Test environment¶
Defaults from Section 6 apply to every test unless the test method overrides them. The thermal-propagation test (Appendix C.5.2 a) reuses the same environment band but adds wind-speed and minimum-temperature constraints — see thermal propagation.
Ambient conditions (6.1.1)¶
Unless otherwise specified, the test environment temperature should be 22°C ± 5°C, relative humidity should be 10% ~ 90%, and atmospheric pressure should be 86 kPa ~ 106 kPa.
| Quantity | Range |
|---|---|
| Temperature | 22 °C ± 5 °C |
| Relative humidity | 10 % – 90 % |
| Atmospheric pressure | 86 kPa – 106 kPa |
Source: clause 6.1.1.
Instrument accuracy (6.2)¶
The accuracy of measurement instruments and equipment should meet the following requirements:
| Instrument | Required accuracy |
|---|---|
| Voltage | ± 0.5 % FS |
| Current | ± 0.5 % FS |
| Temperature | ± 1 °C |
| Humidity | ± 2 % RH |
| Time | ± 0.1 s |
| Dimension | ± 0.1 % FS |
| Mass | ± 0.1 % FS |
| Pressure | ± 1 % FS |
FS = full scale. Source: clause 6.2 (a)–(h).
Process errors (6.3)¶
The error between the control value (actual value) and the target value should meet the following requirements:
| Quantity | Allowed deviation from target |
|---|---|
| Voltage | ± 1 % |
| Current | ± 1 % |
| Temperature | ± 2 °C |
| Time | ± 0.1 s |
Source: clause 6.3 (a)–(d).
Engineering note (non-normative): instrument accuracy (6.2) and process error (6.3) are independent budgets. A current sensor that is accurate to ± 0.5 % FS still has to be commanded to within ± 1 % of the target current — in most rigs the loop tuning, not the sensor, is the binding constraint.
Data recording (6.4)¶
Unless otherwise specified, the recording interval for test data (such as voltage, current, temperature, time, etc.) should not exceed 15 seconds.
Source: clause 6.4.
Engineering note (non-normative): 15 s is the upper bound for routine logging. Several tests require finer resolution implicitly — the thermal-propagation criterion
dT/dt ≥ 1 °C/s for > 3 s(Appendix C) cannot be evaluated at a 15 s sample interval, so trigger-cell instrumentation must run faster.
Source¶
Clauses 6.1.1, 6.2, 6.3, 6.4 (PDF pages 13–14).