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Function Description
① LCD display: used for Chinese character display, guiding operation, and intuitive reading.
② Fuse box: protects the instrument for normal operation.
③ Grounding terminal: connects to the earth to ensure personal safety.
④ Panel printer: prints measurement results.
⑤ Terminals for measuring transformer capacity and active load.
⑥ Terminals for measuring transformer no-load and load loss.
⑦ External 220VAC power socket, used when charging or using external power supply.
LCD Panel
The LCD display interface mainly has eleven screens, including the main menu and ten function interfaces, which are described in detail below.
Main Menu Interface
The main menu has ten options: Capacity Test, Parameter Settings, Active Load, Single-Phase No-Load, Three-Phase No-Load, Single-Phase Short Circuit, Three-Phase Short Circuit, Result Query, Electrical Parameters, and Harmonic Analysis. When the cursor points to a function option, that option is displayed in reverse color. As shown in Figure 4, the selected item is the 'Capacity Test' function. Use the up, down, left, and right keys to change the selected option. At this point, press the OK key to enter the selected function display screen. The bottom line is the prompt line, showing the current date and time, the internal battery voltage amplitude, and the remaining battery percentage, so you can promptly know the instrument's battery status and whether it needs charging to avoid being unable to work on site due to lack of timely charging.
Product Features
1. The instrument has an ingenious circuit design, unique concept, superior performance, and powerful functions, fully meeting the requirements for on-site distribution transformer capacity testing.
2. The instrument uses advanced A/D synchronous AC sampling and digital signal processing technology internally, making operation simple, wiring convenient, and data accurate and reliable, solving the problem of distribution transformer capacity testing, and can display and print measurement data of interest to users.
3. The instrument is mainly used for capacity testing of distribution transformers. The built-in test power supply can complete capacity tests for 100 units of 2500KVA and below distribution transformers on a single charge.
4. The human-machine interface of the instrument uses a blue screen (240 * 128) full Chinese character graphic display, with strictly hierarchical menus that guide you step by step through the test. You only need to power on, press any key, and the menu provided by the instrument will guide you through the required test. Using this instrument can greatly improve work efficiency and reduce labor intensity.
Test Applications
Measurement of transformer capacity, no-load current, no-load loss, short-circuit voltage, and short-circuit (load) loss
Working power supply Input voltage 185Vac～250Vac
Allowable input voltage 85Vac～264Vac
Frequency 50/60Hz
Input power 40VA
AC voltage range 10～650V
Resolution 0.001V
Accuracy 0.2%±0.001V
AC current range 0.5～60A
Resolution 0.001A
Accuracy 0.2%±0.001A
Resolution 0.001Hz
Accuracy 0.2%±0.001Hz
Power range 0～39kW
Resolution 0.001kW
Accuracy ＜±0.5%(CosΦ＞0.1)，±1.0%(0.02＜CosΦ＜0.1)
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
