Programmable Electronic Multi-Channel DC Load | IT8700P Series

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Product number: IH-IT8700P-Serie

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ITECH IT7800P Series - Product cataloque

Product Information "Programmable Electronic Multi-Channel DC Load | IT8700P Series"

ITECH IT8700P Series
Modular Multi-Channel Electronic DC Load for Synchronized Testing of Multiple DC Outputs and Power Supplies
Up to 16 Channels, Up to 50 kHz Measurement Speed, and 25 kHz Dynamic Operation

Overview and Application Scope

The ITECH IT8700P Series is a programmable multi-channel electronic DC load (multichannel DC load) for the controlled loading of DC sources, power supplies, batteries in discharge mode, and DC-DC converters. It operates exclusively as an electronic sink and supports test scenarios in which multiple DC outputs or power paths are loaded simultaneously or in a coordinated manner.

Typical Test Scenarios

Multi-Output Power Supply Testing: Load Multiple Outputs in Parallel and Execute Load Changes with Precise Timing Coordination
DC-DC Converter Testing: Verify Control Behavior and Stability Under Dynamic Load Changes
Battery Discharge Testing: Run Reproducible Discharge Profiles and Monitor Cut-Off Conditions
Production and End-of-Line Testing: Automate Repeatable Multi-Channel Load Sequences

Modular Multi-Channel Concept

In test setups with multiple supply outputs or power stages, single-channel electronic DC loads are often not sufficient. The IT8700P Series enables parallel operation of multiple load channels within one mainframe and supports synchronized operation of multiple modules.

The modular architecture makes it possible to adapt the number of channels and the power rating to the respective DUT. Depending on the module configuration, multiple load points can be tested within one system and test sequences can be executed consistently.

Load Operating Modes and Dynamic Load Profiles

For realistic simulation of electrical consumers, the IT8700P Series supports constant current (CC), constant voltage (CV), constant power (CW), and constant resistance (CR) operating modes, as well as combined modes.

With the LIST function, time-dependent load profiles, defined load steps, and dynamic load changes can be executed automatically. This is particularly relevant for evaluating the control behavior and stability of DC sources under changing load conditions.

Measurement and Protection Functions

The IT8700P Series captures current and voltage values at measurement rates of up to 50 kHz, enabling precise measurements even during fast load changes and dynamic test profiles.

Integrated protection functions against overcurrent, overvoltage, overpower, and overtemperature protect both the DUT and the test system, enabling stable operation in development and production environments.

System Integration and Automation

SCPI-based remote control via standardized interfaces enables integration of the IT8700P Series into automated test systems, ATE environments, and multi-channel test benches. The modules can be controlled independently or synchronously and parameterized centrally.

This supports consistent test procedures, reduces system-related deviations between channels, and facilitates the implementation of repeatable test sequences.

Application Logic

Use the IT8700P Series when you need to test multiple DC outputs or power paths simultaneously and require defined load profiles, load steps, and time-coordinated sequences. The electronic DC load operates as a sink and loads the DUT in a controlled manner in order to evaluate control behavior, stability, and protection circuits under realistic load conditions.

What the IT8700P Series Is Not

Not a DC Voltage Source or Current Source, but Exclusively an Electronic DC Load (Sink)
Not Suitable for AC Load or Mains Testing
Not a Regenerative Load, with No Energy Fed Back into the Grid
Not a Safety Tester, Hipot Tester, or Insulation Tester

Configure the IT8700P Series to Match Your Application

We support you in selecting and configuring the IT8700P Series according to your DUTs, load profiles, and test procedures. This results in a modular DC load system that integrates cleanly into your test environment and enables reproducible, traceable test results.

AC / DC:	DC
Bidirectional:	no
Interfaces:	GPIB, RS-232, USB
Output Channels:	2, 4, 8
Working Mode:	CC - Constant Current, CR - Constant Resistance, CV - Constant Voltage

Available documents (Subject to change)

ITECH IT7800P Series - Product cataloque

Specifications of the Multichannel, Programmable Electronic DC Load - IT8700P Series

Number of Channels: 1–8 channels per single frame, expandable to 9–16 channels with extended frame
Form Factor (Mainframe): 4 U, 19-inch rack-mountable
Module Voltage Range (DC): 0–500 V (depending on module, see datasheet)
Module Current Range: 0–120 A (depending on module, see datasheet)
Module Power Range: 200–600 W (depending on module, see datasheet)
Dual-Channel Modules – Power Allocation: 0–300 W total, up to 250 W per channel (PCH1 + PCH2 ≤ 300 W) (depending on module, see datasheet)
Input Resistance (CR Mode): From a few milliohms up to the kilo-ohm range (depending on module and measurement range, see datasheet)
Dynamic Load Operation: Dynamic mode up to 25 kHz, LIST mode up to 100 kHz
Current Rise and Fall Slope: 0.0001–7.5 A/µs (depending on module and measurement range, see datasheet)
Minimum Current Rise Time (10–90%): Approx. 10–35 µs (depending on module, see datasheet)
Measurement Speed (Current / Voltage): Up to 50 kHz
Measurement Resolution: Up to 0.1 mV and 0.01 mA (depending on measurement range, see datasheet)
Measurement Accuracy (Readback): Voltage up to ±(0.025% + 0.025% FS), current up to ±(0.05% + 0.025% FS) (depending on range and module, see datasheet)
Time Measurement Function: 0.1 ms–100,000 s; additionally T1/T2: 20 µs–3600 s (depending on function, see datasheet)
System Architecture: Modular mainframe system with plug-in electronic load modules
Load Operating Modes: Constant Current (CC), Constant Voltage (CV), Constant Resistance (CR), Constant Power (CW), as well as combined modes (CV+CC, CR+CC, CW+CC, CV+CR (CR-LED))
Dynamic Power Allocation: Power allocation function for dual-channel modules
Short-Circuit Peak Measurement: Measurement of peak current and peak voltage (Vpk+ / Vpk−)
Automatic Test Functions: Limit monitoring for evaluation of test results
Protection Functions: OVP, OCP, OPP, OTP, and anti-reverse protection
I-Limit Function: Adjustable current limit in CV, CR, and CW operating modes
Interfaces (Mainframe): LAN, USB, RS232 as standard; GPIB optional (see datasheet)
Connection Concept: Front and rear load terminals for laboratory and rack wiring
Dimensions: Mainframe-dependent (see datasheet)
Weight: Depending on mainframe version and module configuration (see datasheet)

Note: All values given should be understood as aggregated ranges. Exact limits, resolutions, and accuracies depend on the module and measurement range. The official manufacturer’s IT8700P datasheet is authoritative.

Options and Accessories for the Multichannel, Programmable Electronic DC Load - IT8700P Series

IT-E32410-OO: Test cable 240 A / 100 cm, ring lug to ring lug, black/red
IT-E33620-OO: Test cable 360 A / 200 cm, ring lug to ring lug, black/red
IT-E31220-OO: Test cable 120 A / 200 cm, ring lug to ring lug, black/red
IT-E32420-OO: Test cable 240 A / 200 cm, ring lug to ring lug, black/red
IT-E30615-OO: Test cable 60 A / 150 cm, ring lug to ring lug, black/red
IT-E30312-YY: Test cable 30 A / 120 cm, Y-lug to Y-lug, black/red
IT-E9003: ITECH warranty up to 3 years
IT-E9005: ITECH warranty up to 5 years

Scope of Delivery of the Multichannel DC Load - IT8700P Series

IT8700P Series unit(s)
AC-main power cord
USB connection cable
Calibration report
DB25 communication cable (for IT8703P mainframe)

Application Areas of the Multichannel Electronic DC Loads - IT8700P Series

Automated test systems (ATE) for development and production
Avionics applications in civil aviation
Testing and analysis of data transmission systems
Testing of communication and signal technology
Diode, semiconductor, and electronic component testing

ITECH is one of the world's largest manufacturers of AC and DC power supplies. The group's diversified product portfolio includes battery testing and power supply test systems. The company's focus is on a competitive price-performance ratio.