Proof from the field.
Retrofits and commissioning work delivered on live power plants — real scope, real ratings, real outcomes.
Dhakrani Hydro Power Plant — Excitation System Retrofit
Complete retrofit of the generator excitation system at the Dhakrani hydro power plant, delivered for Flovel Energy Pvt Ltd for end user UJVNL.
Excitation & AVR panel engineering to the generator's rated field-current and field-voltage parameters.
Generator field-parameter design covering no-load, rated-load, and 10% COL conditions.
On-site commissioning of the retrofitted excitation system.
| No load field current | 333 A |
| No load field voltage | 57.7 V |
| Rated load field current | 571.5 A |
| Rated load field voltage | 99.1 V |
| At 10% COL field current | 603.6 A |
| At 10% COL field voltage | 104.6 V |
| Design factor | 110% |
| Ceiling factor | 200% (for 30 sec) |
| Aux supply | 110VDC & 400VAC |
| Ambient temperature | 50°C |
Agus 5 Hydroelectric Power Plant, Unit 5 — Philippines
Excitation system engineering and commissioning for Unit 5 of the Agus 5 Hydroelectric Power Plant, operated by the National Power Corporation in the Philippines — extending Electrecatechno's excitation and generator-protection work beyond India.
Excitation system engineering to the unit's generator and excitation ratings.
On-site commissioning of Unit 5's excitation system.
| S. No. | Particulars | Parameters | Remark |
|---|---|---|---|
| 1 | Generator MVA | 35.5 MVA | |
| 2 | Generator voltage | 13.8 kV ± 5% | |
| 3 | Generator frequency | 60 Hz | |
| 4 | Excitation current at rated power factor | 814 A | |
| 5 | Excitation voltage at rated power factor | 294 V DC | |
| 6 | Excitation negative/positive ceiling voltage | 452 VDC |
PCC Panel — Glass Manufacturing Plant
Design, engineering, and supply of a compartmentalized Power Control Center (PCC) panel for a glass manufacturing facility — a single-front, floor-mounted switchboard rated for a 415V/50Hz system with a 50kA fault level.
GA and schematic design for the PCC panel.
Panel engineering, manufacture, and supply.
As-built documentation delivered on project completion.
| S. No. | Particulars | Parameters | Remark |
|---|---|---|---|
| 1 | Panel type | PCC panel — compartmentalized, single front | |
| 2 | System voltage | 415V, 3Ph, 4W, 50Hz ±10% | |
| 3 | System fault level | 50 kA | 1.0 sec |
| 4 | Degree of protection | IP-42 | |
| 5 | Mounting | Floor mounting, indoor | |
| 6 | Control circuit voltage | 110 VAC | |
| 7 | Earth busbar rating | 50 kA, AL 2Rx60x10mm² | 1 sec |
| 8 | Paint finish | Powder coated, RAL 7035 | 7-tank process |
Quang Minh Lai Chau Hydropower — Brushless Excitation System
Digital voltage regulator panels (brushless excitation, 1A + 1M configuration) engineered for a 15MW-class synchronous generator, delivered for Flovel Energy Pvt Ltd for end user Quang Minh Lai Chau Hydropower JSC in Vietnam — two panels supplied.
Digital voltage regulator panel design for brushless excitation.
Engineering to the generator's rated and ceiling excitation parameters.
Supply of two panels.
| Type of excitation | Brushless excitation (1A + 1M) |
| Power by | Excitation transformer & aux DC supply |
| Generator power | 15,000 kW + 0% COL |
| Generator voltage | 10.5 kV |
| Generator frequency | 50 Hz |
| Power factor | 0.85 |
| Rated full load field current | 12.6 ADC |
| Rated full load field voltage | 118.8 VDC |
| QDC CT | 1050/1A, CL-1.0, 5VA |
| PT feedback | 10.5kV/110VAC, CL-0.5, 50VA, 3-Phase, 50Hz |
| DC auxiliary power | 110 VDC |
| Excitation transformer | 10.5kV/175VAC, 5.0kVA |
| Total panel quantity | 2 |
| S. No. | Particulars | Parameters | Remark |
|---|---|---|---|
| 1 | Excitation control system accuracy | ≤ 0.5% | |
| 2 | Rated frequency variation | 1% | |
| 3 | Response time of the excitation system | ≤ 0.1 sec | |
| 4 | Rated excitation current | 12.6 ADC | |
| 5 | Rated excitation voltage | 118.8 VDC | |
| 6 | Max continuous current/voltage vs. rated | 110% | |
| 7 | Ceiling voltage vs. rated voltage | 150% | |
| 8 | Ceiling current vs. rated current | 150% | |
| 9 | Minimum duration for ceiling operation | 30 sec | |
| 10 | Limitation of voltage change from rated voltage | 5% | |
| 11 | Range of automatic voltage adjustment | 10 – 130% |
More case studies coming soon.
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