IEC, IEEE and the grid code read in a single pass
From package to work product
A guaranteed loss figure is not a specification, it is a price. Miss the penalty attached to it and the cost surfaces once the contract is running.
Projects › Your Company Ltd.
Missing Docs Bid / No-Bid Tech Params Quality & Compliance Logistics Docs Requirements Contradictions 4 Other
OverviewDistribution transformerPower transformerMV switchgearAuxiliary supplyStandards & Testing
Distribution transformer
Technical parameters Search parameters…
Item / Parameter RatingHV / LVVector GroupImpedanceCoolingTap ChangerStandardSubstation / Bay Ref
TR-1101 2.5 MVA p.2 33 / 11 kV p.2 Dyn11 p.2 6.0% ± 7.5% p.2 ONAN p.2 Off-circuit ±2 × 2.5% p.2 +1 IEC 60076-1/-2/-3… more ↓ p.3 +2 Substation Alpha; Bay 11-… more ↓ p.3 +1
TR-1102 2.5 MVA p.2 33 / 11 kV p.2 Dyn11 p.2 6.0% ± 7.5% p.2 ONAN p.2 Off-circuit ±2 × 2.5% p.2 +1 IEC 60076-1/-2/-3… more ↓ p.3 +2 Substation Alpha; Bay 11-… more ↓ p.3 +1
TR-1205 10 MVA p.3 132 / 33 kV p.3 YNd11 p.3 10.5% ± 7.5% p.3 ONAN / ONAF p.3 On-load ±9 × 1.67% p.3 +1 IEC 60076 + short-circuit… more ↓ p.4 +2 Substation Beta; Bay 33-… more ↓ p.4 +1
TR-1206 10 MVA p.3 132 / 33 kV p.3 YNd11 p.3 10.5% ± 7.5% p.3 ONAN / ONAF p.3 On-load ±9 × 1.67% p.3 +1 IEC 60076 + short-circuit… more ↓ p.4 +2 Substation Beta; Bay 33-… more ↓ p.4 +1
SW-2301 1250 A p.4 11 kV p.4 n/a — 25 kA / 3 s p.4 Air insulated p.4 n/a — IEC 62271-200, IAC AFLR p.4 +1 Substation Alpha; Panel 4-… more ↓ p.5 +1
SW-2304 630 A p.4 11 kV p.4 n/a — 25 kA / 3 s p.4 Air insulated p.4 n/a — IEC 62271-200, IAC AFLR p.4 +1 Substation Alpha; Panel 4-… more ↓ p.5 +1
TR-3401 500 kVA p.5 11 / 0.4 kV p.5 Dyn11 p.5 not stated — Cast resin, AN p.5 Off-circuit ±2 × 2.5% p.5 IEC 60076-11 p.5 +1 Auxiliary supply; Bay AUX-… more ↓ p.5 +1
Every value traced back to the page it came from
Ratings and impedance
Every unit and panel, read against the IEC series.
Loonar takes the distribution transformers, grid units, switchgear and auxiliary supply out of the tender and lays them out tag by tag: rating, HV and LV voltages, vector group, impedance, cooling, tap changer and the IEC standard each one answers to. The bay reference from the single line diagram sits beside the rating, and every value carries its page.
Technical deviations
Sixty-two items become nineteen decisions.
Loonar rolls the values up against your type test evidence, so short-circuit withstand is one row covering the whole 132/33 kV scope rather than a check per unit. A report held for an 8 MVA design and not the 10 MVA, on-load tap changers at twenty-two weeks, a loss penalty you cannot underwrite, cast resin below your smallest frame: each one is a deviation with its items and the register behind it.
Projects › Your Company Ltd.
Deviations & decisionsScope of supply
Full deviation 4Partial deviation 10Missing info 14Compliant 12 Show all 40
All 40 Technical 19 Quality & compliance 11 Logistics 3 Documents 5 Other 2
Technical 19 Product Matching, against the catalogue
RequirementApplies toYou supplyStatus
Short-circuit withstand Type test report to IEC 60076-5 on an identical design 18 of 62 items 132 / 33 kV units Report held for a 8 MVA unit; the 10 MVA design is not covered Type test certificates, short-circuit index Full deviation suggested Cannot be doneCosts extra
Tap changer On-load ±9 × 1.67%, motor driven with AVR interface 18 of 62 items On-load tap changers are bought in, 22-week lead time Supply chain register, OLTC vendors Partial deviation suggested Cannot be doneCosts extra
No-load losses Guaranteed with a penalty of £8,000 per kW exceeded 36 of 62 items We guarantee losses to IEC tolerance but not against a penalty rate Commercial policy, loss guarantees Partial deviation suggested Cannot be doneCosts extra
Vector group Dyn11 for distribution, YNd11 for grid units 44 of 62 items Both vector groups are standard in the offered range Product catalogue, winding configurations Compliant suggested
Impedance on auxiliary units not stated in the RFQ 8 of 62 items Missing We assume 4% to suit the downstream board Ask the client to confirm before we finalise the design Missing info suggested Cannot be doneCosts extra
Internal arc classification IEC 62271-200 IAC AFLR 25 kA / 1 s 14 of 62 items Standard classification for the offered panel range Type test certificates, switchgear index Compliant suggested
Cooling Cast resin AN for the auxiliary transformer 8 of 62 items Cast resin is offered but not below 630 kVA in this voltage class Product catalogue, dry type range Full deviation suggested Cannot be doneCosts extra
Projects › Your Company Ltd.
T&C Analysis
Conflicting 4Additional Clause 8Aligned 28Needs review 6 Risk High 4Medium 8Low 34
ClauseClient clauseStatusAssessment & proposed rewording
13. Performance > 13.1 Loss Penalties Losses exceeding the guaranteed figures shall be capitalised at £8,000 per kW and deducted from the contract price. Conflicting Capitalised loss penalties at this rate can exceed the margin on a single unit. Standard terms guarantee losses to IEC tolerance without a capitalisation formula. Assessed against Your_Company_GeneralTermsConditionsOfSale.pdf · p.4
8. Liability > 8.2 Network Outage Supplier shall indemnify the network operator for customer minutes lost caused by equipment failure. Conflicting Customer minutes lost is a regulatory penalty passed through as consequential loss. It is excluded under standard terms in every case. Assessed against Your_Company_GeneralTermsConditionsOfSale.pdf · p.6
9. Warranty > 9.1 Warranty Period 60 months from energisation, extended by any period out of service. Conflicting A rolling five-year warranty that pauses during outages has no defined end date. Standard warranty is 12 months from commissioning or 18 months from delivery. Assessed against Your_Company_GeneralTermsConditionsOfSale.pdf · p.4
4. Testing > 4.1 Factory Acceptance Test Full routine and selected type tests shall be witnessed with 15 working days notice. Aligned Witnessed FAT with notice is standard for transformer orders and is already reflected in the test plan template. Assessed against Your_Company_ComplianceCapability.pdf · p.5
14. Spares > 14.2 Strategic Spares Supplier shall hold one complete spare unit in stock for five years at its own cost. Needs review Holding a spare grid transformer for five years carries a significant working capital cost. It should be quoted as a separate framework line. ✨ Reword with AI
6. Delivery > 6.3 Liquidated Damages 0.5% of unit price per week of delay, capped at 10% of unit price. Needs review Applying damages per unit rather than per order is favourable, but the 10% cap remains above the 5% standard position. Assessed against Your_Company_GeneralTermsConditionsOfSale.pdf · p.5
7. Payment > 7.1 Payment Terms Net 60 days with 20% released on approved drawings. Aligned A design-stage milestone with Net 60 balance terms is within the accepted range for regulated network buyers. Assessed against Your_Company_GeneralTermsConditionsOfSale.pdf · p.2
The clause register
The tender conditions, clause by clause.
Every clause is classified, risk rated and assessed against your standard positions. Losses capitalised at eight thousand pounds per kilowatt, customer minutes lost passed through as supplier liability, a five-year warranty that pauses during outages: the four clauses that carry real exposure surface above the twenty-eight that are already aligned.
Explore solutions
The rest of the range.
See what Loonar reads in your package.
Book 30 minutes and bring a real large RFQ. We run your own package through Loonar and show you the requirement list it builds, every value carrying its page and the standard behind it.
