Key Features:

Comprehensive Measurement: The 3270 Series includes 16-bit A/D DSP precision measurement circuitry. It offers precise real-time measurements of voltage (Vrms, Vpeak, Vmax, Vmin), current (Irms, Ipeak, Imax, Imin), wattage, volt-ampere (VA), frequency, crest factor (CF), power factor (PF), and total harmonic distortion (THD) for both voltage and current.
Multiple Load Modes: Supports various load modes, including Constant Current (CC), Linear Constant Current (Linear CC), Constant Resistance (CR), Constant Voltage (CV), and Constant Power (CP). It also includes an AC Rectifier Load mode for more complex testing environments.
Turbo Mode: Allows doubling the power and current capacity for a limited time, making it particularly suitable for fuse and breaker testing, short circuits, and overload protection (OCP, OPP) testing.
Parallel and Three-Phase Support: Up to three units can be connected in parallel for up to 90 kW total power. They can also be configured in three-phase △ or Y load configurations, synchronized and controlled by a master unit.
Wide Voltage and Frequency Range: Supports a voltage range of 50–350 Vrms (500Vdc) up to 480 Vrms (700Vdc) and a frequency range of 40–440 Hz, ensuring compatibility with various power systems and frequency requirements.
Efficiency and Backup Testing: Built-in modes for UPS efficiency, PV inverter efficiency, UPS backup time, battery discharge, transfer time, and fuse/breaker trip tests make this series perfect for real-world application testing.
Dynamic Load and Surge Testing: The 3270 Series supports surge current tests for sudden load changes and inrush current testing for inverter startups, providing essential data for assessing the reliability and stability of power systems.
Advanced Protection Features: Includes comprehensive protection against over-voltage (V), over-current (I), over-power (W), and temperature (°C), ensuring safe operation even in high-stress testing environments.
Remote Control Capabilities: The series can be operated remotely through optional interfaces like GPIB, RS-232, USB, and LAN, making it easy to integrate into automated test systems.

Technical Specifications:

Measurement Functions:

The 3270 Series is equipped with extensive measurement capabilities, ensuring accuracy and precision for all testing needs. Key measurement parameters include:
Voltage: Vrms, Vpeak, Vmax, Vmin
Current: Irms, Ipeak, Imax, Imin
Power: Watt, VA
Frequency: Accurate frequency measurement and monitoring
Crest Factor and Power Factor: CF range 1.414 to 5.0, PF range 0 to 1 (lead or lag)
Total Harmonic Distortion: THD for voltage and current
Time Measurement: For UPS backup, battery discharge, and breaker trip functions

Applications:

UPS Systems: Efficiency testing, backup time, and transfer time measurement
Inverters: Efficiency testing, surge, and inrush current testing
Batteries: Discharge testing and performance evaluation
Fuses and Circuit Breakers: Turbo mode allows for accurate short circuit, OCP, and OPP testing
Power Conditioners: Full testing of power stability and response to load changes

Optional Accessories:

GPIB, RS-232, USB, LAN Cards: For seamless integration into automated systems
BMS Protection Function Test: For battery management system evaluations
Programmable DC Load Current Waveform: 9923 module allows customized testing conditions

The 3270 Series AC & DC Electronic Load is a versatile and high-performance tool, designed to handle complex testing requirements in modern power systems. Its ability to deliver precise measurements, perform dynamic testing, and simulate real-world conditions makes it an essential instrument for engineers and technicians across industries.

3270 AC-DC Electronic Catalog