AVR demo cabinet

A rolling cabinet that shows an AVR holding the voltage, live.

Concept, November 2026

GRID %159131701247HMIET-Ⅰ AUTOMATIC VOLTAGE REGULATORRunFaultRemoteAutoParallelU/I BlockTap BlockAVR FailedRegulatingPar.BlockT1 · MASTER · AUTO09TAP11.00 kV▲▼◀▶OKESCRSTHMShanghai Huaming Power Equipment Co.,Ltd.HMIET-Ⅰ AUTOMATIC VOLTAGE REGULATORRunFaultRemoteAutoParallelU/I BlockTap BlockAVR FailedRegulatingPar.BlockT2 · FOLLOWER09TAP11.00 kV▲▼◀▶OKESCRSTHMShanghai Huaming Power Equipment Co.,Ltd.HMC-3C有载分接开关位置指示器LOAD TAP POSITION INDICATOR · T18809TELECONTROL1-NSTOPN-1POWERSHANGHAI HUAMING POWER EQUIPMENT CO.,LTD. CHINAHMC-3C有载分接开关位置指示器LOAD TAP POSITION INDICATOR · T28809TELECONTROL1-NSTOPN-1POWERSHANGHAI HUAMING POWER EQUIPMENT CO.,LTD. CHINAVOLTAGE CONTROL · T1 ∥ T2LIVET1 · MASTER0911.00 kVT2 · FOLLOWER0911.00 kV+1 %−1 %GRID 100.0 %

In band, 11.00 kV

Grid

Specification

Size
600 × 500 × 1700 mm, 1800 on castors
Rack
19″, 20U
AVR
2 × Huaming HMIET-I, master and follower
Tap indicator
2 × Huaming HMC-3C
Test units
Grid source, tap‑changer simulator
Screen
22″ on a stand, keyboard tray
Supply
230 V, one 13 A plug
Castors
3″, lockable

What it is for

  • Show the whole AVR system working, live
  • Demo parallel control: master and follower
  • Something real to show at office visits
  • One reusable asset for shows and training
  • Test AVR settings in Singapore before site

Dots: how clearly the sketch shows it.

Build

Rack layout

SlotSizeHeight, mmUnit
U201U1117–1159Cable entry, brush strip
S5, S63U984–11152 × HMC-3C tap indicator
S44U806–981HMIET-I AVR, T2 follower
S34U628–803HMIET-I AVR, T1 master
S24U450–625Tap‑changer simulator
S14U272–447Grid source
Locker120–255Cable drawer

Before building

  • Lower the tray to 1.0–1.1 m
  • Heaviest unit at the bottom
  • Leave 100 mm behind each unit
  • Fan low, louvres high
  • RCD and earth stud on the frame

Swipe for the side view

FLOORS1 · Grid sourceU1–4 · 4US2 · Tap-changer simulatorU5–8 · 4U177482.896U1U2U3U4U5U6U7U8U9U10U11U12U13U14U15U16U17U18U19U20top frame 1780–1800posts 15×15perforated back panelmonitor ≈22″ 460×280monitor standworktop 15 thkkeyboard tray 440 Wpush handle (R side)vent slotscable duct (R side)locker drawer + lockkick plate3″ castor, lockableU20 · cable entry · 1Ubrush stripS5 · S6 · HMC-3C ×2 · 3UT1 · T2 tap indicatorseach 192 × 96S4 · HMIET-I AVR · 4UT2 followerS3 · HMIET-I AVR · 4UT1 masternative 19″, 482.8 × 17718001340 worktop100rack 270–1160 · 20U600500 rack openingFRONT ELEVATIONtray ≈1295above floortop frame barslouvres (exhaust)push handle, 23 proudcable duct 65×18side panel seamintake fan Ø12013 A power stripearth stud13 A plug, lead to floorHMIET-I AVR ×2 (hidden)body 267 deeptray 1295monitor 1390–1670100200 pull-out500RIGHT SIDE ELEVATIONAVR DEMO CABINETGENERAL ARRANGEMENTDIMENSIONS IN mmCONCEPT, NOV 2026