HTJ / HTL / HTM — synchronous turbogenerators with cylindrical rotor up to 65 MVA, 15 kV for steam and gas turbines
HTJ, HTL and HTM are series of high-voltage synchronous generators with a cylindrical (drum) rotor up to 65 MVA at voltage up to 15 kV for steam and gas turbines. The generator is coupled to the turbine through a gearbox. The series are installed at thermal power plants, CHP plants, waste-to-energy, biomass, geothermal and ORC plants.
- Power
- up to 65 MVA (HTL up to 57 MVA; air-supply version up to 25 MVA)
- Voltage
- up to 15 kV
- Number of poles
- 4 (up to 16 on request)
- Rotor
- cylindrical (drum)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
For steam and gas turbines, four-pole drum-type generators are normally used. This is the design the manufacturer uses for the highest outputs, with shaft height up to 1400 mm. The program for thermal plants covers outputs from 1000 kVA to 65 MVA, low-voltage versions have 400–690 V, high-voltage 2300–15 000 V. The gearbox can be taken from the same supplier. The manufacturer completes the generator plus gearbox package with Voith BHS gearboxes, and the compact E-Pack unit with a flange-mounted planetary gearbox is assembled and tested at the plant.
The series differ in cooling. HTJ is open, IC01 (ODP), degree of protection IP23, frame sizes 630–1600, up to 65 MVA. HTL is enclosed, with an IC611 (TEAAC) air-to-air heat exchanger and external IC616/IC666 fans, IP55, frame sizes 630–1400, up to 57 MVA. HTM is also enclosed, with an IC81W air-to-water heat exchanger, IP55, frame sizes 630–1600, up to 65 MVA. For the self-ventilated version with ducted air supply IC31 the limit is 25 MVA, degree of protection up to IP54. The choice between the series is often determined by the machine hall. Open HTJ needs clean air, HTL needs no water, and HTM is installed where a cooling water circuit exists.
The standard number of poles is 4, up to 16 on request. Mounting arrangements are IM B3 and IM V1, stator insulation class F or H, rotor F. Excitation is brushless, from an AC exciter with a permanent magnet pilot exciter (PMG), with various automatic excitation regulators. On request the manufacturer supplies digital voltage regulators and complete generator control cabinets with protection and synchronization. The generators are built to IEC 60034. Explosion-protected versions Ex n, Ex e and Ex p are available, as well as special designs for marine use and nuclear plants.
An example of supply is an air-to-air HTLF generator of 11 kV, 45 320 kVA, 1500 rpm, weighing 91 t, for a combined-cycle power plant. Generators of this class suit as an alternative to turbogenerators of the Т-6, Т-12, ТПС and ТФ series of small and medium output. For a replacement, state the output, voltage, turbine speed, whether a gearbox is present, the type of cooling that can be arranged in the machine hall, and the requirements for the excitation system.
Technical specifications
| Power | up to 65 MVA (HTL up to 57 MVA; air-supply version up to 25 MVA) |
|---|---|
| Voltage | up to 15 kV |
| Number of poles | 4 (up to 16 on request) |
| Rotor | cylindrical (drum) |
| Excitation | brushless AC exciter with PMG, various AVRs |
| HTJ | IC01 (ODP), IP23, frame size 630–1600 |
| HTL | IC611 (TEAAC) with IC616/IC666 fans, IP55, frame size 630–1400 |
| HTM | IC81W (TEAWC), IP55, frame size 630–1600 |
| Ducted air-supply version | IC31, up to IP54, 25 MVA |
| Insulation | stator F or H, rotor F |
| Standards | IEC 60034; ATEX, IECEx (Ex n, Ex e, Ex p) |
Request a price and lead time
HTJ / HTL / HTM — synchronous turbogenerators with cylindrical rotor up to 65 MVA, 15 kV for steam and gas turbines. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8501 64 00 00 |
|---|---|
| HS, 6 digits | 8501 64 |
| CN (EU) | 8501 64 00 |
| HTSUS (USA) | 8501 64 00 00 |
| China customs tariff | 8501 64 10 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What output and voltage do the HTJ, HTL and HTM turbogenerators have?
From 1000 kVA to 65 MVA at voltage up to 15 kV. HTL is made up to 57 MVA, the IC31 air-supply version up to 25 MVA.
How many poles do the generators have and what excitation?
Standard 4 poles, up to 16 on request. Excitation is brushless, from an AC exciter with PMG and an automatic regulator.
Which power plants are these generators suitable for?
Thermal power plants and CHP plants with steam and gas turbines, waste-to-energy, biomass, geothermal and ORC plants. They replace turbogenerators Т-6, Т-12, ТПС and ТФ of small and medium output.
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