7820 Series

3 models:

7820-1: 30V to 1200V
7820-2: 100V to 5000V
7820-3: 500V to 10 kV

Overview

The WK 7820 Series Impulse Tester is designed to deliver high-performance impulse testing, ranging from a low voltage of 30V up to a high voltage of 10kV. With models offering single to eight channels, this series caters to a broad spectrum of testing requirements in the industry. Featuring a state-of-the-art 32-bit CPU and high-density SMD technology, the WK 7820 series provides precision and ease of use with its 7-inch TFT color display, enhancing user experience and operational efficiency.

Data Sheet

Technical Specification

Impulse voltage

WK 7820-1: 30V - 1200V, 5V steps

WK 7820-2: 100V - 5000V, 10V steps

WK 7820-3: 500V - 10kV, 20V steps

Voltage accuracy

WK 7820-1: ±(5% set value +5V)

WK 7820-2: ±(5% set value +15V)

WK 7820-3: ±(5% set value +25V)

Readback accuracy

WK 7820-1: ±(5% actual value +5V)

WK 7820-2: ±(5% actual value +15V)

WK 7820-3: ±(5% actual value +25V)

Inductance test range

WK 7820-1: ≥1uH

WK 7820-2: ≥10uH

WK 7820-3: ≥20uH

Impulse energy

WK 7820-1: Max.: 0.02 Joule

WK 7820-2: Max.: 0.25 Joule

WK 7820-3: Max.: 0.5 Joule

Test speed

WK 7820-1: 6 times/second

WK 7820-2: 6 times/second

WK 7820-3: 3 times/second (when 10kV impulse voltage is output)

Channels

1

Pulses applied

Max.: 32

Input Impedance

5MΩ

Display

800x480 dots, 65k color TFT; Waveform Display Range: 600x256

Waveform Acquisition

Sampling rate: Max. 200Msps, 8 levels adjustable

Resolution: 8 Bits

Memory Depth: 6k Bytes

Average: 1 to 32

Comparison Methods

Comparison with Standard Waveform:

● Area Size Comparison

● Differential Area Comparison

● Corona Discharge Comparison

● Differential Phase Comparison

Waveform Measurement

Voltage/Frequency/Time

Trigger Mode

Manual/External/Bus/Internal

Detection Output

OK/NG display/LED/ Alarm

Measurement Statistics

Statistics for measurement results

Memory

20 groups of standard waveform data and instrument setup can be stored in internal non-volatile memory.

USB flash memory can be used as external memory.

Interface

Handler, RS232C, USB Device, USB Host, LAN

Power supply

220V ±10% 50Hz/60Hz ±5%

Power consumption

≤200VA

Working Environment

Temperature: 0℃ - 40℃

Humidity: ≤75% R.H.

Safety and electromagnetic compatibility

IEC61010-1:2001,IEC61326-2-1:2005

Key Features

Versatile Voltage Range: Models in the WK 7820 series can test impulses from 30V to 10kV, accommodating a wide variety of testing scenarios.

High-Speed Performance: Achieves a maximum measuring speed of 6 measurements per second, with a waveform sampling rate of up to 200Msps, ensuring fast and accurate testing.

Advanced Corona Extraction: Incorporates a patent high-fidelity corona extraction algorithm, allowing for detailed analysis of the insulation properties of products.

Multi-Channel Testing: Offers configurations from 1 up to 8 channels, providing flexibility for tests requiring multiple simultaneous measurements.

Comprehensive Memory and Storage: Equipped with a storage depth of 6k Bytes and the capability to store 20 groups of instrument settings for efficient test setup and execution.
Flexible Interface Options: Includes RS232C, USB, LAN, and Handler interfaces for comprehensive connectivity and remote control capabilities.
Durable and Reliable Design: Ensures robust performance with features like foot control interface and system firmware upgradable via USB.

3 models:

7820-1: 30V to 1200V

7820-2: 100V to 5000V

7820-3: 500V to 10 kV