Dual Canopy Mechanic Electrical Engineering Co., Ltd. is one of the leading manufacturers and suppliers of 10kv fully automatic transformer dielectric loss tester in China. Please feel free to wholesale discount products for sale here and get quotation from our factory. Customized orders are welcome.
What is a 10kV fully automatic transformer dielectric loss tester?
10KV Fully Automatic Transformer Dielectric Loss Tester is a professional-grade insulation diagnostic instrument designed for accurate measurement of dielectric loss tangent (tan δ) and capacitance in power transformers, bushings, capacitors, current transformers (CT), potential transformers (PT), and other high-voltage electrical equipment. This fully automated tester integrates advanced variable frequency anti-interference technology, delivering reliable and stable test results even in substation environments with strong electromagnetic interference up to 200%.
Our dielectric loss tester represents a breakthrough in traditional bridge testing methods. By adopting state-of-the-art variable frequency power technology, single-chip microcomputer control, and modern electronic signal processing, the instrument achieves automatic frequency conversion, analog-to-digital conversion, and intelligent data computation-all in a single portable unit.
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Why choose our dielectric loss tester?
Designed in accordance with IEC 60247 and IEC 61620 international standards
Accuracy: Cx ±(reading × 1% + 1 pF), tan δ ±(reading × 1% + 0.00040)
Maintains the specified accuracy even in environments with 200% interference
Widely used in the power industry for testing equipment such as transformers, instrument transformers, and bushings
What are the main application areas?
Our 10kV Dielectric Loss Tester is specifically engineered for dielectric loss measurement of critical power system components.
| Test Object | Application Description |
|---|---|
| Power Transformers | Winding insulation condition assessment; detects insulation oil aging and moisture ingress |
| High-Voltage Bushings | Capacitive bushing dielectric loss detection; prevents bushing failures |
| Current Transformers (CT) | Insulation integrity testing; ensures reliable protection device operation |
| Potential Transformers (PT/CVT) | Insulation diagnosis; simultaneous C1 and C2 capacitance measurement |
| Power Capacitors | Combined capacitance value and dielectric loss measurement |
| Metal Oxide Arresters | Regular insulation performance inspection |
| Insulating Oil | Precision dielectric loss testing with dedicated oil cell |
| Solid Insulation Materials | Laboratory insulation material performance evaluation |
Which industries is it used in?
Electric Utilities - Grid substations, transmission and distribution networks
Power Plants - Generator step-up transformers, auxiliary transformers
Industrial Manufacturing - Incoming power quality verification
Transformer Maintenance - Preventive maintenance programs
Electrical Equipment Testing - Manufacturing quality control
Research Institutions - Insulation material research and development
What are the testing environment requirements for the 10kV fully automatic transformer dielectric loss tester?
High-voltage substations with strong electromagnetic interference
Outdoor transformer installations in various weather conditions
Indoor testing laboratories requiring controlled environment
Field commissioning and acceptance testing
Routine maintenance inspections
Studies show that transformers subjected to regular dielectric loss testing exhibit a failure rate up to 50% lower than those that are not tested.
How can the accuracy of device data be verified?
Accuracy: Cx: ±(reading×1%+1pF)
tgδ: ±(reading×1%+0.00040)
Anti-interference indicators: variable frequency anti-interference, the above accuracy can still be achieved under 200% interference
Capacitance range: Internal high voltage: 3pF～60000pF/10kV 60pF～1μF/0.5k
External high voltage: 3pF～1.5μF/10kV 60pF～30μF/0.5kV
Resolution: Up to 0.001pF, 4 significant digits
tgδ range: unlimited, resolution 0.001%, automatic identification of three test products: capacitance, inductance and resistance.
Test current range: 10μA～5A
Internal high voltage: Set voltage range: 0.2～10kV
Maximum output current: 200mA
Boost/step-down mode: Voltage can be set at will. For example, 5123V.
Test frequency: 40-70Hz single frequency can be set at will. For example, 48.7Hz.
50±0.1Hz to 50±10Hz automatic double frequency conversion can be set at will.
60±0.1Hz to 60±10Hz automatic double frequency conversion can be set at will.
Frequency accuracy: ±0.01Hz
External high voltage: Maximum test current 5A for positive wiring, power frequency or variable frequency 40-70Hz
Maximum test current 10kV/5A for reverse wiring, power frequency or variable frequency 40-70Hz
CVT self-excitation method low voltage output: output voltage 3~50V, output current 3~30A
Measurement time: about 40s, related to the measurement method
Input power: 180V~270VAC, 50Hz±1%, AC or generator power supply
Computer interface: standard RS232 interface, U disk socket (automatic U disk storage data).
Printer: micro thermal printer Ambient temperature: -10℃~50℃ Relative humidity: <90%
Dimensions: 430×330×350mm Instrument weight: 28kg
Our address
Baoding Cloud Center, Hebei, China
Phone Number/whatsapp
+8613603329412
dylan@dualcanopy.com
FAQ
Q1: What is dielectric loss (tan δ)?
A: Dielectric loss (tan δ, also known as loss factor or dissipation factor) is a key diagnostic parameter for insulation systems. It represents the extent of energy loss in insulating materials when subjected to an alternating current (AC) electric field. The tan δ value increases significantly in the presence of moisture, aging, contamination, or localized defects within the insulation system.
Q2: Why is it important for transformer testing?
A: Dielectric loss testing is a non-destructive test method.
It allows for assessment while the equipment is in service.
It enables the early detection of insulation degradation trends.
It is more sensitive than insulation resistance testing and can detect subtle changes.
Q3: What is the difference between UST and GST test modes?
A: UST mode is typically used when testing transformer bushings.
GST mode is used when testing the insulation of transformer windings to ground.
Some equipment offers both UST and GST capabilities, allowing for selection based on specific needs.
Modern, advanced dielectric loss testers support both UST and GST modes and feature a GSTg (shielded GST) mode, which eliminates the effects of stray capacitance to provide more accurate measurement results.
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