OCPP 1.6j Meter Values#
Overview#
This document outlines the available meter values from amina charging stations under OCPP 1.6j.
Available Meter Values#
1. Voltage Measurements#
Measurand: Voltage
Unit: V (Volts)
Purpose: Monitor grid voltage stability and quality
Phase |
Description |
Typical Range |
|---|---|---|
L1 |
Phase 1 Voltage |
220-240V (EU) |
L2 |
Phase 2 Voltage |
220-240V (EU) |
L3 |
Phase 3 Voltage |
220-240V (EU) |
Note: Phase value is ‘0’ when phase is not connected
2. Current Measurements#
Measurand: Current.Import
Unit: A (Amperes)
Purpose: Monitor actual current draw during charging sessions
Phase |
Description |
Typical Range |
|---|---|---|
L1 |
Phase 1 Current |
6-32A |
L2 |
Phase 2 Current |
6-32A |
L3 |
Phase 3 Current |
6-32A |
N |
Neutral Current |
- |
3. Power Factor#
Measurand: Power.Factor
Unit: None (dimensionless, -1.0 to +1.0)
Purpose: Monitor power quality and grid efficiency
Phase |
Description |
Optimal Range |
|---|---|---|
L1 |
Phase 1 Power Factor |
0.95 to 1.0 (leading/lagging) |
L2 |
Phase 2 Power Factor |
0.95 to 1.0 (leading/lagging) |
L3 |
Phase 3 Power Factor |
0.95 to 1.0 (leading/lagging) |
4. Active Power Import#
Measurand: Power.Active.Import
Unit: W (Watts)
Purpose: Real-time power consumption monitoring
Measurement |
Description |
Typical Range |
|---|---|---|
L1 |
Phase 1 Active Power |
0-7.4kW (32A @ 230V) |
L2 |
Phase 2 Active Power |
0-7.4kW (32A @ 230V) |
L3 |
Phase 3 Active Power |
0-7.4kW (32A @ 230V) |
Total |
Combined Power |
0-22kW (three-phase) |
5. Frequency#
Measurand: Frequency
Unit: None (Hz implied, OCPP 1.6j limitation)
Purpose: Grid frequency monitoring
Phase |
Description |
Normal Range |
|---|---|---|
L1 |
Phase 1 Frequency |
49.5-50.5Hz (EU) |
L2 |
Phase 2 Frequency |
49.5-50.5Hz (EU) |
L3 |
Phase 3 Frequency |
49.5-50.5Hz (EU) |
6. Energy Register#
Measurand: Energy.Active.Import.Register
Unit: Wh (Watt-hours)
Purpose: Cumulative energy consumption tracking
Type |
Description |
Reset Behavior |
|---|---|---|
Total |
Cumulative Energy Imported |
Manual reset or rollover at max value |
CSMS Configuration and Monitoring#
Note: The measurement circutry within the charger is calibrated to measure currents appropriate to charging cars. When very little current is drawn (close to 0A), the measurements you receive will mostly consist of noise (and may be negative).
This does not affect cumulative measurements, as the noise has a mean of 0. This only applies to paused charging sessions, or if you have configured Cst_MeterValuesInTxOnly to value false.