Specification History
| SWS Version | Created | Specification ID | Title | Specification | Objective | Rationale | Status |
|---|---|---|---|---|---|---|---|
| Version 2025 | 05/15/2025 - 12:31 | 0.0501.1m | Commissioning and Testing | Installer shall ensure that the installed equipment matches specifications Installer shall conduct electrical testing, including but not limited to: Conductor insulation test using a megohm meter on all home-run wiring to ensure no leakage currents to earth (Pos-to-GND and Neg-to-GND resistance should be greater than specified in the design) Operating voltage and polarity of each string measured and documented. Compare voltage measurement to reference value Grounding resistance is less than specified in the design Operating current of each string is measured and documented. Compare current measurement to reference value Installer shall conduct whole system performance test, including but not limited to: Inverter’s internal power meter and display are confirmed using independent meters (once complete, inverter-displayed power readings can be used for subsequent reporting) System output under actual conditions is within 5% of expected, calculated performance. Actual power delivery could be from faceplate of inverter or separate power measurement Check inverter display and operational indicators for status and any error messages. Record operating status PV array maximum DC power has been confirmed to be within inverter specifications Installer shall validate that the monitoring system is set up properly and is operational. |
Verify proper operation and system performance |
The committee combined Commissioning and Testing into a single, comprehensive specification and added more details about verification measures. The new language includes additional details on the process for verifying proper installation and system performance, including specific electrical tests (voltage, current, insulation, and grounding resistance), inverter performance checks, and monitoring system validation. Lettering detail ID was modified to align with correct order. | Red Line |
| Version 2025 | 10/12/2023 - 16:40 | 0.0501.1m | Testing | Perform electrical tests to verify proper operation and system performance Tests include open circuit voltage, operating current, resistance of grounding system (should be <25 ohms), and resistance of electrical insulation (should be >1 Megohm) Measured voltage shall be compared to reference voltage corrected for temperature Measured current shall be compared to reference current corrected for insolation (sunlight level) , basic_html |
Verify proper operation and system performance , basic_html |
Red Line | |
| Version 2025 | 10/12/2023 - 16:40 | 0.0501.1m | Testing | Perform electrical tests to verify proper operation and system performance Tests include open circuit voltage, operating current, resistance of grounding system (should be <25 ohms), and resistance of electrical insulation (should be >1 Megohm) Measured voltage shall be compared to reference voltage corrected for temperature Measured current shall be compared to reference current corrected for insolation (sunlight level) , basic_html |
Verify proper operation and system performance , basic_html |
Red Line | |
| Version 2025 | 10/12/2023 - 16:40 | 0.0501.1m | Testing | Perform electrical tests to verify proper operation and system performance Tests include open circuit voltage, operating current, resistance of grounding system (should be <25 ohms), and resistance of electrical insulation (should be >1 Megohm) Measured voltage shall be compared to reference voltage corrected for temperature Measured current shall be compared to reference current corrected for insolation (sunlight level) , basic_html |
Verify proper operation and system performance , basic_html |
Red Line | |
| Version 2025 | 10/12/2023 - 16:40 | 0.0501.1n | Cleaning and Disposal | Clear jobsite of construction waste Permanently remove all waste materials from job site and recycle or dispose of removed materials in accordance with local and federal law , basic_html |
Old equipment is permanently removed from service, protect the environment, and comply with regulation , basic_html |
Red Line |