General
The device shown in the image is a Lovadon-branded industrial-grade multimeter or data logger. It features a digital display with indicators for measuring current in amperes (denoted by 'A'), with three such indicators suggesting a range of measurement capabilities. The 'K' indicator may signify a specific mode or setting related to the device's functions.
The front panel includes several buttons for navigating through the device's menus and settings, allowing users to configure and operate it according to their needs. Designed for industrial or laboratory settings, this device is likely used for monitoring and recording electrical parameters such as current, voltage, and possibly other relevant data.
Its robust construction and comprehensive functionality make it suitable for a wide range of applications, including but not limited to automotive manufacturing, rail transportation, food and pharmaceutical production, and more.
Technical Parameters
| measuring accuracy | current | 0.5level |
| Connection Mode | three phase four wires,three phase three wires |
| Rated current | AC 1A,AC 5A |
| Overload | 1.2times(continued),10times/5 second(instantaneous) |
| Power Consumption | <0.4VA per phase |
| Impedance | <20mΩ |
| Frequency | 45-65Hz |
| Power supply | Working Range | AC/DC 80-270V，AC220V，AC380V，AC100V |
| Power Consumption | <4VA |
| Function module | communication interface | 1 way RS~485communication,Modbus-RTU protocol |
| Baud Rate | 2400~9600bps |
| Switch input | 4ways |
| Switch onput | 3ways(capacity:AC250V/1A,DC30V/5A) |
| Transmission Onput | 3ways(analog onput:0/4-20mA or 0-5/10V) |
| Environment | Working Temperature | -10°C~ + 55°C |
| Storage Temperature | -25°C~ +70°C |
| Relative Humidity | ≤93%,no corrosive gas |
| Altitude | ≤2500m |
Safety
| Insulation Resistance | >100MΩ |
| Ac Electric | AC 2KV |
EMC Performance
| ESD Electrostatic Discharge | class 4 |
| Electrical Fast Transient Burst | class 4 |
| Surge（impact） | class 4 |
Molel NO. Function
| Measurement | Extended Function | Frame
size
(mm) | Hole
Size (mm) |
Three Phase AC Current
| Switching
Intput | Switching
Output | Analog
Output | Communi cation
interface | LED | LCD |
| LST12-3A | √ | 2 | 2 | 3 | 1 | √ | ― | 120*120 | 111*111 |
| LST12-3AY | √ | 2 | 2 | 3 | 1 | ― | √ |
| LST96-3A | √ | 2 | 2 | 3 | 1 | √ | ─ | 96*96 | 92*92 |
| LST96-3AY | √ | 2 | 2 | 3 | 1 | ― | √ |
| LST80-3A | √ | 2 | 2 | 1 | 1 | √ | ─ | 80*80 | 76*76 |
| LST80-3AY | √ | 2 | 2 | 1 | 1 | ― | √ |
| LST72-3A | √ | 2 | 2 | 1 | 1 | √ | ─ | 72*72 | 68*68 |
| LST72-3AY | √ | 2 | 2 | 1 | 1 | ― | √ |
| LST48-3A | √ | 2 | 2 | 1 | 1 | √ |
| 48*48 | 45*45 |
Yueqing Lovadon Electric Co., Ltd.
