It is suitable for partial discharge (electric pulse method) measurement and analysis of high-voltage electrical equipment such as transformers, transformers, cables, GIS, bushings and motors with various voltage levels.
Functional characteristics of ED2 102 series digital partial discharge detector
◆ Technical level
The overall performance has reached the world's leading level and can compete with any of the most advanced similar products in the world.
◆ Measurement function
It can detect related parameters of partial discharge, such as amplitude, polarity, phase, frequency, starting voltage and extinguishing voltage.
◆ Anti-interference
Spectrum processing is based on ultra-high-speed DSP chipset and FFT algorithm, which can filter out more than 90% non-discharge interference. Comprehensive interference can reduce interference by more than 60%. The spectrum loss rate of implementing the above anti-interference measures is ≤3%.
With the support of correlation detection unit, synchronous blanking can realize synchronous filtering of strong interference from air, ground network and test power supply.
Phase windowing blanking can be done by windowing blanking for many times at any specified phase (opening the reflection window), shielding the interference of the specified phase, or measuring for the specified phase domain.
◆ Time Window (Atlas)
Elliptic, linear, sinusoidal, two-dimensional and three-dimensional partial discharge diagrams can be provided, which can directly and comprehensively observe and analyze the characteristics of various discharge frequencies, phases, intensities and test voltages during the test.
◆ Frequency window (map)
Provide real-time spectrum, and clearly observe the frequency characteristics of partial discharge signal and interference signal. It provides an effective means for distinguishing partial discharge from interference, determining the starting voltage and extinguishing voltage of partial discharge, and evaluating the influence of filtering measures on partial discharge signals.
◆ Static analysis
The partial discharge spectrum of any period and time period can be intercepted, and any single discharge pulse can be measured and analyzed in detail to determine the discharge properties and discharge intensity.
◆ Synchronization and monitoring
With zero indication and phase resolution function; Internal and external synchronization modes can be selected at will; It can be automatically synchronized with external test power supply with any frequency; The external test power supply voltage can be monitored.
◆ Communication interface
Support USB port, U disk, LAN and other Windows-supported modes to communicate with the outside world and transmit test data, test reports and test graphics.
◆ Data record
It can record the whole process of partial discharge spectrum and related parameters, and has the functions of free playback, reproduction, analysis and printing afterwards.
◆ Low noise design
The overall noise-free design, instrument noise can be controlled below 0. 1PC.
◆ Multichannel characteristics
Each channel has its own independent signal modulation, A/D conversion, DSP algorithm processing, Ethernet interface and TCP/IP protocol. Channel expansion does not affect the processing speed of other channels and PCs, and supports remote real-time communication and remote real-time expert consultation.
◆ DC partial discharge
Continuously record the time and interval of discharge pulse; Provide charts and data of discharge pulse number, discharge amount and time distribution. (this function is limited to DC PD instrument ED2 102DE).
XGCE series intelligent battery discharge tester 1 set. This product adopts Bluetooth wireless cell monitoring technology, which avoids the complicated wiring mode of wired monitoring. Each wireless module can support 2V/6V/ 12V battery voltage monitoring. Each wireless monitoring module can monitor four cells simultaneously. Compared with the method of monitoring one battery voltage per module, the number of modules to be configured is only1/4 (only 6 monitoring modules are needed for 48V), which makes the wiring operation of wireless modules easier. Support off-line or on-line discharge test of multiple groups (up to 4 groups) of batteries, and test the actual discharge current of each group of batteries at the same time. (When testing multiple groups at the same time, an optional current clamp must be added.) The current can be continuously adjusted and automatically kept constant. During on-line discharge, the host shows that the total discharge current of the battery pack = the total current of the dummy load inside the host+the total current of the actual load. Because the total current of the actual load will change with the change of the online voltage during online discharge, the total current of the dummy load inside the host will be automatically adjusted to ensure that the battery pack is always discharged at a real constant current. If multiple batteries are tested at the same time, the host computer will display the actual discharge current of each battery in addition to the total discharge current. The turn-off threshold of battery voltage can be set in multiple parts. The battery voltage off threshold of ordinary capacity tester automatically defaults to one battery. When the voltage of any battery reaches the threshold, the host will stop discharging. However, this capacity tester can manually set the voltage of n batteries to reach the turn-off threshold before stopping discharging, so that many backward batteries can be found in a continuous discharge test. Multiple compact constant current expansion modules can be connected in parallel to meet the greater discharge current requirements, and the host can control the constant current modules to start and stop at the same time. The power consumption part adopts aviation alloy electric heating element, which has high electric heating conversion efficiency, high safety factor, small volume and light weight; Automatic calculation function of discharge current, built-in discharge coefficient of each hour rate, users can automatically calculate the required discharge current according to the nominal capacity of the tested battery and the required discharge hour rate. Intelligent menu operation, users can easily operate without training. 5.7-inch super-large touch screen: it adopts super-large touch screen, which can be clicked directly on the screen, concise and clear. All discharge parameters can be viewed during discharge, and the battery voltage histogram can be displayed. During the discharge test, the voltage of each battery is detected and displayed in real time, and the change track of the voltage histogram of each battery (which can display the initial voltage position and current voltage position of each battery) is displayed on the host screen, and the battery numbers and values with the highest and lowest voltages in a group of batteries are displayed in real time to avoid users' distraction. The preset function of discharge parameters allows up to 8 kinds of common discharge parameter settings to be preset. In many cases, it is not necessary to reset the discharge parameters, which is convenient for users to discharge and speeds up the test. Users can also modify the built-in pre-play parameters. Intelligent judgment program: ordinary capacity tester often stops the discharge process because the monomer test clip is artificially knocked off at the use site. This capacity tester can automatically judge whether the cell voltage is abnormal because the clamp falls off or reaches the stop threshold. If the clip falls off, it will remind the user to reconnect it without stopping the machine, making the test process smoother. 8M storage memory, which can store multiple groups of discharge data. Through the upper computer, management actions such as reading, viewing, analyzing and deleting historical traffic data can be realized. In the process of discharge, it can also be connected to a PC to receive discharge data in real time; After discharge, you can also copy the discharge data to a PC through a USB flash drive for analysis and generate a test report. Flexible power supply mode: AC and DC power supply modes are adopted, which are suitable for testing of various communication base stations and computer rooms. 2. Flexible data analysis software displays: battery voltage, battery internal resistance histogram, total voltage curve, current curve, capacity histogram, characteristic comparison chart, data table, etc. It has powerful capacity prediction function, which can predict the capacity of each monomer of the battery pack to be tested in a short time; The collected data are displayed intuitively on the screen in the form of histogram, report and curve, and can be partially enlarged and reduced for observation; EXCEL report can be automatically generated, which is convenient for sending or uploading test data.