The Constant Current Regulator is the heart of every series AGL circuit — it does not just supply power, it maintains a precise, regulated current through the entire circuit regardless of load, temperature, or step command. Division 03 verifies that the CCR is correctly installed, electrically safe, correctly supplied, capable of holding the required output current, stable under operating conditions, responsive to intensity-step commands and load changes, capable of detecting and protecting against faults, and correctly integrated with local, remote, and communication/control functions.
Philosophy: a CCR should never be accepted solely because it produces output current. Division 03 treats the CCR as a performance-critical AGL power-control device, not a supply panel — acceptance demands correct supply, correct current, regulation, stability, step control, protection, alarms, local control, remote control, communication, and safety, all verified and documented together.
Every CCR moves through the same underlying sequence, from first inspection to final functional acceptance, before it is released for system-level integration testing.
The CCR commissioning evidence should establish five layers before the unit is released to system-level commissioning.
| Layer | Question It Answers |
|---|---|
| 1. Installation Integrity | Is the CCR correctly installed? |
| 2. Electrical Integrity | Is the CCR electrically safe and correctly connected? |
| 3. Regulation Performance | Does it produce and maintain the required circuit current? |
| 4. Control & Protection | Does it respond correctly to commands, faults, alarms, and emergency conditions? |
| 5. Integration Readiness | Can it communicate correctly with the larger AGL control system? |
Two conditions should be closed out before energization and functional testing of the CCR begins.
Grouped by commissioning focus, in the order the CCR is normally worked through — click any topic to expand its verification checks and acceptance criteria.
Acceptance Criteria: the input supply satisfies the approved project/design requirement and the CCR manufacturer's requirement before energization proceeds.
Acceptance Criteria: measured output current at every applicable step agrees with the CCR indication and satisfies the project/manufacturer criterion.
Acceptance Criteria: the CCR maintains the commanded series-circuit current within the applicable acceptance limits at every step, repeatably.
Acceptance Criteria: output remains within the applicable specified operating limits without unexplained fluctuation or nuisance tripping.
Acceptance Criteria: every commanded intensity level produces the correct CCR output current, indication, and control response, in the correct sequence.
Acceptance Criteria: every tested transition settles cleanly at the correct final current, with correct indication and no abnormal delay, trip, or instability.
Acceptance Criteria: every applicable alarm generates, indicates locally and remotely as designed, and resets correctly.
Acceptance Criteria: the displayed fault corresponds logically with the actual test condition, and the unit resets and recovers correctly.
Acceptance Criteria: the CCR enters the required safe condition when an emergency command is initiated, and recovers correctly.
Acceptance Criteria: every remote command produces the correct CCR response with confirmed status feedback through the authorized remote-control interface.
Acceptance Criteria: the local control interface produces correct, unambiguous control behavior consistent with the selected local/remote mode.
Acceptance Criteria: the display accurately and consistently communicates the CCR's actual operating status.
Acceptance Criteria: the CCR's own communication function is verified correct — full ALCMS/SCADA/PLC system integration is confirmed separately in Divisions 14 and 19.
Acceptance Criteria: CCR protective earthing is verified sound before and during commissioning; comprehensive earth continuity/resistance/bonding testing is completed by the dedicated Earthing & Bonding division.
Acceptance Criteria: correct supply + correct current + regulation + stability + step control + protection + alarm + local control + remote control + communication + safety, all verified and documented together — a CCR is never accepted on output current alone.
Acceptance Criteria: every item across all seven checklist sections is closed out or formally accepted with documented conditions before the CCR is released.
Acceptance Criteria: the report provides complete traceability from identification through test results to final sign-off, and closes Division 03 for release to system-level commissioning.
Division 03 runs as a single continuous sequence from documentation review through to release for system-level commissioning.
Review CCR identification and documentation package.
Inspect physical condition and installation.
Verify input supply, earth, insulation, control wiring.
Apply power under authorized, controlled conditions.
Verify output current, regulation, and stability.
Verify intensity steps, transitions, and load response.
Verify protection, alarms, faults, and emergency operation.
Verify local control, remote control, display, communication.
Confirm all requirements and record PASS/FAIL/CONDITIONAL status.
Checklist and report signed off — release to system-level commissioning.
Quick answers about Division 03 — CCR Testing & Commissioning in the AGL Testing & Commissioning Manual.
Division 03 of the AGL Testing & Commissioning Manual covers CCR Testing & Commissioning. The Constant Current Regulator is the heart of every series AGL circuit — it does not just supply power, it maintains a precise, regulated current through the entire circuit regardless of load, temperature, or step command. Division 03 verifies that the CCR is correctly installed, electrically safe, correctly supplied, capable of holding the required output current, stable under operating conditions, responsive to intensity-step commands and load changes, capable of detecting and protecting against faults, and correctly integrated with local, remote, and communication/control functions. It contains 22 topics (TC-CCR-001 to TC-CCR-022) organised into 7 groups (A–G), each topic with its own verification checks.
A CCR should never be accepted solely because it produces output current. Division 03 treats the CCR as a performance-critical AGL power-control device, not a supply panel — acceptance demands correct supply, correct current, regulation, stability, step control, protection, alarms, local control, remote control, communication, and safety, all verified and documented together.
Every CCR moves through the same underlying sequence, from first inspection to final functional acceptance, before it is released for system-level integration testing. Steps: Inspect → Verify Supply → Verify Electrical Integrity → Energize → Establish Output → Verify Regulation → Verify Steps → Verify Load Response → Verify Protection/Alarms → Verify Control/Comms → Functional Acceptance. Focus areas: Installation integrity; Electrical integrity; Regulation performance; Control & protection; Integration readiness.
Division 03 has 22 topics in 7 groups. A — Pre-Energization & Supply: CCR Pre-Energization Inspection, CCR Input-Supply Verification. B — Output & Regulation Performance: CCR Output-Current Verification, CCR Current Regulation Test, CCR Output Stability Test, CCR Intensity-Step Verification. C — Transition & Load Response: CCR Step Transition Test, CCR Load-Response Test. D — Protection, Alarms & Faults: CCR Protection-Function Test, CCR Alarm Test, CCR Fault Indication Test. E — Emergency & Control: CCR Emergency-Operation Test, CCR Remote-Control Test, CCR Local-Control Test. F — Display, Communication & Electrical Integrity: CCR Display Verification, CCR Communication Test, CCR Earth Verification, CCR Insulation Test, CCR Control-Wiring Test. G — Acceptance & Closeout: CCR Functional Acceptance, CCR Commissioning Checklist, CCR Commissioning Report.
The CCR commissioning evidence should establish five layers before the unit is released to system-level commissioning. 1. Installation Integrity: Is the CCR correctly installed?; 2. Electrical Integrity: Is the CCR electrically safe and correctly connected?; 3. Regulation Performance: Does it produce and maintain the required circuit current?; 4. Control & Protection: Does it respond correctly to commands, faults, alarms, and emergency conditions?; 5. Integration Readiness: Can it communicate correctly with the larger AGL control system?
Two conditions should be closed out before energization and functional testing of the CCR begins. Do Not Energize If: Major physical damage exists; Incorrect equipment has been installed; Input/output wiring is uncertain; Earth connection is incomplete; Control wiring is unidentified; Required covers or safety barriers are missing; Critical punch-list items remain open.
Division boundary: Division 03 verifies the CCR unit itself and its own communication function; Division 14 verifies complete ALCMS system integration; Division 19 verifies complete SCADA/system-level integration; The dedicated Earthing & Bonding division provides comprehensive earth continuity and resistance testing; A CCR is never accepted on output current alone — see the acceptance principle below.
Division 03 runs as a single continuous sequence from documentation review through to release for system-level commissioning. (1) Identification & Docs — Review CCR identification and documentation package; (2) Pre-Energization — Inspect physical condition and installation; (3) Supply & Integrity — Verify input supply, earth, insulation, control wiring; (4) Controlled Energization — Apply power under authorized, controlled conditions; (5) Output & Regulation — Verify output current, regulation, and stability; (6) Steps & Transitions — Verify intensity steps, transitions, and load response; (7) Protection & Alarms — Verify protection, alarms, faults, and emergency operation; (8) Control & Comms — Verify local control, remote control, display, communication; (9) Functional Acceptance — Confirm all requirements and record PASS/FAIL/CONDITIONAL status; (10) Release — Checklist and report signed off — release to system-level commissioning.
CCR testing is where constant current regulation becomes a verified, trusted process.
Build the technical knowledge to understand output current accuracy, brightness-step control, isolation integrity, and protection functions, and how CCR performance underpins every series circuit built on it.
Test with precision. Regulate with confidence. Commission with certainty.
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