Transformer-to-Fixture Connection
AGL Secondary Connector Kit for Airfield Lighting
Connection interface between isolating transformer and fixture
Secondary connector kits for connection between isolating transformers and airfield light fixtures, selected for cable and fixture compatibility.
Supplied by Precision AGL Solutions
Product Overview
AGL Secondary Connector Kit
What It Is
AGL Secondary Connector Kit provides the connection interface between the secondary side of an airfield lighting isolating transformer and the lead or connection point of an individual airfield light fixture.
It transfers power from the isolating transformer to the fixture while maintaining the required insulation, sealing and mechanical integrity of the connection.
Selection Depends On
Correct selection depends on the transformer interface, secondary lead construction, fixture connection requirements, cable dimensions and installation environment.
In a typical series-circuit installation the isolating transformer separates the fixture from the primary high-voltage circuit; the secondary connector provides the final electrical interface. Select it as part of the complete transformer-to-fixture connection, not as an independent component.
CCRConstant Current Regulator
Primary CableSeries circuit
Primary ConnectorPrimary interface
Isolating TransformerL-830
Secondary LeadTransformer secondary
Secondary ConnectorFinal interface
AGL FixtureLight fixture
Applications
Where Secondary Connector Kits Are Used
Runway edge, threshold & endRunway edge, threshold and end lights.
Runway centreline & TDZCentreline and touchdown zone lights.
Taxiway edge & centrelineTaxiway series-circuit fixtures.
Stop bar & runway guardStop bar and runway guard lights.
Approach lightingApproach centreline and threshold lights.
Other compatible fixturesOther compatible series-circuit AGL fixtures.
Also Suitable for Consideration In
- New airport lighting installations
- AGL rehabilitation projects
- Fixture replacement
- Transformer replacement
- Maintenance and spare-parts programs
Suitable Installations
Secondary connector kits can be used with suitable series-circuit airfield lighting installations. Confirm compatibility with the specific transformer and fixture before ordering.
Transformer-to-Fixture Connection
Coordinate the Complete Connection
Isolating Transformer + Secondary Lead + Connector + Fixture
Selection Should Consider
- Transformer secondary interface
- Secondary lead construction
- Connector configuration
- Fixture lead configuration
- Fixture electrical requirements
- Cable/lead dimensions
- Insulation requirements
- Sealing requirements
- Installation environment
This coordinated approach helps prevent compatibility problems during installation or replacement.
Cable & Lead Compatibility
Confirm the Secondary Lead Before Selecting
Confirm
- Lead type
- Conductor size
- Conductor construction
- Insulation type
- Outside diameter
- Lead length, where applicable
- Connector termination arrangement
- Fixture connection arrangement
Why It Matters
Selection depends heavily on the construction of the transformer secondary lead and fixture connection.
For replacement work, inspect the existing transformer lead and fixture connector before ordering.
Fixture Compatibility
The Connector Must Suit the Specific Fixture
Compatibility May Depend On
- Fixture manufacturer
- Fixture model
- Fixture lead configuration
- Fixture wattage
- Connector arrangement
- Required electrical characteristics
- Physical connection dimensions
Fixture Changes
Where a fixture is replaced with a different model, review the secondary connector rather than automatically reusing the existing connector.
Insulation
Insulation for the Secondary Circuit and Fixture Connection
Relevant Considerations
- Connector insulation material
- Dielectric characteristics
- Insulation resistance
- Secondary circuit voltage
- Environmental exposure
- Cable insulation compatibility
Confirm the required electrical characteristics from the selected connector’s technical documentation.
Sealing & Environmental Protection
Transformer Pits, Fixture Bases and Underground Locations
Secondary connections may be exposed to moisture, water, soil and temperature changes. Suitable sealing helps protect against contamination and moisture ingress.
Depending on the Selected Connector Configuration
- Cable entry sealing
- Connector-body sealing
- Moisture resistance
- Environmental protection
- Mechanical protection
- Underground installation
- Transformer pit installation
- Fixture-base installation
The complete connection should meet the environmental requirements of the installation.
Mechanical Connection
A Secure Mechanical Interface
Installation Should Avoid
- Excessive cable tension
- Sharp bends
- Mechanical stress on connector bodies
- Damage to cable insulation
- Improperly supported leads
- Loose connections
Cable Routing
Route cable with sufficient flexibility for fixture removal and maintenance without transferring unnecessary mechanical stress to the connector.
Installation
Installation Procedure
- Confirm the series circuit is de-energised and locked out at the regulator under the site permit-to-work
- Verify the connector configuration
- Confirm transformer and fixture compatibility
- Check secondary lead dimensions and construction
- Prepare the cable or lead according to the approved procedure
- Install connector components in the specified sequence
- Complete the electrical connection
- Install insulation and sealing components
- Verify mechanical security
- Inspect the completed assembly
- Perform required electrical testing
Follow the approved connector manufacturer’s procedure. Correct cable preparation and connector assembly are essential to long-term connection reliability.
Pit & Base Installation
Transformer Pit and Fixture Base Installation
Transformer Pit
- Moisture exposure
- Water accumulation
- Drainage
- Cable routing
- Transformer lead position
- Connector accessibility
- Mechanical protection
- Separation from primary connections
Allow maintenance personnel to inspect and disconnect the fixture without damaging the transformer lead or connector.
Fixture Base / Mounting Can
- Connector clearance
- Cable bend radius
- Fixture removal requirements
- Mechanical protection
- Moisture exposure
- Correct lead routing
- Connector accessibility
The connection should not interfere with fixture installation, adjustment or routine maintenance.
Technical Data
AGL Secondary Connector Kit Specification
| Parameter | Specification |
|---|---|
| Product Type | AGL Secondary Connector Kit |
| Application | Transformer-to-fixture secondary connection |
| Connector Configuration | Model/project-specific |
| Cable/Lead Compatibility | According to selected connector |
| Conductor Range | Configuration-specific |
| Lead Construction | Compatible secondary lead required |
| Insulation | Model-specific |
| Sealing | According to selected kit |
| Fixture Compatibility | According to fixture connection arrangement |
| Transformer Compatibility | According to transformer secondary interface |
| Installation Method | Manufacturer/project specified |
| Dimensions | Model-specific |
| Weight | Model-specific |
| Environmental Suitability | According to installation requirements |
| Documentation | Datasheet / installation instructions as applicable |
Selection Procedure
Provide the Following for Accurate Selection
1. Identify the Transformer
Provide the isolating transformer type, rating and available secondary connection details.
2. Identify the Fixture
Provide the fixture manufacturer and model, if available.
3. Confirm Fixture Load
Confirm the fixture wattage or electrical characteristics where required.
4. Identify the Secondary Lead
Provide the lead construction, conductor size and outside diameter where available.
5. Confirm the Connection Arrangement
- Transformer-to-fixture
- Transformer replacement
- Fixture replacement
- Maintenance replacement
- New installation
6. Confirm Installation Environment
- Transformer pit
- Fixture base
- Underground installation
- Protected enclosure
- Other approved airfield location
New & Replacement Applications
Plan Interfaces Before Installation Begins
New Installations
Perform connector selection as part of the complete lighting system design. Coordinate:
- Light fixture
- Isolating transformer
- Secondary lead
- Secondary connector
- Fixture base
- Primary connector
- Primary cable
- CCR
This ensures the electrical and mechanical interfaces are compatible before installation begins.
Replacement Work
Identify the existing connector before ordering. Useful information:
- Existing connector photographs
- Transformer nameplate
- Fixture nameplate
- Fixture model
- Secondary lead dimensions
- Existing connector markings
- Cable/lead construction
- Installation location
If the replacement fixture or transformer differs from the original equipment, reassess connector compatibility. See Replacement Connector Kit.
Commissioning & Testing
Check the Completed Transformer-to-Fixture Connection
Typical Checks May Include
- Visual inspection
- Connector assembly verification
- Cable/lead condition
- Mechanical security
- Sealing condition
- Insulation testing
- Continuity testing where applicable
- Fixture operation
- Series-circuit performance
Testing should follow the approved airport maintenance and commissioning procedure.
Maintenance
Incorporate Into Routine AGL Maintenance
Check For
- Physical connector damage
- Moisture ingress
- Damaged insulation
- Loose connection
- Corrosion or contamination
- Cable stress
- Mechanical damage
- Fixture lead deterioration
- Evidence of overheating or electrical distress
Inspect connections whenever the associated fixture or transformer is removed or replaced.
Troubleshooting
Symptoms and Possible Causes
Fixture Not Operating
- Failed secondary connector
- Damaged secondary lead
- Poor connector installation
- Transformer secondary problem
- Fixture fault
- Primary circuit fault
- Incorrect connection
Intermittent Fixture Operation
- Loose connection
- Damaged connector
- Cable/lead movement
- Moisture ingress
- Poor sealing
- Damaged conductor
- Fixture connection problem
Repeated Connector Failure
- Incorrect connector selection
- Incorrect lead compatibility
- Mechanical stress
- Excessive cable tension
- Moisture exposure
- Improper installation
- Fixture movement
- Transformer interface problems
Investigate the complete transformer-to-fixture connection rather than replacing the connector alone.
Procurement Checklist
When Requesting an AGL Secondary Connector Kit, Provide
Information Required
- Isolating transformer model/type
- Transformer rating
- Transformer secondary lead information
- Fixture manufacturer
- Fixture model
- Fixture wattage
- Secondary cable/lead size
- Cable/lead construction
- Existing connector identification
- Installation environment
- Required quantity
- Project or airport specification
For replacement applications, photographs of the transformer lead, existing connector and fixture connection can significantly assist compatibility checking.
Documentation
Technical Documentation
Depending on the Selected Connector Configuration
- Product datasheet
- Connector dimensional drawing
- Cable/lead compatibility information
- Transformer compatibility information
- Fixture compatibility information
- Installation instructions
- Assembly procedure
- Testing requirements
- Compliance documentation
Project-specific documentation can be provided as part of the technical submittal where required.
Safety
Electrical Safety — Isolation and Lock-Out
WARNING — never open a live series circuit. An open series circuit driven by a constant-current regulator can produce dangerously high voltage. Opening, cutting or disconnecting any part of an energised circuit can cause serious injury or death and damage equipment.
- De-energise the circuit at the regulator and apply the site lock-out / tag-out (LOTO) procedure before any work
- Where the circuit must be isolated or shorted, use the series circuit cut-out switch or approved isolation device — not an improvised bypass
- Verify the circuit is de-energised and the output is isolated before touching conductors, connectors, splices or transformers
- Do not disconnect or reconnect a fixture's secondary connector while the series circuit is energised: an open secondary on a series isolating transformer can develop hazardous voltage and damage the transformer
- Work only under the airport's permit-to-work system, using qualified personnel and the manufacturer's instructions
- Follow the applicable national electrical safety regulations and site procedures
Standards & Project Requirements
Evaluate Against the Project Specification
Secondary connector requirements should be evaluated against the airport project specification and the requirements of the associated AGL equipment.
Depending on the Project, Requirements May Include
- FAA AC 150/5345-26E (L-823 connectors, including transformer-lead and fixture-lead connectors), AC 150/5345-7F (L-824 cable) and AC 150/5345-47C (isolation transformers) – verify current editions
- ICAO Annex 14 Vol. I and Doc 9157 Part 5 (Electrical Systems)
- Airport authority standards
- National electrical requirements
- AGL equipment manufacturer’s requirements
- Project-specific installation procedures
Important: verify the applicable specification and revision before procurement and installation.
FAQ
AGL Secondary Connector Kit — Frequently Asked Questions
What is an AGL secondary connector kit?
It provides the connection interface between the secondary side of an airfield lighting isolating transformer and the lead or connection point of an individual light fixture. It transfers power from the transformer to the fixture while maintaining the required insulation, sealing and mechanical integrity.
How is a secondary connector different from a primary connector?
The primary connector sits on the series-circuit cable side, while the secondary connector is the final interface between the transformer secondary lead and the fixture. See the primary connector kit (L-823) page.
What determines the correct secondary connector?
The transformer interface, secondary lead construction, fixture connection requirements, cable dimensions and installation environment. Confirm the lead type, conductor size and construction, insulation type, outside diameter, length where applicable, and the connector termination and fixture connection arrangement.
Can I reuse the existing connector when changing the fixture?
Not automatically. Compatibility can depend on the fixture manufacturer, model, lead configuration, wattage and connector arrangement, so where a fixture is replaced with a different model, review the secondary connector rather than reusing the existing one. Likewise, if a replacement fixture or transformer differs from the original equipment, reassess compatibility.
Where are secondary connector kits used?
Runway edge, threshold, end, centreline and touchdown zone lights, taxiway edge and centreline fixtures, stop bar and runway guard lights, approach lighting, and other compatible series-circuit fixtures, in new installations, rehabilitation, fixture and transformer replacement and spares programmes.
How should a secondary connector be installed?
Confirm the circuit is de-energised and locked out at the regulator, verify the connector configuration and compatibility, check the lead dimensions and construction, prepare the lead per the approved procedure, install the components in the specified sequence, install insulation and sealing components, verify mechanical security and inspect and test the assembly. Follow the connector manufacturer procedure.
How do I avoid moisture problems in pits and bases?
Secondary connections may be exposed to moisture, water, soil and temperature changes, so use suitable cable entry and connector-body sealing and consider water accumulation, drainage, cable routing and accessibility in the transformer pit or fixture base. Allow maintenance personnel to inspect and disconnect the fixture without damaging the lead or connector.
What causes repeated connector failure?
Incorrect connector selection, incorrect lead compatibility, mechanical stress, excessive cable tension, moisture exposure, improper installation, fixture movement or transformer interface problems. Investigate the complete transformer-to-fixture connection rather than replacing the connector alone.
What is checked after installation?
Visual inspection, connector assembly verification, lead condition, mechanical security, sealing condition, insulation testing, continuity testing where applicable, fixture operation and series-circuit performance, following the approved airport maintenance and commissioning procedure.
Is it safe to disconnect a fixture secondary connector while the circuit is energised?
No. An open secondary on a series isolating transformer can develop hazardous voltage and damage the transformer, and an open series circuit driven by a constant-current regulator can produce dangerously high voltage. De-energise at the regulator, apply lock-out / tag-out and work under the permit-to-work system. See the electrical safety warning on this page.
Which standards apply?
Depending on the project, FAA AC 150/5345-26E (L-823 connectors, including transformer-lead and fixture-lead connectors), AC 150/5345-7F (L-824 cable) and AC 150/5345-47C (isolation transformers), ICAO Annex 14 Volume I and Doc 9157 Part 5, together with airport authority standards and manufacturer requirements. Verify current editions before procurement.
What should I provide when requesting a secondary connector kit?
The isolating transformer model and rating, the transformer secondary lead information, the fixture manufacturer, model and wattage, the secondary lead size and construction, existing connector identification, installation environment, quantity and project specification. For replacements, photographs of the transformer lead, existing connector and fixture connection help.
Why Precision AGL Solutions
Compatibility Across the Transformer-to-Fixture Connection
Precision AGL Solutions supplies components used throughout airport airfield ground lighting systems. For secondary connector requirements, we can assist with:
Our Support
- Transformer-to-fixture compatibility
- Secondary connector selection
- Fixture interface review
- Secondary lead compatibility
- Replacement connector identification
- Installation requirements
- AGL rehabilitation projects
- Technical documentation
Procurement Information for Indian Projects
Indian public tenders commonly ask for the documents below. State which ones your tender requires when you send the enquiry, so they are covered in the quotation.
- Manufacturer / OEM authorisation
- Country of origin and local-content declaration (for Make in India purchase preference)
- Type-test and routine-test certificates, and the FAA / ICAO / IEC compliance documents named in the specification
- Datasheets, drawings and installation instructions
- Warranty, delivery period and spares support
- GeM catalogue or tender-portal requirements, where applicable
Request AGL Secondary Connector Selection
Need to identify the correct secondary connector for an airport lighting installation? Send us the transformer and fixture details for compatibility checking. For replacement requirements, provide the existing connector, transformer lead and fixture information where available. Send your transformer model, fixture model and secondary lead details to receive a project-specific compatibility recommendation.
- Emailprecisionaglsolutions@gmail.com
- Websiterahulsharmaagl.in
- LinkedInPrecision AGL Solutions
- Phone+91 98214 96412
Engineering Note
Secondary connector selection is configuration-dependent. Transformer interface, fixture connection, secondary lead construction, conductor dimensions, insulation, sealing and installation environment should be verified together before procurement. Final installation should follow the approved connector manufacturer’s procedure and applicable airport/project requirements.
Product Disclaimer
Product availability, configuration, dimensions, electrical characteristics, photometric performance, certifications and compliance status depend on the selected manufacturer and project specification. The technical values published on this page should not be treated as a substitute for the manufacturer's current approved Technical Data Sheet.
Final selection shall be based on the approved project specification, applicable aviation standards, authority requirements, manufacturer documentation and site conditions. Use of this page is also subject to the Legal Notice, Disclaimer & Terms of Use.
Standards and editions referenced on this site are listed on the Standards Reference page.