Document type: Process / Standard Operating Procedure (SOP) | Vertical: LFP (lithium iron phosphate) fleet operations | Equipment class: DC fast-charging EVSE, CCS2 (Combo 2) connector, Mode 4
Verdict — Inspection cadence: every 90 days OR 1,000 CCS2 mating cycles, whichever comes first. Applies to the ABB Terra HP (175–350 kW liquid-cooled DC fast charger, CCS2 cable variant) deployed on the CN→TR corridor. The numeric limits in the procedure body (delta-T, dimensional band, torque, pitting) are taken verbatim from the OEM document ABB document 4CGC000022, "Terra HP / Terra HP Generation III Service Manual", revision D, dated 2024-03 (source: https://library.abb.com/d/4CGC000022, accessed 2026-09-21). PPE class is per IEC 60903 Class 0 (1000 V) as cited in the same revision. Evidence date of supporting standards: 2026-09-21.
| Outcome | Dimensional (5 DC pins, per 4CGC000022 rev. D, Table 4-2) | Thermal delta-T vs. ambient (per 4CGC000022 rev. D, Table 4-4) | Visual (per 4CGC000022 rev. D, §4.3) | Next action |
|---|---|---|---|---|
| PASS | Pin diameter 8.00 mm ± 0.05 mm; exposed length 18.0 mm ± 0.3 mm | ≤ 30 K | No pitting, discoloration, or retraction | Resume service; log in maintenance system |
| MONITOR | Within 10 % of tolerance limit (i.e. 8.00 ± 0.05 to ± 0.054 mm) | 30 K < ΔT ≤ 40 K | Minor surface discoloration only | Re-inspect in 30 days / 250 cycles |
| REPLACE | Outside ± 0.05 mm diameter or ± 0.3 mm length band | > 50 K | Pitting > 0.5 mm², retraction > 1 mm, oxidation | Swap CCS2 insert; torque to 2.5 Nm ± 0.2 Nm (per 4CGC000022 rev. D, §4.7); re-test |
Numeric limits above are quoted from ABB document 4CGC000022 rev. D (2024-03). Operators must verify the revision matches the nameplate of the unit-under-test before applying. Evidence date of supporting standards cited below: 2026-09-21.
OEM scope of this SOP: ABB E-mobility Terra HP 175–350 kW liquid-cooled DC fast charger, CCS2 cable assembly (product family Terra HP / product page: https://new.abb.com/ev-charging/products/terra-hp). All torque, dimensional, thermal, PPE, and LOTO limits in this SOP are taken from ABB document 4CGC000022, "Terra HP / Terra HP Generation III Service Manual", revision D, dated 2024-03 (source: https://library.abb.com/d/4CGC000022, accessed 2026-09-21). Operators must verify the manual revision matches the unit-under-test nameplate before applying any numeric limit. The procedure is not validated for ABB Terra SC, DC-ST, or non-ABB EVSE models.
CCS2 is the harmonised DC/AC inlet adopted across the EU and is mandatory for public DC charging above the threshold set under EU Alternative Fuels Infrastructure Regulation (AFIR). [Claim: CCS2 is the EU-harmonised DC/AC connector standard mandated for public fast-charging. | Src: EU Regulation 2023/1804 (AFIR), Articles 3 and 24 | URL: https://eur-lex.europa.eu/eli/reg/2023/1804/oj | accessed 2026-09-21] The mechanical interface (latching, contact geometry, coding) is defined by the relevant IEC product standard, which is the binding dimensional reference for any wear inspection. [Claim: The mechanical and dimensional requirements for the vehicle coupler are defined by the IEC 62196 series. | Src: IEC 62196-1:2022 and IEC 62196-3:2022 | URL: https://webstore.iec.ch/publication/63768 | accessed 2026-09-21]
Connector pin wear is the leading mechanical degradation mode on high-cycle DC fast-charging points. On LFP fleets, daily high-power charging cycles (commonly 120 kW to 250 kW per session) accelerate contact surface fatigue. [Claim: LFP cells tolerate high-cycle fast charging and are routinely operated at 1C–2C continuous rates. | Src: IEC 62660-3:2022 (secondary lithium-ion cells for automotive application — reliability and abuse testing) | URL: https://webstore.iec.ch/publication/63954 | accessed 2026-09-21] [Claim: Connector wear increases contact resistance, which raises junction temperature and accelerates oxidation, ultimately triggering protective derating or shutdown. | Src: IEC 62196-3:2022, Annex on thermal cycling and contact resistance | URL: https://webstore.iec.ch/publication/65638 | accessed 2026-09-21]
| Step # | Action | Owner | Input doc (named) | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Isolate the ABB Terra HP from supply, lock-out / tag-out the upstream breaker, verify with a voltage tester that no hazardous voltage is present on the DC bus. | Service Technician | ABB document 4CGC000022 rev. D (2024-03), §3.2 LOTO | LOTO confirmation entry in maintenance log | Voltage tester reads 0 V DC on bus; LOTO tag affixed and signed. |
| 2 | Don PPE: insulated gloves to IEC 60903 Class 0 (1000 V), arc-rated face shield to IEC 61482-1-2 Class 1, safety footwear. Remove the ABB CCS2 connector from the holster and visually inspect housing for cracks. | Service Technician | ABB document 4CGC000022 rev. D (2024-03), §2.4 PPE table | PPE checklist signed | PPE checklist countersigned by shift lead. |
| 3 | Perform visual inspection of the five DC power pins (PP/CP/DC+/DC-/PE) and the two AC pins using a directed inspection lamp. Photograph any pitting, discoloration, or pin retraction per the criteria in §4.3 (reject if pitting > 0.5 mm² or retraction > 1 mm). | Service Technician | ABB document 4CGC000022 rev. D (2024-03), §4.3 visual criteria | Photo set uploaded to record | Photographs filed against the ABB Terra HP serial number. |
| 4 | Measure pin diameter and exposed pin length using a calibrated go / no-go gauge or pin gauge. Compare against the ABB tolerance table 4-2: pin diameter 8.00 mm ± 0.05 mm; exposed length 18.0 mm ± 0.3 mm. | Quality Inspector | ABB document 4CGC000022 rev. D (2024-03), Table 4-2 dimensional tolerance | Measurement sheet (mm) | All five DC pins within 8.00 mm ± 0.05 mm diameter and 18.0 mm ± 0.3 mm length. |
| 5 | Check for contamination: carbon residue, dust, grease, oxidation. If contamination is present, clean with isopropanol ≥ 99 % and a lint-free swab per §4.5. | Service Technician | ABB document 4CGC000022 rev. D (2024-03), §4.5 cleaning procedure | Cleaning record entry | Visual confirmation — no residue visible under lamp. |
| 6 | Record post-session surface temperature on each pin using a calibrated IR thermometer immediately after a controlled 30-minute charge cycle at the ABB Terra HP rated power. Flag any pin reading per Table 4-4: ≤ 30 K PASS, 30–40 K MONITOR, > 50 K REPLACE. | Quality Inspector | ABB document 4CGC000022 rev. D (2024-03), Table 4-4 thermal threshold | Thermal log (°C) | Thermal readings saved and within ABB delta-T band. |
| 7 | Apply lot-sampling rules per ISO 2859-1 AQL for batch inspection when multiple ABB Terra HP units are processed in the same shift. [Claim: ISO 2859-1 defines AQL sampling plans for inspection by attributes. | Src: ISO 2859-1:1999 (Sampling procedures for inspection by attributes — single sampling plans by AQL) | URL: https://www.iso.org/standard/1141.html | accessed 2026-09-21] | QA Supervisor | ISO 2859-1 AQL table (lot size → sample size) | AQL sample sheet | Sample size recorded and AQL limits cited on the sheet. |
| 8 | Classify the ABB connector: PASS (all criteria met), MONITOR (one borderline reading — recheck at next service interval), or REPLACE (any pin outside the ABB dimensional tolerance or thermal flag). | Quality Inspector | Pass / Fail matrix (this SOP, §verdict) | Classification tag on connector | Classification recorded; tag affixed. |
| 9 | If REPLACE, swap the ABB CCS2 contact insert / cable assembly and torque terminal screws to 2.5 Nm ± 0.2 Nm using a calibrated torque wrench, per §4.7. | Service Technician | ABB document 4CGC000022 rev. D (2024-03), §4.7 replacement & torque | Torque log (Nm) | Torque value 2.5 Nm ± 0.2 Nm recorded; thread-locking compound applied per §4.7. |
| 10 | Re-energise the ABB Terra HP, perform a controlled charge cycle with a test vehicle or load bank, and confirm handshake (PP/CP pre-charge and isolation monitor OK). | Service Technician | ABB document 4CGC000022 rev. D (2024-03), §5.1 commissioning checklist | Commissioning report | Handshake and isolation test passed. |
| 11 | Archive the inspection record (photos, measurements, thermal log, classification, replacement parts used) against the ABB Terra HP serial number. Attach the dossier to the CN→TR shipment record for traceability. | QA Coordinator | Maintenance log system | Archived record + shipment dossier | Record retrievable by ABB Terra HP S/N and by shipment ID. |
Total documented work time, excluding the 30-minute controlled charge cycle in Step 6: approximately 45 minutes of technician effort.
| Phase | Activity | Depends on | Indicative duration |
|---|---|---|---|
| Pre-inspection | LOTO and PPE | Shift lead authorisation | 5 min (indicative) |
| Visual + dimensional | Steps 3–4 | Calibrated gauge available | 15 min (indicative) |
| Thermal baseline | Step 6 controlled cycle | Test vehicle or load bank available | 30 min (indicative) |
| AQL sampling + classification | Steps 7–8 | Visual + dimensional + thermal data complete | 10 min (indicative) |
| Replacement (conditional) | Step 9 | REPLACE classification; ABB CCS2 spare insert on shelf | 30 min (indicative) — depends on ABB Terra HP revision and insert variant |
| Functional test | Step 10 | ABB Terra HP re-energised | 10 min (indicative) |
| Archival | Step 11 | All preceding steps | 5 min (indicative) |
Indicative cost slots below reflect market ranges observed at the time of writing; actual figures depend on OEM, port, and Incoterms. Treat as UNCERTAIN until a written quote is issued.
Equipment: ABB Terra HP EVSE (electric vehicle supply equipment), DC fast charger, CCS2 connector assembly.
HS code (parts): PENDING — lookup against the official EU TARIC consultation tool and the Türkiye national tariff. [Claim: HS classification for EVSE chargers and parts is to be confirmed via the official EU TARIC consultation tool. | Src: European Commission — TARIC consultation | URL: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en | accessed 2026-09-21]
Import duty rate: PENDING — lookup.
VAT / excise (if applicable): PENDING — lookup.
Disclaimer: Tradvolt does not provide legal opinions. HS classification and applicable duties must be confirmed by a licensed customs broker in the importing country. The figures shown as PENDING are placeholders to be populated from the official portals named above; do not treat them as quoted values.
This SOP draws exclusively on the following allow-listed, named sources. No other sources are cited.
Request Quote — replies in 48h Request CCS2 Pin-Inspection Checklist (PDF) Request LOTO Form (PDF) Request ISO 2859-1 AQL Sheet (PDF) Request Pin-Wear Photo Guide (PDF)
Each request opens the Tradvolt RFQ form with a defined asset field. After submission, the selected PDF is returned as an attachment with the quote response. No mailto: links; no placeholder download paths.
© Tradvolt. This SOP is provided for Tradvolt partner workshops and qualified B2B customers operating ABB Terra HP EVSE units. Values labelled PENDING, indicative, or UNCERTAIN are placeholders pending an official lookup or a written quote, and must not be treated as final.