Anti-interference dielectric loss tester | Detailed introduction of technical principles

A dielectric loss tester is used to evaluate the performance of electrical insulation materials. Its core principle is to measure the power loss tangent (tanδ) of the insulating medium under AC voltage.

When an AC voltage is applied to an ideal insulator, the capacitive current flowing through it leads the voltage by 90 degrees. However, actual insulating media have losses, causing the current lead angle to be slightly less than 90 degrees; this difference, δ, is the "dielectric loss angle." tanδ is equal to the ratio of active power loss to reactive power in the medium and is a key parameter characterizing the insulation's quality.

During testing, the instrument applies a high-voltage AC power (either industrial frequency or variable frequency) to the test sample. Using a bridge balance method (such as a Schering bridge) or a digital vector measurement method, it precisely measures the amplitude and phase difference of the voltage and current across the sample, directly calculating tanδ and capacitance. An increase in the tanδ value directly reflects an increase in power loss caused by overall insulation dampness, aging, or deterioration, making it a sensitive, non-destructive method for diagnosing insulation conditions. Anti-interference dielectric loss tester, dielectric loss (tan δ) tester, automatic anti-interference dielectric loss tester 10kV dielectric loss

1. Features CVT self-excitation method testing; single wiring; simultaneously measures the capacitance and tan δ of C1 and C2.

2. Features reverse wiring low-voltage shielding and high-voltage shielding functions; with CVT bus grounded, 10kV reverse wiring dielectric loss measurement of C11 can be performed without disconnection.

3. Features external voltage and external CN measurement functions; simultaneous forward and reverse measurement function.

4. Employs frequency conversion technology to eliminate 50Hz power frequency interference in the field; reliable data can be obtained even in environments with strong electromagnetic interference.

5. Overcurrent protection function; the instrument is not damaged when the test sample is short-circuited or broken down.

6. Includes standard capacitor and high-voltage power supply; facilitates on-site testing and reduces on-site wiring.

7. The instrument uses a large-screen LCD display; simple operation; the testing process is guided by Chinese character menu prompts.

8. The instrument's interface includes corresponding wiring diagrams, greatly simplifying wiring for the operator.

9. It features Chinese/English language switching functionality.

1. Operating Conditions: -15℃-40℃, RH＜80%

2. Anti-interference Principle: Frequency Conversion Method

3. Power Supply: AC 220V±10%, Generator Allowed

4. High Voltage Output: 0.5KV -10KV, in 0.1kV increments; Accuracy: 2%

5. Maximum Current: 200mA

6. Capacity: 2000VA

7. Self-Excited Power Supply: AC 0V-50V 15A

8. Single Frequency: 45.0Hz-65.0Hz, Adjustable

9. Dual Frequency: 45.0Hz, 55.0Hz, 47.5Hz, 52.5Hz, 55.0Hz, 65.0Hz, 57.5Hz, 62.5Hz

10. Resolution: tanδ: 0.1%, Cx: 0.1pF

11. Accuracy :

△tgδ: ±(reading * 1.0% + 0.040%)

△Cx: ±(reading * 1.0% + 1pF)

12. Measurement Range: tgδ has no limit

Cx 15pF < Cx < 300nF

10KV Cx = (Cx1 + Cx2 + Cx3 + Cx4) < 60 nF

5KV Cx = (Cx1 + Cx2 + Cx3 + Cx4) < 150 nF

1KV Cx = (Cx1 + Cx2 + Cx3 + Cx4) < 300 nF

CVT Test Cx = (Cx1 + Cx2 + Cx3 + Cx4) < 300 nF

Dielectric Loss Tester, Dielectric Loss Angle Tester, tanδ Test Kit, Dielectric Loss Test Kit

MS-101G1 Anti-interference Dielectric Loss Tester, Dielectric Loss (tanδ) δ) Tester, Automatic Anti-interference Dielectric Loss Tester