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The 3ctest VTE-743T1 is mainly designed to conduct voltage emission test as per ISO 7637-2. The sketch map is shown below. It is consist by 2 switches, shunt resistor and an artificial network as per ISO 7637-2. During the transient emission test, a switch should be controlled at the same time. Switch MS-743T1 is a standard automotive relay to measure slow transient emission (pulse in millisecond, amplitude is more than 400V). Switch ES-743T1 is a semi-conductor switch to measure low voltage transient emission (pulse from microsecond to millisecond, amplitude is less than 400V).

Schematic Diagram
| Specifications | |
| Electronic switch module | |
| Switch time(off time when test voltage:13.5V) | 300ns ±20% test load 50μH/0.6ohm |
| Voltage drop | <2V@25A |
| Protection voltage | 400 V |
| Relay module | |
| Automotive relay with continuous current more than 30A | |
| Simulator | |
| Display | LED display |
| On-time for switch | 1ms-9999ms (+/-10%) |
| Off-time for switch | 1ms-9999ms (+/-10%) |
| Parallel resistor Rs | 10Ω, 20Ω, 40Ω, 120Ω or connect others by users |
| Trigger mode | Automatic, manual, external |
| Test voltage | 12V, 24V |
| Humidity alarm | 70°C |
| Internal artificial mains network | |
| Inductance | 5μH |
| Capacitance | 0.1μF |
| Resistance | 50Ω |
| Load current | DC max. 50A continuous |
| Power supply | 100V-240V±10%,50/60Hz |
| Temperature | 15~35°C |
| Dimension(LŨWŨH) | 520×520×590mm |
| Weight | Approx. 16kg |




























