12kv Fully Automatic Performed Transformer Capacitance Tan Delta Tester
tgδ: ±(reading×1%+0.00040)
Anti-interference index: Frequency conversion anti-interference, the above accuracy can still be achieved under 200% interference
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Product Details of 12kv Fully Automatic Performed Transformer Capacitance Tan Delta Tester
Product Introduction
We always adhere to our tenet to provide excellent vlf high voltage generator, sf6 gas leak detector, on load tap changer tester with competitive prices and quality services. We are striving to build a brand with Chinese characteristics with our forward-looking vision and high-end positioning strategy. Looking forward to the future, we will base ourselves on the local market with newer and higher comprehensive services. We sincerely welcome customers and friends to visit our factory!
Product Introduction
The Transformer Dielectric Loss Tangent Delta Tester is an instrument specially designed for testing the capacity of standard distribution power transformers under low voltage and small current. Its main components include an LCD display, fuse box, grounding post, terminal block, etc. The Transformer Dielectric Loss Tangent Delta Tester is small in size and light in weight, with an integrated design that makes it easy to carry and operate in the field.
Features
HZ-2000H Transformer Dielectric Loss Tangent Delta Tester is sold well in the world market and worth recommendation for its excellent quality and reasonable price. Our tester can accurately measure the capacity of various distribution transformers with passive measurement, which is convenient and accurate. In addition, it comes with its own internal power supply and automatically generates three-phase high-power test power, which can measure no-load current, no-load loss, short-circuit voltage and short-circuit loss of various types of transformers.
Technical Index
Accuracy | Cx: ±(reading×1%+1pF) |
tgδ | ±(reading×1%+0.00040) |
Anti-interference index | Frequency conversion anti-interference, the above accuracy can still be achieved under 200% interference |
Electric capacity range | Internal high voltage:3pF～60000pF/10kV 60pF～1μF/0.5kV |
External high voltage | 3pF～1.5μF/10kV 60pF～30μF/0.5kV |
Resolution | Up to 0.001pF, 4 significant digits |
Range of tgδ | Unlimited, resolution 0.001%, automatic identification of three types of test samples: capacitance, inductance and resistance. |
Test current range | 10μA～5A |
Internal high voltage | Setting voltage range 0.5～10kV |
Maximum output current | 200mA |
Buck-boost 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 |
High voltage applied externally | The maximum test current is 5A during positive connection, power frequency or frequency conversion 40-70Hz. Maximum test current when reverse wiring is 10kV/5A, power frequency or frequency conversion 40-70Hz |
CVT self-excited low voltage output | Output voltage 3～50V, output current 3～30A |
Measuring time | About 40s, related to the measuring method |
Input power | 180V～270VAC, 50Hz±1%, power supply from mains or generator |
Computer interface | Standard RS232 interface, U disk socket (automatic U disk storage data) |
Measurement Method and Principle
According to whether the tested product is grounded or not, there are two kinds of measurement methods, namely, the forward connection measurement method and the reverse connection measurement method. The principles of the two measurement methods are shown in figure 1:
At the 10kV side of the high-voltage power supply, the high-voltage power supply is divided into two channels, and the first channel feeds the standard capacitor CN inside the machine. The dielectric loss of this capacitor is very small, which can be considered as zero, i.e. pure capacitive current. This current ICN can be used as the capacitive current reference. On the Cx test side, the test current Icx is collected into the machine through the sampling resistance R. The Icx can be decomposed into horizontal and vertical components, as shown in figure 2. tgδ value can be obtained by calculating the ratio of the horizontal and vertical components.
In FIG. 1 (a), Cx is the ungrounded sample, and the sample current Icx enters the sampling resistance R from the sample end to obtain the full current value. In FIG. 1 (b), Cx is the grounding sample, the Cx end of the machine is directly grounded, and the current Icx obtains the full current value from the high-voltage end of the sample to the sampling resistance of the machine.
The 12kv Fully Automatic Performed Transformer Capacitance Tan Delta Tester is independently developed by our's own R&D team since we owning industry-leading core technology. We have passed various authoritative certifications and won many national honors. Our company caters to the needs of the market and continuously develops and manufactures more high-quality, cost-effective products for customers.
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