GPM-8320/8330 Power Meter

GPM-8320/8330 is a digital power meter designed for power measurement of three-phase AC power supply, suitable for most of motor and electrical product measurement applications (GPM-8320 provides 2 modules, GPM-8330 provides 3 modules), the product test bandwidth up to DC, 0.1Hz~100kHz, 16bits A/D, sampling rate of 300kHz. 16bits A/D, 300kHz sampling rate, 5" TFT LCD display, 5-bit quantitative display, 25 kinds of power measurement parameters, as well as high precision measurement capabilities; and at the same time with waveform display (voltage/current/power) capabilities, integral measurement functions, harmonic measurement and analysis of all orders (50/60Hz). Measurement meets the requirements of IEC61000-4-7), external sensor input terminals, a variety of communication interfaces...etc., to assist users to achieve a clear, convenient and accurate power measurement, can be said to be the same level of products, full-featured and cost-effective power meter.

GPM-8320/8330 provides a variety of input voltage configuration wiring mode (1P3W/3P3W/3P4W/3V3A), the user can choose the wiring mode according to the needs of a specific wiring method of parametric measurement, and even efficiency calculations; In addition, the rated direct input voltage of 1000V, the input current of 20A, support for the smallest current gear to 0.5A (resolution of 0.1mA), power measurement resolution of 0.1mW, crest factor up to 3 (half-range up to 6 or 6A), voltage/current/power measurement capability up to (half-range up to 6 or 6A). 0.1mA), power measurement resolution of 0.1mW, crest factor up to 3 (half-range up to 6 or 6A), voltage/current/power measurement capability up to (± 0.1% readings ± 0.05% gear), and can be based on the selection of different measurement modes (AC + DC/ AC/ DC/ V-MEAN), to provide as many as 25 kinds of power measurement on the parameters, including voltage (Vrms), voltage (Vrms), power (Vrms), power (Vrms), power (Vrms), power (Vrms), power (Vrms), power (Vrms), power (Vrms) and power (V). Voltage (Vrms/ Vac/ Vdc/ Vmn/ V+pk / V-pk), Current (Irms/ Iac/ Idc/ I+pk/ I-pk), Frequency (VHz/ IHz), Power (P/ P+pk/ P-pk), Crest Factor (CFV/ CFI), Visible Power (VA), Invalid Power (VAR), and Power Factor (PF), Phase Angle (DEG), Total Harmonic Distortion Rate (THDV/ THDI), Maximum Current Ratio (MCR) in addition to the MATH calculation function. Therefore, it provides the best range and accuracy support for power consumption measurement of motors and electrical products.

The GPM-8320/8330 also takes advantage of the TFT LCD display to present parameter measurement results both numerically and graphically. In terms of numerical value, it provides general mode and multiple mode. General mode: it provides 4 tabs (page1~page4), each tab can display 10 measurement parameters (2 main measurements + 8 monitoring measurements), which can be combined by the user to present the results of the parameters measured from each module; Multiple mode: it can display the measurement results of three modules at the same time, which is especially suitable for the comparison of the measurement differences between modules, e.g. three-phase unbalance. Multiple Mode: The results of three modules can be displayed at the same time, which is especially suitable for the comparison of measurement differences between modules, such as three-phase imbalance, and this mode also provides four tabs, each of which can display eight measurement parameters. In addition to the graphic display, a simple oscilloscope mode is provided to present the three parameters of voltage/current/power as waveforms; in addition, the measurement and analysis of the harmonics of the measured signals can be presented as numerical values or bar graphs, which not only satisfies the need for accuracy and legibility in process testing, but also meets the needs of R&D, design, and quality verification of a variety of measurement applications.

In addition, the GPM-8320/8330 offers a full range of auxiliary measurement mechanisms/functions. For large voltage measurement, VT rate setting is provided for use with external Potential Transformer; for large current measurement, depending on the type of Current Transformer ~ Voltage Output or Current Output, if it is Current Output, it can be directly locked to the rear panel of the machine and used with CT rate setting for measurement; if it is Voltage Output, it can be measured through GPM-8320/8330. For current output type, it can be locked directly to the rear panel of the machine and measured with the CT-rate setting, while for voltage output type, it can be measured by the external current sensor input terminal (EXT1/EXT2) provided by the GPM-8320/8330. Auto shift can be customized to save unnecessary shift time. 10,000 pens of internal memory can be used to store measurement data according to the update rate set by the GPM-83320/8330 or user-defined time intervals for subsequent analysis.

In terms of data acquisition and storage, the GPM-8320/8330 provides a variety of communication interfaces RS-232C/USB device (virtual COM)/ LAN or optional GPIB, which allows users to write programs to read the measurement results according to their usage habits or to match with the existing system interface; the USB host, which supports the screen capture, internal record data access and firmware update of the GPM-8320/8330, is also available for the GPM-8320/8330. The USB host can support GPM-8320/8330 screen capture, access to internal records, and firmware updates. For external signal control or data logger, the GPM-8320/8330 also offers an optional Digital I/O (DA12) interface (factory-installed) that can be connected to external controllers, such as PLCs or data loggers, for automated measurement or long-time logging applications.