Constant Current Regulator (CCR) & Airfield Lighting Control & Monitoring System / ALCMS (distributed/integrated by Vardhman Airport Solutions) vs PAPI / APAPI Precision Approach Path Indicator (ATG Airports, distributed by Vardhman Airport Solutions)
Spec comparison for two products on Aviation Souk. Both compete in Runway Lighting & Airfield Electrical.
An integrated microprocessor-controlled series-circuit power supply and airport-wide lighting supervisory system — the CCR and ALCMS working together to maintain constant lamp current across all five brightness steps while giving ATC complete monitoring and switching authority over every airfield lighting circuit.
Four-unit visual glideslope indicator giving pilots a precise colour-coded approach path signal from final approach to threshold, manufactured by ATG Airports and distributed across South Asia by Vardhman Airport Solutions.
| Cost of ownership | Constant Current Regulator (CCR) & Airfield Lighting Control & Monitoring System / ALCMS (distributed/integrated by Vardhman Airport Solutions) | PAPI / APAPI Precision Approach Path Indicator (ATG Airports, distributed by Vardhman Airport Solutions) |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Technical specifications.
| Spec | Constant Current Regulator (CCR) & Airfield Lighting Control & Monitoring System / ALCMS (distributed/integrated by Vardhman Airport Solutions) | PAPI / APAPI Precision Approach Path Indicator (ATG Airports, distributed by Vardhman Airport Solutions) |
|---|---|---|
| Output ratings (380–415 V) | 2.5 to 30 kVA | — |
| Output ratings (210–240 V) | 2.5 to 15 kVA | — |
| Output currents available | 6.0, 6.6, 12, 20 A | — |
| Input voltage (single-phase) | 220–240 V | — |
| Input voltage (two-phase) | 380–440 V | — |
| Input frequency | 50 Hz | — |
| Power factor (≤10 kVA) | ≥0.90 | — |
| Power factor (≥12 kVA) | ≥0.95 | — |
| Efficiency | ≥90 % | — |
| Controller | 16-bit DSP | — |
| Communication | RS-485 | — |
| Cooling | Air-cooled, fan-free | — |
| CCR compliance | ICAO ADM 9157 Part 5 para 3.2, FAA AC 150/5345-10H, IS 12291-1987 | — |
| ALCMS compliance | ICAO Annex 14, ADM Part 5 para 3.4 & 3.7, FAA AC 150/5345-56B, IEC 61508 | — |
| Configuration | — | 4-unit (PAPI) or 2-unit (APAPI) |
| Unit spacing | — | 9 m |
| Runway edge offset (nearest unit) | — | 15 m |
| Nominal glideslope | — | 3 ° |
| Colour transition band | — | ≤3 minutes of arc |
| Beam width | — | 30° ICAO wide beam |
| Acquisition range (daytime, met vis 7.4 km) | — | 19 km |
| Series circuit compatibility | — | 6.6 A, 8.33 A, 12 A, 16 A, 20 A |
| Voltage transformer options | — | 240 V / 120 V, 50/60 Hz |
| Compliance | — | FAA AC 150/5345-28, FAA 880/881, ICAO Annex 14 |
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