The ALR3003 is a three-terminal adjustable power supply that provides 0-30V and 0-3A output voltage and current. It features automatic constant voltage or current operation, fast and fine output voltage adjustment, short-circuit protection and controlled cooling by fan.
The ALR3003 is an adjustable power supply with a digital display for voltage and current. It offers fine adjustment of output voltage from 0 to 30 V and output current from 0 to 3 A, with automatic constant‑voltage or constant‑current operation.
The unit includes multiple protection mechanisms such as short‑circuit, over‑temperature, and transformer over‑current protection, and complies with safety standards (IP21, SEFV). Technical data such as input voltage, power consumption, dielectric strength, and resolution are detailed in the manual.
| Input voltage | 230 V ±10 % 50/60 Hz |
|---|---|
| Power consumption | 180 VA max |
| Protection level | IP 21 |
| Internal resistance | < 4 mA |
| Voltage resolution | 100 mV |
| Current resolution | 10 mA |
It provides short‑circuit protection, over‑temperature protection with a fan and thermal circuit breaker, and transformer over‑current protection by fuse.
The unit operates from a 230 V supply with ±10 % tolerance at 50/60 Hz.