Description
Technical Specifications
- Product Model: MICRO 1‑EV
- Brand: Unspecified legacy generator AVR unit
- Warranty: One Year
- Input Voltage: Generator exciter field input; auxiliary supply 18‑32 V DC
- Operating Temperature: ‑20 °C ~ +60 °C
- Storage Temperature: ‑40 °C ~ +85 °C
- Response Time: Voltage regulation loop ≤ 100 ms
- Protection Class: IP20, DIN‑rail / panel‑mount PCB assembly
- Accuracy Class: Steady‑state voltage regulation accuracy ±0.5 % FS
- Output Frequency: 40‑70 Hz (50/60 Hz nominal)
- Rated Current Range: Exciter field drive output typical 5 A continuous
- Communication Interface: No digital bus; analog measurement inputs, screw terminal field wiring
- Supported Protocols: None, analog closed‑loop AVR hardware
- Overload Capacity: Built‑in over‑current, over‑temperature, loss‑of‑sensing‑voltage protection; field short‑circuit limitation
- Dimensions: Approx. 110 mm × 85 mm × 40 mm; weight approx. 0.32 kg
Product Overview
The MICRO 1‑EV is an analog‑based automatic voltage regulator for brush‑type generator excitation systems. It samples generator terminal AC voltage, compares against set‑point reference, and adjusts excitation field current to stabilise generator output voltage under varying load conditions. It provides core AVR functions including voltage trim, droop adjustment, under‑excitation limiting, and loss‑of‑voltage protection. It addresses typical on‑site pain‑points: generator voltage drift with load change, excitation‑field short‑circuit damage, unstable output under nonlinear loads. Power‑system commissioning technicians and plant‑maintenance teams benefit from its compact form and simple potentiometer‑based parameter tuning. Widely used for retrofitting older generator sets and drop‑in spare‑part replacement for existing MICRO 1‑EV installations.
Application Scenarios
- Marine‑vessel auxiliary‑generator excitation control: Stabilises output voltage for ship‑board diesel gensets under variable marine‑load conditions.
- Industrial‑plant backup‑diesel‑generator cabinets: Controls brush‑excited generators for island‑mode backup‑power supply.
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