N67000 High Speed Programmable DC Electronic Load

N67000 series is an ultra high speed programmable DC electronic load with high reliability, high precision and multi-function. N67000 series has three specifications: 600W/1200W/1800W. It can be up to 1.8kW in standard 2U and 19 inch chassis, supporting parallel control and can realize power expansion through master+slave. N67000 supports three ranges of voltage, current, power and resistance, and provides high-precision measurement, which makes the test range wider of a single unit.
N67000 series features rich functionality and powerful performance. It has a single-unit loading speed as high as 60A/μs, and when paralleled, the slope exceeds 100A/μs. With 8 operation modes, N67000 supports sequence test, dynamic test, discharge test, charge test, OCP/OPP test, short-circuit simulation, equivalent DC internal resistance (DCIR ) test (optional), AC impedance test, arbitrary waveform load test, etc. It supports local/remote control, with LAN/RS232/CAN interface, USB HOST interface (waveform import), digital input and output interface, analog input and output interface as standard, and optional GPIB interface as optional. All these make the N67000 series suitable for various testing scenarios such as sensors, AI chips, high-speed switch-mode power supplies, server power supplies, and scientific research experiments.

Main Features

●Standalone power range: 600W/1200W/1800W

●Current range: 0~120A/0~240A/0~360A

●CV, CC, CP, CR three ranges, wide measurement range

●Supporting SEQ test, discharge test, charge test, OCP/OPP test and short-circuit simulation

●8 operation modes: CC, CV, CP, CR, CV+CC, CR+CC, CV+CR, CP+CC

●Programmable protection, OCP, OCP, OPP, OTP and reverse connection detection

●Time measurement, rise/fall time measurement accuracy: 1μs

●Supporting 100 groups of parameters to be saved when powered off and easy to recall

●Supporting MPPT maximum power point tracking function

●Equivalent DC internal resistance (DCIR) test (optional)

●LAN/RS232/CAN as standard interface, GPIB as optional interface

●Voltage measurement accuracy: 0.05%+0.05%F.S.

●Current measurement accuracy: 0.1%+0.1%F.S.

Application Fields

●Testing of server power supply, UPS, communication power supply

●Testing of sensors, AI chips

●Discharge testing of fuel cells, power batteries, lead storage batteries

●Testing of power electronic components

●Aging test of fuses and relays

Functions & Advantages

Ultra high speed response with μs-level loading capability

With a current loading speed of up to 60A/μs for a single unit and a slope of over 100A/μs for multiple units in parallel, N67000 meets the needs of testing scenarios such as sensors, AI chips, and high-speed switching power supplies.In power supply testing, when the power supply needs to quickly adjust its output to meet load changes, the rapid response capability ensures the accuracy of test results. In testing systems, N67000 series can more accurately simulate load changes under actual working conditions, thereby providing a more realistic testing environment.

Parallel connection for power extension

N67000 supports parallel connection by master+slave and active currentsharing. When the load power needs to be increased, models with the same voltage specification can be connected in parallel (master + slave) to achieve the required current and power. When using N67000, users only needs to set current on the master. The slave current will be distributed automatically, which simplifies the operation steps.

Multiple operating modes for multiple test scenarios

N67000 supports four normal working modes: CC, CV, CP, and CR. In order to cope with the change of load characteristics in the actual test process, N67000 has also been developed with CV+CC, CR+CC, CV+CR, CP+CC four combined working modes. For example, CR+CC is suitable for the startup test of power supply to prevent overcurrent protection when the power supply is turned on. CV+CR can replace the setting application of Von point. CV+CC can simulate the working mode transition process of battery charging. Users can choose different working modes for test according to their actual situation.

High speed dynamic mode, with dynamic frequency sweep

N67000 has a high-speed dynamic mode. The dynamic characteristics of the DC power supply can be tested by simulating the dynamic load behavior of the power supply through the dynamic mode. N67000 provides dynamic frequency sweep and programmable dynamic mode, including CCD constant current dynamic, CVD constant voltage dynamic, CRD constant resistance dynamic, and CPD constant power dynamic. Programmable dynamic load mode allows setting of high/low range, rise/fall slew rate etc.

Charge/discharge test

Users can set different conditions on the front panel to meet their test demands. For example, when battery voltage is lower than initial voltage, N67000 internal counter will start counting. The counter will stop working until the battery voltage drops to cut-off voltage.

OCP (over current protection) test

During OCP test, N67000 will load under CC mode and check whether the DUT voltage is lower than cut-off voltage. If lower, N67000 will record the present loading current as the test result and shut the input to stop the test. If the DUT voltage is higher than cut-off voltage, N67000 will increase the loading current until the DUT voltage is lower than cut-off voltage or it reaches the Max. loading current.