Overview

The Source-Sink NL Series electronic loads offer power handling from 200 VA up to 3,120 VA, voltage ranges between 10 V and 80 V, and current capabilities from 2 A to 320 A. Designed for precise source and sink operations, these devices support rapid switching and versatile control options suitable for laboratory and industrial testing.

Main Features

• Available in 2-quadrant and 4-quadrant versions enabling sourcing and sinking of current and voltage.
• Automatic mode switching between source and sink based on test conditions.
• Operating modes include constant voltage and constant current with independently adjustable limits.
• Analog measurement outputs (0–10 V) for real-time voltage and current monitoring.
• Analog control inputs for real-time adjustment of output voltage/current and limits.
• Standard interfaces: USB and RS-232; optional GPIB, LAN, and isolated analog I/O.
• Programmable waveforms and SCPI command set for automated testing.
• Software tools for battery testing, data logging, and waveform generation.

Operating Modes and Quadrant Functionality

2-quadrant units operate with positive output voltage and can source or sink current, starting from -1 V for stability with long leads, effectively acting as limited 4-quadrant devices. True 4-quadrant units handle both positive and negative voltages and currents.

Mechanical and Cooling Design

• Robust 19" rack-mount design, suitable for cabinet or tabletop use.
• Retractable handles on units 5 HU and above; optional castors for heavy units.
• Rear-side connections with binding posts or solid copper bars supporting various cable types.
• Air-cooled with temperature and current-dependent fan control to minimize noise.

Remote Control and Safety

• Full remote control via analog I/O interface with logic-level control for mode selection, output enable, and control speed.
• Optional electrically isolated analog I/O interface providing up to 500 V DC isolation for safe operation with potential differences.
• Safety covers available for output terminals to protect against hazardous voltages.

Hardware Expansions

• GPIB interface card (option ZS03) for enhanced connectivity.
• Power I/O card (option ZS07) with 8 relay outputs and 8 logical inputs isolated from load output.
• Castors (option ZS09) for mobility of large devices.
• Factory Calibration Certificate (FCC) compliant with DIN EN ISO 9000; free recalibration within 2 years.
• Data Acquisition Tool (option NL13) for fast synchronized data logging with waveform generation and timestamped memory.
• Ethernet to RS-232 converter (option ZS15) for network communication.
• Electrically isolated analog I/O interface (option NL06) for safe signal transmission with potential differences.

Software Tools

• Control Tool: Standard software for device configuration, data logging, trigger management, and cut-off criteria activation.
• Dynamic List and Data Acquisition Tool: Enables graphical waveform creation, storage, and fast synchronous data logging (requires NL13 option).
• Battery Test Tool: Supports charging, discharging, cycling, capacity determination, and logging for energy storage units with configurable cut-off criteria and test profiles; generates reports and exports data.

Technical Specifications and Model Overview

The NL Series includes unipolar devices with voltage ranges from -1 V to +100 V, current ranges from ±2 A to ±320 A, and power ratings from 200 W up to 3,600 W (models up to 6 kW available on request). Rise/fall times for current and voltage are typically 200 µs. Terminals vary by model and include binding posts, flat copper bars, bolts, and safety sockets. Power consumption and mains supply options depend on model power level. Dimensions range from 2 HU (88 mm height) to 11 HU (488 mm height) rack units, with weight scaling accordingly.

A detailed table lists model numbers with their voltage/current/power ratings, terminal types, power consumption, dimensions, and housing details.

Mechanical and Installation Details

• Designed for 19" rack installation; heights from 2 HU to 14 HU depending on power.
• Typical width 483 mm; depth and height vary by model.
• Sliding rails recommended due to device weight.
• Terminal types include flat copper bars, bolts, binding posts, and safety sockets.
• Optional castors increase height clearance for mobility.

Electrical and Measurement Accuracy

• Voltage measurement accuracy: ±0.1% of range (±0.05% typical).
• Current measurement accuracy: ±0.2% of range (±0.05% typical).
• Resolution: 18 bits standard; 13 bits with Data Acquisition Tool (NL13).
• Sampling rate: 330 ms standard (non-triggerable); 200 µs with data acquisition option.
• Setting accuracy for voltage/current: ±0.1% to ±0.2%.
• Ripple: 0.05% RMS of range.
• Load effect: 0.1% from 0 to 100% load.
• Line effect: ±0.02% for ±10% line voltage variation.
• Analog control accuracy and measurement outputs specified with offsets and input resistances.

Protection and Safety Features

• Overcurrent protection and overtemperature cut-off included.
• Voltage and current protection accuracy: ±0.1% to ±0.4%.
• Operating temperature range: 5 °C to 40 °C; storage -25 °C to 65 °C.
• Maximum operating altitude: 2000 m.
• Pollution degree 1 and overvoltage category II compliance.
• Cooling via temperature and current-controlled fans with front-to-rear airflow.
• Protection class IP20.
• Electrical safety standards: DIN EN 61010-1 and DIN EN 61010-2-030.
• EMC compliance: DIN EN 61326-1, DIN EN 55011, DIN EN 61000-3-2, DIN EN 61000-3-3.

Additional Features and Options

• Parallel operation of up to 3 devices in Master-Slave mode (hardware-controlled in current mode).
• External control functions include standby, operating mode change, trigger input/output, and remote shutdown.
• Power supply options: 115/230 V AC ±10%, 50-60 Hz; some models support 230/400 V AC - 16 A CEE.
• Factory calibration certificate provided with two free recalibrations.
• Warranty period: 2 years.

Installation and Usage Notes

• Allow approximately 100 mm additional depth for rear cable connections in 19" rack installations.
• Sliding rails are mandatory for safe installation due to device weight.
• Class C protective equipment recommended for mains supply due to high inrush current.
• Minimum load capacity for analog measurement outputs is 2 kΩ.

Manufacturer Information

Höcherl & Hackl GmbH
Industriestraße 13, 94357 Konzell, Germany
Phone: +49 9963/94301-0
Fax: +49 9963/94301-84
Email: [email protected]
Website: www.hoecherl-hackl.com

Note: All technical data apply at ambient temperature of 21 °C. Specifications are subject to change without notice.