Commercial buildings, residential complexes, and shopping malls rely on NAHU instrument transformers at the incoming substation for accurate, verifiable energy accounting — from a single tower block to a multi-building retail park.
NAHU supplies indoor current transformers and voltage transformers (3–12 kV) plus compact metering boxes for every point where a building buys power — from the MV incoming substation down to individual tenant risers.
Indoor CT/VT sets and combined metering boxes at the MV incoming point deliver billing-grade accuracy for the entire building load. NAHU indoor current and voltage transformers from 3–12 kV are epoxy-cast for a compact footprint in basement or rooftop substations.
Secondary-side metering and compact metering boxes split consumption per tenant, floor, or retail unit for fair, transparent billing. NAHU split-core and bar-type CTs mount onto existing busbars without disturbing supply.
Clean 5 A / 100 V secondary signals feed BMS and energy dashboards, so facilities teams see live consumption, demand, and power quality. NAHU CTs and metering boxes provide the standard secondary outputs BMS controllers expect.
Three core products cover every metering point in a commercial building. Tell us your voltage level and incoming load, and we'll size the complete CT/VT/metering set.
Indoor CTs from 3–12 kV in metering and protection classes, plus bar and split-core types for tenant panels.
Indoor VTs from 3–12 kV with standard 100 V secondaries, available in single and three-phase configurations.
Combined CT/VT metering boxes that consolidate measurement in one compact, tamper-resistant unit.