that the CAISO Authorized Inspector monitor the generation output using other plant instrumentation or have the plant operator maintain the generation at constant output. C2.5 Instantaneous Demand CAISO Authorized Inspector compares the instantaneous demand from the test meter to the instantaneous demand from the revenue meter and indicates the results on the Site Verification Data Sheet C3. Revenue Meter Upon successful completion of the Instrument Transformer Verification and the Metering Service Verification, the CAISO Authorized Inspector either performs or witnesses a test of the Revenue meter. The recommended practice is to test the meter in place using a CAISO approved watt-hour/var-hour standard and load box. The accuracy test should be performed in the test mode to prevent the registration of test data in the meter. Before taking the meter out of service, the CAISO Authorized Inspector verifies with CAISO Meter Engineering that all clearances and permits are in effect. The CAISO Authorized Inspector records the time the meter was taken out of service, the output level of the generator, if and the time that the meter was placed back in service. All of the following information is recorded on the Site Verification Data Sheet. C3.1 Accuracy Test CAISO Authorized Inspector either performs or witnesses the performance of a calibration test on the revenue meter for watt-hour and var-hour function for both directions of energy flow (delivered/received). Tests should be performed with and without compensation applied to get a true test of the metered site. Utilize a CAISO approved test set to perform the calibration test. C3.2 Transformer and Line Loss Compensation Settings & Instrument Transformer Correction Factors The Transformer and Line Loss Correction Factors compensation values, in addition to the correction factors from the meter are compared to the values found in the owner’s documentation for the specific location. If the values differ, the CAISO Authorized Inspector makes a note in the remarks section of the Site Verification Data Sheet.
that the CAISO Authorized Inspector monitor the generation output using other plant instrumentation or have the plant operator maintain the generation at constant output. C2.5 Instantaneous Demand CAISO Authorized Inspector compares the instantaneous demand from the test meter to the instantaneous demand from the revenue meter and indicates the results on the Site Verification Data Sheet C3. Revenue Meter Upon successful completion of the Instrument Transformer Verification and the Metering Service Verification, the CAISO Authorized Inspector either performs or witnesses a test of the Revenue meter. The recommended practice is to test the meter in place using a CAISO approved watt-hour/var-hour standard and load box. The accuracy test should be performed in the test mode to prevent the registration of test data in the meter. Before taking the meter out of service, the CAISO Authorized Inspector verifies with CAISO Meter Engineering that all clearances and permits are in effect. The CAISO Authorized Inspector records the time the meter was taken out of service, the output level of the generator, if and the time that the meter was placed back in service. All of the following information is recorded on the Site Verification Data Sheet. C3.1 Accuracy Test CAISO Authorized Inspector either performs or witnesses the performance of a calibration test on the revenue meter for watt-hour and var-hour function for both directions of energy flow (delivered/received). Tests should be performed with and without compensation applied to get a true test of the metered site. Utilize a CAISO approved test set to perform the calibration test. C3.2 Transformer and Line Loss Compensation Settings & Instrument Transformer Correction Factors The Transformer and Line Loss Correction Factors compensation values, in addition to the correction factors from the meter are compared to the values found in the owner’s documentation for the specific location. If the values differ, the CAISO Authorized Inspector makes a note in the remarks section of the Site Verification Data Sheet.
BPM%20for%20Metering_v17_Clean.docx