NRDQ Series Automatic Capacitance Bridge / Inductance / Current Tester

NRDQ Series Automatic Capacitance Bridge / Inductance / Current Tester

Classification: Measurement Product/Secondary Circuit Test

Reference standard: GB3983,DL/T840-2003

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction
At present, China 's power distribution system is generally not neutral point directly grounded , so when the line is single- phase ground fault current flowing through the actual line -to-ground capacitance is the capacitance current. According to statistics, the distribution network failure is largely due to line single-phase ground when the capacitor is too large to be caused by self- interest arc . Thus, China's electricity Statutes 10kV and 35kV system when the capacitor current is greater than 30A and 10A, respectively , shall be equipped with arc suppression coil to compensate for capacitive current , which requires current distribution network capacitance measurements to make a decision. In addition, the distribution network to ground capacitance and the PT will generate parameter with PT ferroresonance over-voltage , in order to verify that the distribution system will occur and what the nature of PT resonance resonance , it must accurately measure the distribution network for ground capacitance value. The traditional distribution network capacitive current measurement methods are single-phase metal grounding direct method , plus capacitance indirect measurement method, etc. These methods have come into contact with one device , so there is danger test , operate complex , efficient and low defects . NRDQ series Automatic Capacitance Bridge / Inductance / Current Tester, directly from the secondary side of the PT measuring capacitive current distribution network , compared with traditional testing methods , NRDQ series Automatic Capacitance Bridge / Inductance / Current Tester and one side without dealing with , which is not there is the risk of trial , without doing complicated security measures and wait for lengthy scheduling order , simply measuring line connected to the open delta PT clients can measure the capacitive current data . Triangular openings due from the PT was injected at different frequency test signal weak , so neither will relay protection and PT itself, have any impact , but also to avoid the 50Hz power frequency interference signals, while the output of the tester can be resistant to by 100V AC voltage , if the measurement system is single-phase ground fault occurs , will not damage the PT and tester, eliminating the need to make special security measures to make this work to become safe, simple , fast, and accurate test results , stable and reliable.
Alternative name
capacitance current tester, automatic capacitance current tester, capacitance current tester for distribution network
The Characteristics of the products
NRDQ-C Automatic Capacitance Bridge Tester
Products Characteristics

(1) automatic conversion range;

(2) test data storage 7168;

(3) Large LCD (320 × 240 LCD) display, Chinese menu operation prompts;

(4) the realization of waveform and measurement data processing with the screen display, making the testing process more intuitive;

(5) has set up, calibration and debugging features.

NRDQ-D Automatic Capacitance Inductance Tester
Products Characteristics

(1) automatic conversion range;

(2) test data storage 7168;

(3) Large LCD (320 × 240 LCD) display, Chinese menu operation prompts;

(4) the realization of waveform and measurement data processing with the screen display, making the testing process more intuitive;

(5) has set up, calibration and debugging features.
(6) With measurement workload is small, fast and simple, stable performance, accurate measurement, fault detection rate and so on. In addition, it also doubles as a measuring unit current CVT, lightning and other electrical equipment for measurement purposes, having a machine can effect.

NRDQ-Ⅰ Automatic Capacitance Current Tester
Products Characteristics

1. This device with LCD, Chinese menu, easy to operate, small in volume, light in weight, convenient to field test.

2. Easy to connect wire, high-speed to test, test results in high precision, reduce the labor intensity, improve the efficiency.

The parameters of the products

Project Parameters

Model

NRDQ-C Automatic Capacitance Bridge Tester

NRDQ-D Automatic Capacitance Inductance Tester

NRDQ-Ⅰ Automatic Capacitance Current Tester

Power supply
AC 220V±10%;50Hz;

Capacitance range

0.2μF~2,000μF;
-

Capacity range

5~20,000 kvar;
-

Accuracy

0.2μF ~ 2μF ± 1% of reading ± 0.02μF

±5% (capacitance≤90μF)

2μF ~ 2,000 μF ± 1% of reading ± 2 digits

±10%(90μF< capacitance≤120μF)
Measurement range total capacitance to ground
-
-
≤120μF ( three phases to ground)
Capacitance current
-
-
≤500 A(35kv system
Capacitance current
-
-
≤200 A(10kv system

The inductance range

-
1mH~9.99H 
-

Measurement accuracy

-

± 1.5% of reading ± 2 digits

-

The output measuring voltage

AC 26V/500VA;50Hz;
-
-

Display

Large LCD display screen full Chinese output, panel thermal printer


Ambient temperature


0℃~40℃
-10℃~50℃

Relative humidity

≤90% RH

The shape

370mm×370mm×220mm
370mm×370mm×220mm
310mm×300mm×170mm

Weight

16 kg
16 kg
10 kg

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)

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Product information