NR Series Automatic Anti-interference Pilot Frequency Dielectric Loss Tester

NR Series  Automatic Anti-interference Pilot Frequency Dielectric Loss Tester

Classification: Partical Discharge/AC DC hipot test set

Reference standard: DL/T962-2005,DL/T474.3-2006

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction

Automatic anti-frequency dielectric loss tester as a precision instruments, used for power plants, substations, to automatic measure the on-site high voltage electrical equipment dielectric loss tangent and electrical capacity. As it adopts inverter technology, that can ensure the measured accurately in the strong electric field interference. Automatic anti-frequency dielectric loss tester uses Chinese menu operation, the microcomputer automatical complete the whole process of measurement. Automatic anti-frequency dielectric loss tester also apply to workshops, laboratories, research institutes and high voltage electrical equipment tgδand electrical capacity. The instrument can use the positive and negative wired method to measure the grounded or ungrounded high voltage electrical equipment. Also can measure the tgδcapacitor voltage transformer and the main capacitor C1, C2 capacitance Inside the instrument equipped with a high-voltage step-up transformer, and take a zero closing, lightning protection and other security measures. During the test output 0.5KV ~ 10kV different levels of pressure, simple and safe to operate.

Alternative name

Dielectric loss tester, interference dielectric loss tester, automatic dielectric loss tester, different frequency dielectric loss tester, different frequency dielectric loss tester, interference dielectric loss tester, automatic dielectric loss tester,tan delta Tester,tan delta test equipment,tan delta test kit

The Characteristics of the products
AI-6000
Characteristics of the products

1,As it uses the inverter frequency technology, that ensure the accurate measurement of the strong electric field interference

2,The automatic anti-frequency dielectric loss tester uses Englishi menu operation, the computer  complete the whole process of measurement automatically.

3,The instrument also applies to workshops, laboratories, research institutes to measure high voltage electrical equipment and electrical capacity tgδ

4,The instrument can use the positive and negative wired method to measure the grounded or ungrounded high voltage electrical equipment. Also can measure the tgδcapacitor voltage transformer and the main capacitor C1, C2 capacitance

5,The instrument is equipped with an internal high-voltage step-up transformer, and take a zero closing, lightning protection and other security measures. During the testing, can output 0.5KV ~ 10kV different levels of voltage, simple and safe to operate

NR7000
Characteristics of the products

(1) The instrument adopts complex number current method to measure capacitance, dielectric loss and other parameters. The measured result is highly accurate and it is easy to realize automatic measurement.  

(2) The instrument adopts variable frequency technology to eliminate 50Hz power frequency interference. So a reliable data will be reachable even under the strong electromagnetic interference.  

(3) The instrument adopts large screen LCD . In the process of testing, Chinese menu prompt is visualized and easy to operate.

(4) The instrument is easy to operate and the measuring process is controlled by microprocessor. Once a suitable measuring method is selected, the data measurement will complete automatically under the control of microprocessor.

(5)The instrument is designed to be an integrated model with reference capacitor and HV power supply in it, enables site test measurement and reduces site wiring.

(6) Measurement accuracy of the instrument is very high, it can meet the requirements of oil dielectric loss measurements, so only equipped with a standard oil cup and dedicated test line can be realized oil dielectric loss measurements.

(7) The instrument is equipped with CVT testing function, which can achieve CVT self-exciting testing without external accessories and measure the capacitance and dielectric loss of C1 and C2 by at a time.

(8) GST measurement adopts ivddv technology and avoids unstable data provided by previous GST measurement.

(9) The instrument provides low voltage shielding function of GST. When the bus of 220kV CVT is grounded, dielectric loss measurement can be conducted for C11 without removing 10 kV GST.

(10) The instrument has a function of measuring high-voltage dielectric loss. It can carry out dielectric loss test with over 10kV with the help of voltage transformer or series resonance.

(11) The instrument has a ground-fault protection function. In case that the instrument is not grounded or grounded incorrectly, the instrument will refuse to enter into normal procedure and output HV. As for the over-current protection function, it will protect the instrument from damage when the tested object is in a short circuit or breakdowns.

(12) The instrument has a function of electric shock protection. When the instrument operator suffers an electric shock due to incaution, the instrument will cut off the HV immediately and thus ensure the security of operator.

NR8000
Characteristics of the products

1.Super large LCD display

It is quipped with a large screen (105mm × 65mm), the screen is divided into two parts, the left as a function of the menu area , the right is for the relevant status message alert, every step is very clear, operators is easy to use without professional training. One operation, the microcomputer will automatically complete the whole process of measurement, is the ideal equipment for dielectric loss measuring.

2.Mass storage data

It is equipped with an internal calendar and a large capacity memory chip, which can save the test results in chronological order , you can always view the history, and you can print out at any time.

3.Scientific and advanced data management

The data can be exported through U disk, and can be view, manage and generate report through our company special software on any PC machine.

4.Multiple test modes

The instrument can be used in many test methods, such as internal high-voltage, external high-voltage, internal standard, external standard, positive connection, reverse connection, self-excitation method and other modes. It can do high voltage electric loss test (voltage is more high than 10kV) under external standard and external high-voltage.

5.CVT test in one step

The instrument can also test the dielectric loss and capacitance of fully sealed CVT (capacitor voltage transformer) C1, C2, and achieve simultaneously test for C1, C2. The instrument can also test the CVT ratio and voltage angle difference.

6.The instrument can test CVT without removing high-voltage wire.

The instrument can test the loss value and capacitance value of CVT without removing high-voltage wire

7.Reverse connection shielding method

The instrument can adopt reverse connection shielding method to test the loss value and capacitance value of C0 upper end of CVT.

8.High-speed sampling signal

High speed sampling signal: the inverter and the sampling circuit of the instrument are all controlled by digital control, and the output voltage can be adjusted continuously.

9.Multiple protection is safe and reliable

the instrument has many protective measures such as input voltage fluctuation, output short circuit, over voltage, over current, temperature and so on. It ensures the safety and reliability of the instrument. The instrument also has a grounding detection function to ensure that no grounding equipment is not allowed to boost.

The parameters of the products
Technical parameters
Automatic Anti-interference Pilot Frequency Dielectric Loss Tester
AI6000
NR8000
Anti-interference principle
frequency conversion
Power supply
AC 220V±10%    Permit generator

High voltage output

Voltage
1KV∽10KV
0.5KV∽10KV    Per 0.1kV
Precision
5%
2%
Max current
140mA
200mA
Capacity
1000VA
1500VA
Self-excited Power
AC 0V∽30V
AC 0V∽50V/15A   45HZ/55HZ
45HZ/55HZ
55Hz/65Hz
Resolution
tgδ: 0.001% Cx: 0.1pF
tgδ: 0.001% Cx: 0.01pF
Accuracy
△tgδ:±( reading*1.0%+0.040%)
△C x :±( reading*1.0%+1.00PF)
Measuring range tgδ
No limit
Cx
15pF<Cx<100000 pF
15pF < Cx < 300nF

10KV
Cx<30000  pF
Cx < 60  nF

 5KV
Cx<60000  pF
Cx < 150 nF

 1KV
Cx<100000 pF
Cx < 300 nF
CVT test
Cx<100000 pF
Cx < 300 nF

CVT ratio range

×
10∽10000

CVT ratio precision

×
0.10%

CVT resolution ratio

×
0.01

Temperature

-15℃∽40℃

Relative humidity

RH<80%

Dimension (mm)

470(L)×320(W)×390(H)
430(L)×330(W)×330(H)

Capacity of storage

-
80 groups, support for U disk digital storage

Weight

30Kg
28 Kg


Item
NR7000 Automatic Anti-interference Pilot Frequency Dielectric Loss Tester
Accuracy  Cx ±(reading×1%+1pF)
tgδ ±(reading×1%+0.00040)
Anti-interference

Variable frequency anti-interference,the above accuracy can
be reached under 200% interference.

Capacitance 
range
Internal HV 3pF~60000pF/10kV  60pF~1μF/0.5kV
External HV 3pF~1.5μF/10kV  60pF~30μF/0.5kV
Resolution Maximum 0.001pF, 4 valid figures
tgδ range

Unlimited, 0.001% resolution, automatic identification for
capacitance, inductance and resistance.

Test current range 10μA~1A
Internal HV Setting voltage
range
0.5~10kV
Maximum output
  current
200mA
Boosting or 
dropping method
continuous stepless regulation
Test frequency  45、50、55、60、65Hz single frequency
45/55Hz、55/65Hz、47.5/52.5Hz automatic dual variable frequency
Frequency 
accuracy
±0.01Hz
External HV 

In case of UST, maximum test current is 1A, and power frequency 
or variable frequency is 40-70Hz.

In case of GST, maximum test current is 10kV/1A, and power 
frequency or variable frequency is 40-70Hz.

CVT self-exciting 
low voltage output
Output voltage: 3 ~ 50V, output current: 3 ~ 30A
Measuring time About 40s, depending on measuring method
Input power supply 180V ~ 270VAC, 50Hz ±1%, supplied by alternating current
 or generator
Computer interface Standard RS232 interface
Printer  WH-A7 mini-type thermal printer
Temperature  -10℃~50℃
Relative humidity <90%
Overall dimension 460mm×360mm×350mm
Weight 28kg


Power supply: AC110V/115V/120V/127V/220V/230V/240V optional
Input frequency: 50Hz/60Hz optional
Note: The users can select the corresponding power which based on their local supply voltage and frequency, and we will confirm it before the delivery (or inform us that the goods will be used in which country advance)

Related products
Product information

1.This instrument can only be used in the power-off equipment, other equipment may not power off; 
2.The instrument with a step-up device, you should pay attention to high-voltage lead insulation and personnel safety; 
3.The instrument should be grounded; 
4.Before using the instrument testing equipment, should testing the insulation on equipment; 
5.Make sure the equipment withstand voltage rate, correctly choose instrument boost stalls, to prevent equipment breakdown and damage; 
6.Special configurated high-voltage cable have been detected qualified before delivery, but should  away from the body and low-voltage measuring testing line; 
7.The input voltage is AC220V ± 10%, if out of range,may affect testing accuracy; the maximum input voltage is AC264V, exceeding this value will cause permanent damage, for that we are not responsible for warranty repair.
8.The printer may occur paper-jam in the handling process due to roll loose, just need to take out the roll and roll to tighten it, then put back; 
9.The instrument should pay attention to anti-moisture and anti-rattling; 
10. Generator power output neutral should be grounded, otherwise it will prompt grounding is incorrect.