Data Centers · Equipment Category
Power monitoring and protective relays
Revenue and power-quality meters feeding building management and DCIM systems, and the protective relays that decide when a breaker opens.
What accuracy does metering need, and why is a relay setting never a local decision?
These two categories look similar and answer to very different requirements. Metering accuracy class governs what a reading may be used for -- revenue settlement demands far more than trend monitoring, and it is a commercial obligation rather than an engineering preference. Protective relays are not device-level settings at all: a relay is configured as part of a coordinated scheme, so changing one setting changes what happens everywhere downstream of it.
The 2 families in this category
24 documented configurations in total, with indicative lead times from 8 to 20 weeks. Each family links to its own reference page.
| Family | How it is specified | Lead time | Indicative band | Standards |
|---|---|---|---|---|
| Power Meters / BMS12 documented configurations | Class: Revenue / Power Quality Protocol: Modbus / BACnet / SNMP Mount: Panel / DIN |
~8 wk | $280 – $5K /ea | ANSI C12.20 IEC 61557-12 |
| Protective Relays12 documented configurations | Function: Feeder / Transformer Diff / Motor Comms: IEC 61850 / DNP3 Mount: Panel / Rack |
~20 wk | $1K – $14K /ea | IEEE C37.90 IEC 60255 |
On these figures. Price bands are market ranges for each family as a whole, published for budgeting — they are not quotes, and Voltfield sells nothing. Lead times are indicative and move with the market; the Lead-Time Index covers what is driving them.