---
title: Rotary screw air compressor supply voltage limits and regulator
source_url: https://cncu.co.za/Miscellaneous/Rotary%20Screw%20Air%20Compressor/If%20Voltage%20Too%20High.txt
source_ref: local://T:/U/C/Miscellaneous/Rotary Screw Air Compressor/If Voltage Too High.txt
fetched_at: 2026-08-14T01:29:33Z
category: how-to
product: AM.CO.ZA 16 bar rotary screw air compressor (AG-AIR/SCREW-15)
---

# Rotary screw air compressor supply voltage limits

**Product:** AM.CO.ZA **16 bar rotary screw air compressor** sold as buythis dump SKU **AG-AIR/SCREW-15** (15 kW / 380 V / 16 bar, TSEPM15-16). **No prices.**
**Source:** local cncu mirror `T:\U\C\Miscellaneous\Rotary Screw Air Compressor\If Voltage Too High.txt` (880 bytes, MD5 `050FA1C27694B7E87199A62B536E01D4`) and live https://cncu.co.za/Miscellaneous/Rotary%20Screw%20Air%20Compressor/If%20Voltage%20Too%20High.txt (HEAD **200**, same length). Buythis dump product link https://buythis.co.za/ag-air-screw-15#ai (do not crawl buythis.co.za). **No prices.**

## Limits (from the source txt; newer info wins)

- Machine default: **380 V**
- Still operates up to **400 V**
- Maximum voltage can be raised to **415 V** using the panel password
- Going **higher than 415 V** can damage the machine; **no warranty** in that case
- If supply **consistently exceeds 410 V**, obtain a voltage regulator

The txt points at buythis **AG-VOLTAGE/40KVA** (40 kVA 3-phase 380 V AC high-precision fully-automatic servo stabilizer) via https://buythis.co.za/ag-voltage-40kva. That href also appears as an accessory recommendation on fiber-laser SKUs in `T:\V\sources\catalog\buythis-daily.html`. This dump has **no** `Product SKU` block for **AG-VOLTAGE/40KVA** (do not invent a complete name from the txt alone).

The same txt restates machine SKU **AG-AIR/SCREW-15** and https://buythis.co.za/ag-air-screw-15 (15 kW 16 bar rotary screw compressor 1.2 m³/min, PMSM VFD with touchscreen, 6-level filter, air dryer). Dump complete name matches that description (TSEPM15-16). **No prices.**

Copied original: `manuals/rotary-compressor/If Voltage Too High.txt`.

## Related

- User handbook: `manuals/rotary-compressor/16 Bar Rotary Screw Air Compressor User Manual.pdf`
- Maintenance how-to: `manuals/rotary-compressor/maintenance-plan.md`
- Software / drivers index: `drivers/rotary-compressor-firmware-index.md`