10 µV resolution
Voltage values can be programmed and read back in increments of 0.01 mV.
N8330 – Multi-channel Battery Simulator with up to 24 Channels
For precise cell-voltage emulation in BMS, CMS and automated verification systems.
The 2U architecture combines isolated cell channels in a single 19-inch instrument. This reduces rack space and wiring effort when creating extensive cell-voltage models, without requiring a separate power supply for every simulated measurement point.
Fast stabilisation
Rise time is specified at no more than 5 ms, with transient recovery within 200 µs.
LAN and RS485
Both interfaces support remote control and integration into automated test environments.
Series connection
Multiple instruments can be combined to emulate battery systems containing series-connected cells.
Personal project consultation
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Select the appropriate technical configuration or access product documentation directly.
ART. NO.
Description
Current [A]
Power [P]
Voltage [V]
N8330A
|
Description
N8330A Ultra-high accuracy 24-channel battery simulator, 6 V/channel, 1 A/channel, 6 W/channel, 2U
|
Current [A]
1
|
Power [P]
6
|
Voltage [V]
6
|
BZS without display
Technical Data
Height
2
Interfaces / Protocols
max. current per channel
max. power per channel
max. voltage per channel
Number of channels
24
16
Product category
Battery Cell Simulators
Type of Batterycellsimulator
Without Display
> 10 Channels
Uni-/Bidirectional
Unidirectional
N8330B
|
Description
N8330B Ultra-high accuracy 16-channel battery simulator, 5 V/channel, 2 A/channel, 10 W/channel, 2U
|
Current [A]
2
|
Power [P]
10
|
Voltage [V]
5
|
BZS without display
Technical Data
Height
2
Interfaces / Protocols
max. current per channel
max. power per channel
max. voltage per channel
Number of channels
24
16
Product category
Battery Cell Simulators
Type of Batterycellsimulator
Without Display
> 10 Channels
Uni-/Bidirectional
Unidirectional
N8330C
|
Description
N8330C Ultra-high accuracy 16-channel battery simulator, 5 V/channel, 3 A/channel, 15 W/channel, 2U
|
Current [A]
3
|
Power [P]
15
|
Voltage [V]
5
|
BZS without display
Technical Data
Height
2
Interfaces / Protocols
max. current per channel
max. power per channel
max. voltage per channel
Number of channels
24
16
Product category
Battery Cell Simulators
Type of Batterycellsimulator
Without Display
> 10 Channels
Uni-/Bidirectional
Unidirectional
N8330 series overview
The N8330 series emulates defined cell voltages and currents for testing battery management systems, cell monitoring circuits and multi-channel voltage acquisition equipment. Depending on the model, 16 or 24 independently programmable and isolated channels are available. The N8330A provides up to 6 V, 1 A and 6 W per channel. The N8330B and N8330C operate up to 5 V and provide 2 A or 3 A, with 10 W or 15 W per channel. Voltage programming and readback offer 0.01 mV resolution and an accuracy of 0.001% + 0.1 mV. CV and CC operation, four-wire sensing, LAN, RS485 and multi-channel software support precise automated testing. The 19-inch enclosure occupies 2U and provides a high channel density for rack-based test systems.
Key benefits
Fine cell-voltage steps
The 0.01 mV voltage resolution supports sensitive acquisition and BMS circuit tests using small setpoint changes.
High channel density
Up to 24 channels within 2U reduce the number of individual laboratory instruments and required rack space.
Isolated channels
Isolation is specified at 500 V DC between channels and 1,000 V DC from the output to ground.
Four-wire sensing
Measuring the voltage directly at the DUT compensates for voltage drops across connecting leads and improves repeatability.
Short transient recovery
After the specified load change, the output voltage stabilises within no more than 200 µs.
Central multi-channel control
The application software supports batch operation, channel displays, graphs, data analysis and reporting functions.
Operating principle of the multi-channel battery simulator
Each output operates as a separately programmable low-voltage channel for emulating a defined cell voltage. Voltage and current can be set and read back individually for every channel, allowing different cell conditions within a multi-cell system to be reproduced independently.
In CV operation, each channel regulates the programmed output voltage. CC operation provides regulated current control within the model-specific current range. The four-wire connection uses two conductors for the output and two separate sense conductors for voltage measurement directly at the DUT.
Electrical separation between the channels supports test configurations in which several cell potentials must be emulated simultaneously. Multiple N8330 instruments can be connected in series and remotely controlled through the software when larger series-connected cell systems are required.
Designing series-connected systems: The permissible instrument configuration and required total voltage must be defined for the individual test setup. A fixed maximum number of instruments for series operation is not specified.
Models and technical specifications
The three models differ in channel count, maximum cell voltage, output current and power per channel. All channels within an instrument use the same model-specific output configuration.
| Model | Channels | Voltage range per channel | Current range per channel | Power per channel |
|---|---|---|---|---|
| N8330A | 24 | 0 to 6 V | 0 to 1 A | 6 W |
| N8330B | 16 | 0 to 5 V | 0 to 2 A | 10 W |
| N8330C | 16 | 0 to 5 V | 0 to 3 A | 15 W |
Power specification: The stated values apply to each individual channel. The channels represent separate cell or measurement points and are not intended as one combined high-power output.
| Parameter | N8330A | N8330B | N8330C |
|---|---|---|---|
| Voltage setting accuracy at 23 ±5 °C | 0.001% + 0.1 mV | ||
| Voltage readback accuracy at 23 ±5 °C | 0.001% + 0.1 mV | ||
| Voltage setting and readback resolution | 0.01 mV | ||
| Current setting accuracy at 23 ±5 °C | 0.001% + 0.5 mA | 0.001% + 1 mA | 0.001% + 1.5 mA |
| Current readback accuracy at 23 ±5 °C | 0.001% + 0.5 mA | 0.001% + 1 mA | 0.001% + 1.5 mA |
| Current setting and readback resolution | 0.01 mA | ||
| Voltage temperature coefficient from 0 to 40 °C | 10 ppm/°C | ||
| Current temperature coefficient from 0 to 40 °C | 20 ppm/°C | ||
| Long-term stability | 40 ppm/1,000 h | ||
| Voltage ripple and noise from 20 Hz to 20 MHz | ≤2 mV RMS | ||
Dynamic response and regulation
The dynamic specifications distinguish between voltage rise time, voltage fall time and transient recovery. When evaluating a test sequence, the load condition during the programmed change must also be considered.
| Dynamic parameter | N8330A | N8330B | N8330C |
|---|---|---|---|
| No-load rise time, 10 to 90% of final value | ≤5 ms | ||
| Full-load rise time, 10 to 90% of final value | ≤5 ms | ||
| No-load fall time, 90 to 10% of final value | ≤3 s | ||
| Full-load fall time, 90 to 10% of final value | ≤30 ms | ≤20 ms | ≤10 ms |
| Transient recovery time | ≤200 µs | ||
| Communication response time | ≤10 ms | ||
The transient recovery time applies to a load change from 10 to 90% at full output voltage. The output voltage returns to within 50 mV of its previous value.
The substantial difference between no-load and full-load fall times should be considered in time-critical sequences. The actual DUT load condition is therefore relevant when programming rapid setpoint changes.
Operating modes and programmable functions
Regulated cell voltage
In CV operation, each channel provides a programmable voltage within its model-specific operating range.
Regulated output current
CC operation provides programmable current control up to 1 A, 2 A or 3 A per channel.
Individual channel programming
Voltage and current can be programmed and read back separately for every isolated channel.
Batch control and analysis
The software controls multiple channels together and provides measured values, graphs, data analysis and reports.
Typical applications
Isolated low-voltage channels, fine voltage resolution and central multi-channel control support testing of cell monitoring circuits, battery-system electronics and precise voltage acquisition equipment.
Automotive BMS and CMS testing
Defined cell voltages are applied to battery and cell management measurement inputs to test multi-cell conditions reproducibly.
BMS and acquisition IC testing
The 0.01 mV resolution provides finely stepped input signals for developing and verifying cell-voltage measurement circuits.
Battery-management testing for UAV systems
Cell monitoring and voltage acquisition in UAV battery systems can be tested under defined conditions using independent isolated channels.
Production and end-of-line testing
For smartphones, Bluetooth earphones, smartwatches and similar devices, the channel density supports parallel test stations and automated processes.
Voltage-acquisition calibration
Voltage acquisition equipment such as fuel-cell voltage monitors receives precise setpoints, while four-wire sensing reduces lead-related measurement errors.
Cell monitoring in energy-storage systems
CMS and BMS inputs in storage systems can be supplied with different cell voltages across multiple separated channels.
Interfaces, software and automation
The N8330 series combines network-based and serial remote control with multi-channel application software. Individual channels and extensive channel groups can therefore be operated from one interface.
| Element | Status | Function |
|---|---|---|
| LAN | Standard | Network-based remote control and integration into automated test systems. |
| RS485 | Standard, isolated | Serial communication for remote control and instrument integration. |
| N8330 application software | Supported | Individual channel settings, multi-channel batch operation, data display, graphs, analysis and report generation. |
| Four-wire sensing | Standard per channel | Separate sense leads measure the voltage directly at the DUT and compensate for lead losses. |
| Communication response time | ≤10 ms | Supports defined remote-control processes in multi-channel test environments. |
Series connection and scaling
Multiple N8330 instruments can be connected in series to reproduce the operating conditions of a series-connected battery. The instruments can be remotely controlled through the application software and integrated into automated test procedures.
Series-connected cell systems
Series operation extends the emulated total voltage for battery packs containing several series-connected cell groups.
Central remote operation
Connected instruments can be controlled centrally through the software and used for automated testing.
Project-specific configuration
Instrument quantity, total voltage, wiring and isolation must be configured for the intended battery system.
Installation and infrastructure
| Installation parameter | Technical specification |
|---|---|
| AC input | Single-phase, 220 V AC ±10% |
| Input current | <2 A |
| Input frequency | 47 to 63 Hz |
| Operating temperature | 0 to 40 °C |
| Storage temperature | −20 to 60 °C |
| Relative humidity | 5 to 90% RH, non-condensing |
| Operating altitude | <2,000 m |
| Atmospheric pressure | 80 to 110 kPa |
| Enclosure | 19-inch, 2U |
| Dimensions | 88.0 × 482.0 including handles × 568.5 mm |
| Net weight | Approx. 20 kg |
| Output-to-ground isolation | 1,000 V DC |
| Inter-channel isolation | 500 V DC |
N8330 series FAQ
Which N8330 model is suitable for my application?
The N8330A provides 24 channels with 6 V, 1 A and 6 W each. The N8330B provides 16 channels with 5 V, 2 A and 10 W. The N8330C provides 16 channels with 5 V, 3 A and 15 W.
Can the channels be programmed independently?
Yes. Voltage and current can be programmed and read back separately for every channel.
What voltage accuracy and resolution are available?
Setting and readback accuracy are 0.001% + 0.1 mV. Voltage resolution is 0.01 mV, corresponding to 10 µV.
What is the benefit of four-wire sensing?
The sense leads measure the voltage directly at the DUT, compensating for voltage drops across the output leads.
Can multiple instruments emulate a battery pack?
Yes. Multiple instruments can be connected in series to emulate a series-connected cell system. A fixed maximum number of instruments is not specified.
Which communication interfaces are available?
The instruments provide LAN and an isolated RS485 interface for remote control and system integration.
How quickly does the output respond to changes?
Voltage rise time is no more than 5 ms and transient recovery time is no more than 200 µs. Fall time depends on the model and load condition.
What rack space and AC input are required?
The instrument occupies 2U in a 19-inch rack and requires a single-phase 220 V AC ±10%, 47 to 63 Hz supply with an input current below 2 A.
Technical consultation for N8330 projects
ET System supports model selection, channel and wiring planning, and integration into automated BMS, CMS and multi-channel test systems.
- Selection of channel count, voltage, current and power
- Planning of four-wire connections and isolated measurement points
- Configuration of series-connected systems and software integration
Contact ET System for technical consultation and project enquiries
