μF {@ 50 Hz} 1 μF {@ 60Hz} | 3.6 μF {@ 50 Hz} 3 μF {@ 60Hz} | 1.2 μF {@ 50 Hz} 1 μF {@ 60Hz} |
Min object Capacitance (μF) | 0.06 μF {@ 50 Hz} 0.05 μF {@ 60Hz} | 0.12 μF {@ 50 Hz} 0.10 μF {@ 60Hz} | 0.06 μF {@ 50 Hz} 0.05 μF {@ 60Hz} |
Duty Cycle | 15 min ON, 45 min OFF | 15 min ON, 45 min OFF | 15 min ON, 45 min OFF |
Shielded HV Connector/Cable | YES / YES | YES / YES | NO / YES |
Dimensions (L×W×H) in/cm | 29"× 21"× 37" (74×53×94) cm | 30"× 24"× 42" (76×61×107) cm | 35"× 30"× 50" (89×76×162) cm |
Shipping Dimensions (cm) | 87×67×127 cm | 90×75×140 cm | 105×90×162 cm |
Net Weight (kg) | 172 kg | 207 kg | 245 kg |
Shipping weight (kg) | 225 kg | 255 kg | 285 kg |
Operating temperature | +5 to 50 °C | +5 to 50 °C | +5 to 50 °C |
Based on customer’s request, the equipment is supplied with connections such that the Inductor Return cable can be directly coupled to the following C&DF test sets.
Power Electronical HVTD series
Megger Delta4100 series
Megger Alpha 10 series
Doble M4000 series
Midas 2880/2881 series
Eltel ACTS-12K
For use along with Capacitance & Tan-Delta test sets & Hi pot test sets to expand range of measurements for large capacitance objects like Rotating Machines (Generators & Motors) and XLPE HV Cables
Reduces HV Power Source capacity needs by almost90%
Eliminates need for multiple fixed reactors in parallel and need for know-how of approximate capacitance before testing.
Provides optimum power balance
Designed to be compact and light-weight to be transported for field testing
Dual-spindle gear mechanism with auto balancers for variation mechanism ensures smooth operation through-out its usable life
Available in voltage variants of 12kV, 15kV and 30kV
Available for compensating Capacitances from 0.0SuF to 3uF
Indicator level indicates position of variable arm, and also approximate capacitance
HV-shielded cables and connectors, for safe operation.
Large heavy duty rubber lined wheels for noise-less movement thro shop floor.
Locking arrangement also provided
Resonating Inductor – 1 unit
Double Shielded HV cable 10m with shielded connector and heavy alligator clip – 1 no
Shielded LV cable 10m with end connector and heavy alligator clip – 1 no
Ground/ Earth cable 10m with end clip and small alligator clip – 1 no
User Manual & Test Certificate – 1 set
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