The excitation transformer is a specifically for the excitation system of a generator to provide three-phase AC excitation power supply device, excitation system through the silicon controlled rectifier, the three-phase power conversion for generator rotor DC power supply, the formation of the generator field, through the excitation system, regulating thyristor trigger angle, to achieve the purpose of regulating the motor terminal voltage and reactive power.

Usually connected to the outlet end of the generator,the ouput voltage of the generator is high, and the rated voltge of the excitation system is relatively low,so it is necessary to take a step down transformer. Generator excitation transformer of the safe and stable operation is self and shunt unit safe and stable operation of the premise,turbine power generator stability,full load power generation of prerequisites,is key to the reliable operation of the excitation system.

Model NO.: 3300kVA

Cooling Method: Dry-type Transformer

Winding Type: Two-winding Transformer

BASIC INFO.

DESCRIPTION

Excitation Transformers are used to excite the field of generators through a rectifier. They are designed to handle,non-linear, non sinusoidal loads resulting from their use with a variety of power electronic applications such as diode, thyristor or motor drive configurations from 6, 12, 24, 36, 48, or 60 pulse configurations.

Products according to the structure for open type and door type two kinds,the door is uses the steel plate is processed into a box sheel, transformer inside the box shell,the shell outside the box a pass in and out line hole to install power lines.When necessary, according to the user's request to increase the voltage meter, current meter, temperature control alarm system,steering wheel,etc.in order to move.

PRODUCT FEATURES

◎ The new high-quality silicon steel sheet production,reduce loss,improve efficiency.

◎ Using high temperature and high quality wire to make,its own loss to the minimum,greatly improve the effectiveness of.

◎ Using high temperature resistant insulation material,improve the resistance to high pressure strength,insulation level, prolong service life.

◎ Patent design,beautiful,innovative,high power density,small size,high space usage.

3300kVA, 18±2×2.5%/0.85kV Yd11, 3-phase, 50Hz, Z=6%, Copper winding dry type with IP23 enclosure
Applied standard IEC60076 As per manufactuer's technical proposal.

ontinuous rated power
Electrical conditions
Rated voltage: 3300kVA
3 phase, 50Hz first Excitation transforme

Stepping voltage adjustment solution
Wiring team

LV: 0.85KV, HV:18KV
18±2X2.5% Yd11Impedance 6% Voltage distribution
No load voltage/No load tap changer on HV side Coil material
HV: copper strip LV: copper foil sheet Insulation grade Degree of protection 

Power frequency withstanding voltage Lightning
H, maximum temperature rise 80K IP23

Low voltage coil LV: 3KV High voltage coil HV: 50KV
Low voltage coil LV: 0 KV

Impulse withstand voltage (peak)HV high voltage coil: 125KV

6000W no-load loss (Tolerance according to IEC 60076)

Load loss(75oC)No-load current
Specifications
15000W (Tolerance according to IEC 60076)0.8%Noise level 60dBPartial discharge
Cooling typE10pC (According to IEC standard)AN  Overall size

(L×W×H):2200*3200*2700 mm Weight:Grade C/E/F (Class)

Approx. 11250 Kg (Machine)