Test Systems
GtestWorks Automated Testing Platform
VectWorks 3.0 Electrical Performance Test Software
MBN LV148 2013 is a professional specification for electrical and electronic components of 48V on-board electrical systems, providing important guidance for automotive electrical system design.
| Voltage Range | Status Description | Typical Scenarios |
|---|---|---|
| 54V＜U≤60V | Overvoltage Protection | Battery charging, DC/DC converter high voltage transient protection |
| 52V＜U≤54V | High Voltage Range with Functional Limitations | Energy recovery, high power load startup |
| 36V≤U≤52V | Normal Operating Voltage Range | Regular operation, all functions normal |
| 24V≤U＜36V | Low Voltage Range with Functional Limitations | Cold start |
| 20V≤U＜24V | Undervoltage Protection | Long-term parking |
The components are operational without limitation and provide their specified function.
DUT can operate normally without functional limitations.
The components continue to be operational without limitation. The components provide a function within the deviations permissible for functional status B. The components must automatically provide their specified function on return to functional status A.
DUT operates within permissible deviations for Functional Status B without limitations and can automatically return to Functional Status A.
The components continue to be operational, must not assume undefined statuses and, in particular, must not cause any other components to malfunction. The components may reduce their electrical power for reasons of self-protection. The components must automatically provide their specified function on return to functional status A or B.
Some functions are limited, with self-protection capabilities during faults, and can automatically recover to Functional Status A or B.
The components continue to be operational, and they must not assume undefined statuses. The components may reduce their electrical power to zero. At the end of the exposure, the DUT must return to functional status A by means of reset(e.g., change of ignition status, new start of the vehicle).
Some functions are limited, power can be automatically cut off during faults, and can recover to Functional Status A after system restoration.
| Test Item | DC | Edge Characteristics | Remarks |
|---|---|---|---|
| E48-01a Long-term overvoltage | 48-60V | 120V/s | Functional status requirements vary by DUT type; |
| E48-01b Overvoltage in backfeeding components | 52-58V | / | During testing, DUT voltage must be less than 58V; |
| E48-02 Transient overvoltage | 48V-70V | 22V/ms | 1. 10mΩ≤Ri≤100mΩ； 2. Cycle count: 3 times for short-term test, 1000 times for long-term test; |
| E48-03 Transient process in the lower operating range with limited function | 24V-36V | 6.7V/ms | Functional Status B; |
| E48-04 Recuperation | 52V-54V | 0.02V/ms | Functional status requirements vary by DUT type; |
| E48-05 Superimposed AC voltage | 36V,52V | / | 1. Ri=60mΩ； 2. Frequency and limits: 15Hz-200kHz, divided into two frequency bands F1：15Hz-30kHz，Vpp=6V； F2：30kHz-200kHz，Vpp=2V； 3. Sweep mode: triangular/logarithmic; |
E48-06 Slow decrease and increase of the supply voltage E48-06 for operation without storage |
0V-52V | 2V/min | Functional status requirements vary by DUT type; |
E48-06 Slow decrease and increase of the supply voltage E48-06 for operation with storage, part 1 |
0V-52V | 2V/min | Functional status requirements vary by DUT type; |
E48-06 Slow decrease and increase of the supply voltage E48-06 for operation with storage, part 2 |
0V-48V | DC + 10kHz/6Vpp AC signal | 1. Functional status requirements vary by DUT type; 2. Superimpose 10kHz AC disturbance signal on DC voltage to simulate high-frequency ripple noise in the power system and verify DUT stability; |
| E48-07 Slow decrease, quick increase of the supply voltage | 0V-52V | 48V/ms | Functional Status A; |
| E48-08 Reset behavior | 0V-36V | ΔV1=2V； ΔV2=0.5V； |
1. ΔV1 for 24V-36V, ΔV2 for 0-24V; 2. Functional status requirements vary by test level; |
| E48-09 Short interruptions | 0V,48V | / | Recover to Functional Status A within 100μs/achieve Functional Status C in other cases; |
| E48-10 Start pulses | 24V-48V | 24V/ms | 1. DUTs are divided into start-related equipment and start-unrelated equipment; 2. Test waveforms and levels are correspondingly divided into 2 types; |
| E48-11 Loss of ground BN48 | 14V,48V | / | 2 test cases, 2 test requirements; |
| E48-12 Ground offset | 48V | / | ±1V potential difference must not affect DUT's functional status; |
| E48-13 Internal dielectric strength | 60V | / | Test duration 60min, insulation resistance at least 1MΩ; |
| E48-14 Closed-circuit current | 48V | / | Closed-loop current consumption is 0mA; |
| E48-15 Operation in the range without functional limitation | 36V-52V | 12V/ms | Functional Status A; |
| E48-16 Operation in the upper range with functional limitation | 48V-54V | 2.5V/s | No fault information input in event memory; |
| E48-17 Operation in the lower range with functional limitation | 24V-48V | 11.5V/s | No fault information input in event memory; |
| E48-18 Overvoltage range | 48V-58V | 5V/ms | Overvoltage fault information must be input to event memory; |
| E48-19 Undervoltage range | 20V-48V | 28V/ms | Undervoltage fault information must be input to event memory; |
| E48-20 Fault current, part 1 | 14V,48V,60V | / | Power supply current for T.40: | I |≤1uA; |
| E48-20 Fault current, part 2 | 14V,48V,70V | / | Current for BN12 and BN48: | I |≤1uA; |
| E48-21 Short circuit in signal circuit and load circuit | 36V,52V | / | Functional status varies by pin (C/D); |
GreenTest Technology's PTS series electrical performance test system consists of the PTS series power system, load dump module (optional), micro-interrupt module (optional), and other equipment. It is a modular, high-precision professional test platform specifically designed for electrical performance testing of automotive components.
High Integration Design
Integrated Software and Hardware
Multi-Standard Compatibility
Easy to Expand
PTS Series Power System
VectWorks electrical performance test software is a software developed by GreenTest Technology based on the GtestWorks automated test platform. Its engine is based on dynamic test script execution. This foundational architecture facilitates easy and direct configuration of test sequences without needing specific knowledge of remote instrument control. Simply configure the test items and levels required, offering high flexibility.
The software provides users with standard-compliant test templates, enabling remote parameter setting, data acquisition, waveform editing, configuration import/export, report viewing, etc., achieving automation of complex tests.
Closed-Loop Dynamic Testing
Integrated real-time monitoring and dynamic feedback mechanism
High/Low Voltage Superimposed Ripple Test
Complies with standard verification requirements (including ripple Upp, Ipp monitoring)
Power Supply and Amplifier Architecture
Compatible with bipolar power supply and amplifier architecture solutions
