AC voltage and current series up to 54,000 VA ITECH IT7600

SHORT DESCRIPTION

Programmable Power Supplies ITECH IT7600 series - these are professional single-phase and three-phase sources of alternating voltage and current with the possibility of flexible control of the amplitude and shape of the output signals. The sources of this series use powerful digital signal processors (DSP), which allow you to form any signal with harmonic components in the range from 10 Hz to 5 kHz. In this case, the total power delivered to the load can reach 54 kVA. All models in this series include a built-in digital meter for output signal parameters, as well as an oscilloscope for visual control of their shape.

In addition to outputting AC voltage and current (AC mode), ITECH IT7600 series power supplies can generate DC voltages and currents (DC mode), and also provide output of signals containing both AC and DC components (AC+DC). With many innovative features and a wide range of output values, ITECH IT7600 power supplies are used in testing power plants, household and industrial electrical appliances, electric motors, generators and converters, widely used in alternative energy, as well as in many other areas where the ability to form single-phase and three-phase voltages with given parameters. You can download a full description of all the characteristics of the sources of the ITECH IT7600 series below on this page in the section Documentation.

Main characteristics:
Voltage: up to 300 V, current: up to 6 A, power: up to 750 VA, phases: one (model IT7622).
Voltage: up to 300 V, current: up to 12 A, power: up to 1 500 VA, phases: one (model IT7624).
Voltage: up to 300 V, current: up to 24 A, power: up to 3,000 VA, phases: one (model IT7626).
Voltage: up to 300 V, current: up to 72 A, power: up to 9,000 VA, phases: one or 3 (model IT7627).
Voltage: up to 300 V, current: up to 18 A, power: up to 13 500 VA, phases: 3 (model IT7628L).
Voltage: up to 300 V, current: up to 144 A, power: up to 18,000 VA, phases: one or 3 (model IT7628).
Voltage: up to 300 V, current: up to 36 A, power: up to 27,000 VA, phases: 3 (model IT7630).
Voltage: up to 300 V, current: up to 48 A, power: up to 36,000 VA, phases: 3 (model IT7632).
Voltage: up to 300 V, current: up to 60 A, power: up to 45,000 VA, phases: 3 (model IT7634).
Voltage: up to 300 V, current: up to 72 A, power: up to 54,000 VA, phases: 3 (model IT7636).
Operating modes: AC, DC, AC+DC. Possibility of parallel connection of sources.
Programmable output frequency: 10 Hz to 5000 Hz.
Built-in meter that measures: voltage, current, peak current, frequency, power factor, active, reactive and apparent power.
Generation of any form of voltage. Simulation of different power supply modes.
Programmable limits for limiting maximum current and voltage.
Control of the start and end angle of the phase shift in the range from 0° to 360°.
Overload protection voltage, current, power and overheating.
Interfaces: USB, Ethernet, IEEE-488.2 (GPIB), RS-232, CAN.
Weight: from 9.5 to 200 kg (depending on the model). Working temperature: from 0°С to +40°С.
The most functional series of AC voltage and current sources

Need compact source of alternating voltage and current? Watch the series ITECH IT-M7700.

Also, we recommend to see the full list of modern laboratory power supplies and detailed selection guide optimal laboratory power supply.

Video review of powerful AC voltage and current sources ITECH IT7600

This video overview shows the main features of the ITECH IT7600 series of powerful programmable AC voltage and current sources. The IT7600 series includes single-phase and three-phase models with maximum total power from 750 Volt-Amps to 54,000 Volt-Amps. The sources of this series can generate DC and AC signals with maximum frequency components up to 5000 Hz. After watching this video, you can get acquainted with the different models of this series, their main technical characteristics and design features.

DETAILED DESCRIPTION

The ITECH IT7600 series of powerful programmable AC power supplies was put into production in mid-2017. Many of its functions are based on a simpler series of single-phase sources. ITECH IT7300 which was released a year earlier. However, the IT7600 series has many important features that were not there before: the ability to work in three-phase mode, maximum output power up to 54 thousand Volt-Amps, adding a constant component to the output alternating signals (AC + DC mode) and many others.

Typical areas of application for IT7600 series sources include:
- stress tests of equipment with an unstable power supply;
- development and testing of inverters, AC-DC converters, uninterruptible power supplies;
- development of units for alternative energy (wind generators, solar panels);
- testing of single-phase and three-phase electric motors;
- testing of electrical transformers;
- testing of consumer electronics, including electromagnetic compatibility;
- imitation of various operating modes of the power supply network;
- Checking electric vehicle charging stations;
- Scientific research.

The rest of this page shows the main features of the ITECH IT7600 series. You can download a full description of all the characteristics of this series below on this page in the section Documentation.

Simulation of a three-phase power supply using ITECH IT7600 sources

The three lower models of the series (IT7622, IT7624 and IT7626) are single-phase, but by combining them into a system, you can form a three-phase output. Models IT7627 and IT7628 allow you to switch between single-phase and three-phase modes with a single button. And the powerful models IT7628L, IT7630, IT7632, IT7634 and IT7636 are fully three-phase.

Simulation of a three-phase network with a "star" and "triangle" connection scheme is supported. Depending on the task, any imbalance can be formed by changing the voltage amplitudes, their phases, adding a constant component, harmonics and all kinds of instabilities to any of the phases.

As an example of using this function, let's take a test of the on-board power supply systems in aircraft. ITECH IT7600 series programmable sources can generate test voltages in full compliance with industry standards ISO 1540-2006 and GJB 5189-2003, which allows you to test the operation of the aircraft power supply system in normal, abnormal and emergency modes.

Generation of voltages with harmonic distortion

A real electrical network almost always contains harmonics of the fundamental frequency. A small level of harmonic distortion usually does not adversely affect the operation of powered equipment. However, with a significant level of distortion, the normal operation of the equipment may be disrupted. To check resistance to such effects, it is necessary to carry out appropriate tests.

ITECH IT7600 AC power supplies provide the solution to this problem. They can generate signals containing various harmonic components in the frequency range from 10 Hz to 5000 Hz. This screenshot shows an example of the formation of such a voltage.

Simulation of an unstable power supply

A standard set of tests for electrical equipment usually includes a test to check the performance of various mains deviations. ITECH IT7600 AC voltage sources can generate a wide variety of such deviations: transients, voltage surges and dips, undervoltage, simulated short-term short circuits, etc.

Test kits according to the methods of major international standards, such as IEC 61000-4-11, are included as standard with IT7600 sources. This screenshot shows an example of the formation of seven periods of the fundamental frequency, in two of which a reduced voltage is formed.

Possibility to add a constant component

The ITECH IT7600 AC Power Supply Series can output AC voltage (AC mode), DC voltage (DC mode), and AC voltage with a DC component (AC + DC mode). This is a unique and very useful feature that has many practical applications, such as testing power semiconductor modules (triacs, thyristors, diodes, etc.) for resistance to large DC offsets. This screenshot shows the AC output waveform with 50 volts DC added.

List mode (LIST), step mode (STEP) and support for importing CSV files

To simplify the task of generating mains typical deviations as much as possible, the IT7600 variable sources support list mode, step mode, jump mode, dip mode, and also allow you to load any waveform from a CSV file into the instrument's memory.

In LIST mode, the IT7600 series source changes the state of its outputs according to a list of user-defined values. Each of the given values will be maintained for the required number of milliseconds.

In STEP mode, the output value (for example, amplitude or frequency) will change by the amount of the step after the specified number of milliseconds. For example, you can set the output voltage to increase by 10 volts every 5 seconds, starting at 100 volts and ending at 250 volts.

Surge mode (SURGE) allows you to superimpose many short-term surges (surges) on a sinusoidal output signal, which is used to simulate a real power network that contains large switching loads, such as electric motors.

Trap mode (TRAP) allows multiple short voltage dips to be superimposed on the sinusoidal output signal, which is used to simulate a real power network with thin wires, which has powerful short-term connected loads, such as electric arc welders.

In order to generate non-standard waveforms, as well as signals of any arbitrary shape, the sources of the TECH IT7600 series provide for the import of files with the CSV extension, which may contain the necessary curves. In addition, the IT7600 series has an analog input interface with a ±10 Volt input voltage range that allows you to receive signals from a separate generator, for example Tektronix AFG1000.

Built-in multimeter and wattmeter

In order to effectively monitor the status of the AC voltage outputs, the ITECH IT7600 series models incorporate an accurate digital multimeter that measures major and minor output signal parameters, including voltages, currents, active, reactive and apparent powers on each channel. This screenshot shows an example of the built-in multimeter.

Video review of basic operations when working with sources of the ITECH IT7600 series

This video shows typical operations that are performed when working with ITECH IT7600 series sources. The 1.5 kVA source model IT7624 is used for the demonstration. An electronic load is used as a load IT8615. The video shows: turning on the source, setting the initial parameters, the function of the built-in oscilloscope, as well as the function of the built-in multimeter and power meter.

Design of AC power sources ITECH IT7600

The IT7600 series contains 10 models with total output power from 750 VA to 54,000 VA. Accordingly, the weight and overall dimensions of different models of the series differ significantly. The two low-power models (750VA IT7622 and 1500VA IT7624) are 3U high and can be desktop or rack mounted. Model IT7626, designed for 3000 VA, is made in a larger case, 6U high. The photo below shows what these three models look like.

This photo shows the rear panel of the IT7626 with a maximum total power of 3,000 VA. Communication interfaces are located in the upper part of the panel: USB, LAN (Ethernet), GPIB (IEEE-488.2), RS-232 and CAN. A pair of "SYSTEM BUS" connectors are placed separately, which are used to synchronize the operation of several devices on the Master-Slave principle.

Seven powerful models from 9,000 VA to 54,000 VA come pre-mounted in a wheeled rack. The more power, the greater the height of the rack and its weight. The photo below shows the appearance of two ITECH IT7600 series sources with a maximum total power of 9,000 VA (model IT7627) and 18,000 VA (model IT7628). More about high power laboratory power supplies see here.

Specifications for IT7622 (up to 750 VA), IT7624 (up to 1.5 kVA) and IT7626 (up to 3 kVA) sources

Specifications for IT7627 (up to 9 kVA) and IT7628 (up to 18 kVA) sources

ITECH IT7600 Series AC Power Supply Package

Options and Accessories for ITECH IT7600 Series AC Power Supplies

The ITECH IT7600 series power supplies are built on an all-inclusive basis and do not provide additional options.