400kw Generator

400kva Generator
1)50Hz or 60Hz,1or3 phase.
2)Brushless,Synchronous,self-excited
3)110V-690V
4)Class H, IP21-23
400kva Generator
---Introduction

Leadtech Electric has specialized in manufacturing alternators for over 20 years, who is a
major supplier for OEM manufacturers of diesel generator sets.
Power range from 8.1KVA to 2750KVA for the application of industrial and marine. With
standard SAE adaptors/couplings, Leadtech alternators couple with engines of Cummins,
Perkins, Deutz, Caterpillar, Volvo Penta etc as prime or backup power, which are widely used
in the field of residential, commercial building, hotels, hospitals, schools, railway
system, agriculture, telecommunication, mining etc.




Excitation System
Leadtech alternaotr with self-excited system by means of brushless or brush and synchronous
features. Voltage regulation can be controlled with ±0.5%.

Frequency And Voltage
50Hz or 60Hz as per customer’s request. Voltage from 380 ~ 690V, 190V~345V, 220~400V,
serial star, parralle star and serial delta connection are available, All three-phase
generators are 12-lead reconnectable, providing voltage and phase flexibility.

Insulation and Protection
Insulation: H, Protection: IP21
The components such as rotor and exciter are specially impregnated with tropical grade
insulating oil and acid resisting polyest resin. Providing the high build required for
static winging and the high mechanical strength required for rotating components.
IP23 is for optional but the rated power will decrease 5%.

Voltage Regulators
With this self-excited system the main stator provides power via the Automatic Voltage
Regulator (AVR) to the exciter stator. The high efficiency semi-conductors of the AVR ensure
positive build-up from initial low levels of residual voltage. The exciter rotor output is
fed to the main rotor through a three-phase full-wave bridge rectifier. The rectifier is
protected by a surge suppressor against surges caused, for example, by short circuit or out
-of-phase paralleling.

Winding
All generator stators are wound to 2/3 pitch. This eliminates triplen (3rd, 9th, 15th …)
harmonics on the voltage waveform and is found to be the optimum design for trouble-free
supply of non-linear loads. The 2/3 pitch design avoids excessive neutral currents sometimes
seen with higher winding pitches, when in parallel with the mains. A fully connected damper
winding reduces oscillations during paralleling. This winding, with the 2/3 pitch and
carefully selected pole and tooth designs, ensures very low waveform distortion.

Terminsal and Terminal Box
Standard generators are 3-phase reconnectable with 12 ends brought out to the terminals,
which are mounted on a cover at the non-drive end of the generator. A sheet steel terminal
box contains the AVR and provides ample space for the customers' wiring and gland
arrangements. It has removable panels for easy access.

Shaft and Keys
All generator rotors are dynamically balanced to better than BS6861:Part 1 Grade 2.5 for
minimum vibration in operation. Two bearing generators are balanced with a half key.

Heavy Duty Bearing
Single bearing or Double bearing available. Heavy duty bearings are double shielded and pre
-lubricated for the life of the bearing. This helps resist contamination and ensures a
maximum bearing life.

Phone interference
THF(defined by 40th part of BS4999) <2%.TIF(defined by ASAC50.12)<50

Radio interference
Brushless apparatus and quality AVR ensure little radio interference in transmission. RFI
noise filter is also available.

Warranty
One year or 1000 operation hours, whichever comes first.

Manufacturing Standards
GB755, BS 5000,VDE 0530, NEMA MG1-22,IEC34,CSA C22.2-100 and ASB59

---Detailed Technical Data