On-load tap-changer position indicator (РПН) ИЦ407

Purpose and operating principle

• The indicator shows the tap-changer position of a power transformer. It is supplied in a panel-mount housing with rear terminal-block connections.

Specifications

• Number of tap positions shown ___
• Rated output voltage between the “UP” and “DN” terminals, V ..... 2.5
• Resistance of the РПН position sensor between the “UP” and “DN” terminals, min., Ω ..... 80
• Supply voltage range, Usup:
  • AC at 50–60 Hz, V ..... 85–265
  • DC, V ..... 60–350 V
• Power consumption, max., W ..... 2
• Permissible voltage between the supply and measuring circuits, kV ..... 1
• Conductors connected via terminal blocks; conductor cross-section, mm² ..... 0.5–1.5 0.5–1.5
• Overall dimensions, mm ..... 72×72×97
• Initial ready time after power-up, max., s ...... 3
• Panel cut-out size, mm ...... 68×68
• Weight, max., g ..... 200
• Operating temperature range, °C ..... −40 … +55
• Protection class to ГОСТ 14255:
  • enclosure ...... IP40
  • connector ...... IP20

Documentation:

• Datasheet for tap-position indicator (РПН) ИЦ407
• Replacing 132×132 and 172×172 panel-mount moving-coil instruments with digital panel instruments made by NPP "VEL"