The NARI JFD-2000A is a high-precision digital partial discharge (PD) detector designed for the insulation testing and condition assessment of high-voltage electrical equipment. By identifying and measuring discharge pulses, it allows for the early detection of insulation defects in transformers, GIS, cables, and motors, significantly improving power network reliability.

Technical Specifications

Feature	Specification
Model	JFD-2000A
Detection Sensitivity	$\le 1 \text{ pC}$ (depending on test loop)
Display Type	Large-scale LCD/Digital Waveform Display
Measurement Range	$1 \text{ pC}$ to $10,000 \text{ nC}$
Sampling Rate	High-speed digital processing
Weight	Approximately 8–10 kg
Dimensions	450 mm x 350 mm x 200 mm
Origin	China

Application Areas

• Transformers: Routine factory acceptance testing and on-site maintenance of power transformers.

• Gas Insulated Switchgear (GIS): Detection of insulation anomalies in SF6 gas-insulated equipment.

• High Voltage Cables: Analyzing insulation integrity in XLPE power cables and accessories.

• Rotating Machinery: Monitoring and evaluating the insulation health of large-scale generators and motors.

Product Usage Guide

1. Connection: Connect the discharge coupling capacitor to the high-voltage test object and input the signal to the JFD-2000A input port.

2. Calibration: Perform a system calibration using an external PD calibrator to ensure measurement accuracy across the specific test loop.

3. Observation: Use the device to observe the elliptical, linear, or sinusoidal scanning patterns of the discharge signal.

4. Data Analysis: Utilize the built-in digital filtering and magnification features to isolate genuine partial discharge signals from background noise.

5. Recording: Save test data and waveform screenshots to the device memory for subsequent report generation.

Frequently Asked Questions (Q&A)

Q: How does the JFD-2000A handle high-level background noise?

A: The device employs advanced digital filtering and phase-window gating techniques, which effectively suppress continuous power frequency interference to isolate actual discharge pulses.

Q: Is it suitable for field testing?

A: Yes, its portable and rugged design makes it ideal for both laboratory environments and on-site testing in substations.

Q: How often should the device be calibrated?

A: It is recommended to calibrate the device annually at a certified metrology laboratory to maintain measurement precision.

Recommended Stock Inventory

Item No.	Part Number	Description
1	JFD-2000A	Partial Discharge Detector Main Unit
2	JFD-CAL-100	PD Calibrator (Pulse Generator)
3	C-2000-CAP	Coupling Capacitor (Standard 100pF/50kV)
4	JFD-AMP-01	Pre-amplifier module
5	JFD-SH-05	High-voltage shielded coaxial cable (5m)
6	JFD-CONN-RF	Set of RF signal connectors
7	JFD-DATA-USB	Data export and communication cable
8	JFD-CASE-PRO	Rugged transit case
9	JFD-FILTER	Power frequency suppression filter
10	JFD-PRT-PAPER	Thermal printer paper/supplies