Metered rack PDU: billing-grade energy at the feed
One metering board per feed reports current, voltage and power within 1% and totals energy on a 1 grade register at 0.1 kWh scale, on the OLED panel, the web server and SNMP at once.
- Metering accuracy
- 1% current, voltage, power
- Voltage window
- 90V ~ 350V
- Total current
- Scale 0.1A
- Energy
- 1 grade · 0.1 kWh
- Readings
- Panel, web, SNMP
- Interfaces
- Ethernet, RS485
Every register and the digit it reports in
A number is only checkable when its scale and its accuracy are stated, so both are fixed at order and repeated on the specification sheet.
| Register | Value | Basis |
|---|---|---|
| Current | 1% +1 digit | Per reporting line, scale 0.1A |
| Voltage | 1% +1 digit | Scale 1V across 90V ~ 350V |
| Power | from voltage and current | Same sampling window as the totals |
| Total energy | 1 grade | Scale 0.1 kWh, billing-grade |
| Display | IP / I / V / W / kWh | Plus main breaker state |
| Interfaces | 10/100M Ethernet, RS485 | SNMP, Modbus, embedded web server |
| Alerts | SMTP, threshold configurable | Traps pushed by the unit itself |
| Sensor inputs | -30°C ~ 100°C, 1°C step | Temperature and humidity channels |
Where the current sample is taken
The sample is taken on the busbar that feeds the outlet row rather than on the inlet cord, so the reading covers what the rack actually draws. The shunt and the metering chip share a ground with the control board, which keeps the analogue path short and removes the second enclosure an external meter would add.
- Sample pointoutlet-row busbar
- Sample pathshunt and metering chip
- Reading intervalcontinuous
- Published topanel, web, SNMP, Modbus
Six registers on one metering board
Each figure is a register value with a stated scale. The panel, the web server and the SNMP object tree report the same numbers.
Eight readings on the metered feed
Current
1% +1 digit
Scale 0.1A on panel and SNMP.
Voltage
90V ~ 350V
Scale 1V across the window.
Power
voltage x current
One sampling window for totals.
Energy
1 grade
0.1 kWh on a billing-grade register.
Threshold alert
SMTP
Trip and clear messages to the admin.
Event log
20,000
Records kept through a power cut.
Web server
on board
Register page served by the unit.
Sensor input
-30°C ~ 100°C
Temperature and humidity channels.
Three steps between a metered line and an invoice
Each step leaves a document, so the metering chain can be audited after delivery.
Unit test
Every unit runs a 100% electrical test at the configured load, and the panel reading is compared against the reference bench meter.
Register check
Scales, register list and SNMP object identifiers are checked against the order line before packing.
Site thresholds
Current and temperature trip points stay configurable, so the operating team sets them rather than inheriting a factory default.
State the feed, get the register list
Current per feed, voltage window, metering depth and the interface in use. The configured quotation returns with the register list and the per-line specification sheet in English.
- Reply promisewithin 12 hours, weekdays
- With the quoteregister map, scale per register
- On requestcertificate names and holders
