## Dielectric Loss Tangent Testing Instruments

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### Stand-alone AC insulation test system

### C & tanδ Automatic Measuring Set for High Voltage Equipment

#### DAC-ASM-7

DAC-ASM-7 has been designed to perform dielectric dissipation factor (tanδ) measurement.The measurable Capacitance is from 100pF to 10μF, Tanδ from 0 to 100%, and Test Voltage can be

supplied from AC100V to 12kV (or 30kV). DAC-ASM-7 can measure grounded or ungrounded

specimen such as generators, motors, transformers, and insulating materials.

#### DAC-HAS-5

DAC-HAS-5 is available to the outgoing inspection of Insulators, Transformers, Bar Coils (HV Windings for Generators & Motors), etc.The capacitance and tanδ of high-voltage nongrounding equipment and insulation materials can be measured by using either of two Standard Capacitors; 100pF and 500pF.

Due to the high-speed automatic balance, DAC-HAS-5 is the most suitable device for the characteristic test with applied voltages on specimens, and also available to automation via a GPIB.

### Automatic Schering Bridge

#### DAC-ASM-5C

DAC-ASM-5C is the on-site measuring instrument of tanδ for High Voltage Power Cables.Consisting of two units; the Measurement and the Power Supply with AC 200V - 1000V, it enables to measure up to 15μF in capacitance of Power Cables.

You can average data in changing over the polarity of testing voltages to resolve the inducing effect in measurement.

### Micro tanδMeter

### Precision C and tanδ Meter

#### DAC-PSC-UA

DAC-PSC-UA enables to measure precisely tanδ of Power Cables, Insulation Materials, etc.This High Precision Measuring Instrument has the high resolution 0.0001% in tanδ, and is applicable to the wide-range measurement of capacitance from low to high (50pF - 1μF) at voltage from low to ultra-high (2kV - 600kV) by means of selecting the Standard Capacitors (50pF, 100pF, and 1000pF).

#### DAC-PSC-20W

DAC-PSC-20W gives automatically Capacitance and Dissipation Power Factor tan delta in a comparative measurement of a specimen and standard capacitor. The bridge is designed in electronic circuits and the measurement is so simple and quick that data can displayed digitally in a high resolution of 0.001% as tanδ and 0.01% as an error in capacitance from a nominal capacitance only by keying in some parameters on the front panel.### C &tanδ Meter for Insulation Material

#### DAC-IM-D6

DAC-IM-D6 enables to measure precisely the tanδ and capacitance (for evaluating insulation and permittivity) of liquids, films, papers, insulating tapes, and insulating plates in electrodes suitable for the size of them.The device, with a High-Voltage Testing Power and a Standard Capacitor, is available to the precision measurement of dielectric loss tangent (tanδ) in a high-resolution 1ppm.

### C&tanδ meter

### Automatic Insulation Testing Set

#### DAC-MAT-5

DAC-MAT-5 is a testing set for Insulation Diagnosis of Low-Voltage Rotating Machines. The set (6kg) enables to measure automatically Insulation Resistance, PI, and tanδ, and the data can be saved into memory.The stored data may be utilized to make a report by transfer via the PC software attached.

### High Frequency tanδMeter

#### DAC-HFM-1

With test voltage max 10kV, test frequency 50Hz to 20kHz, DAC-HFM-1 is the optimal high frequency tanδmeasuring instrument for permittivity characteristic examinations of insulating materials. Frequency characteristic test in high voltage and voltage characteristic test in high frequency are possible.### Low Frequency C and tanδ Meter

#### DAC-LFM-3

DAC-LFM-3 can measure tanδ and capacitance of test samples with a built-in very-low frequency power source 0.1Hz or 0.01Hz.This instrument can be used for various applications like,

Drying process control of oil-filled or mineral insulated cables,

Failure point identification of optical fiber submarine cables,

Insulation diagnosis of commercial frequency power cables.

### Hotline Insulation Diagnosis Equipment

#### DAC-HT-5

DAC-HT-5 is mainly for tanδ test of 6kV-class oil-immersed transformers energized.The adoption of DSP (Digital Signal Processor) allows the measuring set to be small and light in weight. And you can do the Insulation Diagnosis of Electric Power Distribution Equipment without interruption of service.

The set consists of the Testing Voltage Input PT, the Current Detecting CT, and the Measuring Part, and then the portability is excellent.

### CT&Cs with gas inside

#### DAC-CCB-6

DAC-CCB-6 is a CT&Cs Unit you can use in combination with the tanδ Measuring Instrument (DAC-ASM-7) in order to test tanδ up to AC30kV.The precision High-Voltage Transformer and Standard Capacitor are installed in the robust housing. Additionally Insulation Gas SF6 is included inside for miniaturization and weight saving. The unit provides High-Precision tanδ Tests.

### Standard Capacitor

#### DAC-Cs-101A

DAC-Cs-101A is a three terminal capacitor filled with SF6 gas.You can use it as the standard of Capacitance & tanδ for Dielectric Loss Tangent Tests.

There are also capacitive dividers and coupling capacitors to the other applications.

Specification

Rated Voltage:AC40kV 50/60Hz

Nominal Capacitance:100pF ±1%

tanδ：<0.001%

Filled Gas：SF6 gas 0.5Mpa(20℃）

Size and Weight：W428xH812(mm) 約45kg

#### DAC-Cs-102A

DAC-Cs-102A is a three terminal capacitor filled with SF6 gas.You can use it as the standard of Capacitance & tanδ for Dielectric Loss Tangent Tests.

There are also capacitive dividers and coupling capacitors to the other applications.

Rated Voltage:AC20kV 50/60Hz

Nominal Capacitance:1000pF ±1%

tanδ：<0.001%

Filled Gas：SF6 gas 0.2Mpa(20℃）

Size and Weight：W315xH708(mm) Approx. 31kg

#### DAC-Cs-103B

DAC-Cs-103B is newly created as the 10000pF Standard Capacitor for Dielectric Loss Tangent tests.The new electronic control method of Current Feedforward Compensation makes it possible, for the first time, to multiply 1000pF with the high-accuracy Standard Air Capacitor; therefore this product is a very stable standard capacitor with tanδ less than 0.002%.

### Capacitance Meter for High Voltage Equipment

### Tanδ Calibrator

### Liquid Electrode

### Liquid Electrode Heater

### Electrode for Insulation Material Test

#### DAC-OBE-7

DAC-OBE-7 is an electrode unit for testing Dielectric Loss Tangent and Insulation Resistance of Insulation Materials such as insulating papers and films according to JIS C2111.You can also use it on the measurement condition that immersed in oil baths, and it is designed to endure high temperature; max 120 deg C.