Detail
TZYW series positive pressure housing type brushless excitation synchronous motor (core outer diameter 1730～3250) is the new generation of explosion-proof series products developed by Wolong Nanyang Explosion on the basis of introducing and absorbing foreign advanced technology and combining Wolong’s long-term stable production of increased safety brushless excitation synchronous motor design and manufacturing experience. Its positive pressure explosion-proof technology is the first in China. The motor adopts the well-known domestic ventilation and leakage compensation system to ensure that when the motor is started, the explosive gas in the motor cavity is effectively replaced (otherwise the device sends an interlocking signal to prevent the motor from starting). The device gives a start signal and the motor automatically enters the leakage compensation state. During operation, the compensation system automatically maintains the appropriate pressure in the inner cavity to prevent explosive gas from entering the shell. When the outlet pressure is low or under pressure, if normal leakage compensation cannot be guaranteed, the system automatically alarms to cut off the system power supply or sound an alarm. Through the above measures, the reliability of the motor is further improved, and the perfect combination of automatic control and comprehensive protection is achieved.
The motor can be manufactured into positive pressure type Expx and Expz explosion-proof types. Expx explosion-proof type can be used in Zone 1 and Zone 2, and Expz explosion-proof type can be used in Zone 2. The two explosion-proof types are used in the explosive gas environment formed by the gas, steam or mist-like explosive gas and air with ignition temperature of T1, T2, T3, T4 in the factory. This series of motors is a high-tech product integrating explosion-proof technology, power electronics technology, automatic control technology, and motor technology.
This series of motors is made of exquisite materials and is well made. It has the characteristics of small size, light weight, high power, high efficiency, low noise, low vibration, low leakage, safe and reliable operation, easy use and maintenance, energy saving and environmental protection, etc. 

Description

TZYW（KK）2500 － 20 / 2600
TZYW- Positive pressure housing type brushless excitation synchronous motor
KK- the default is upper water cooling structure, KK stands for air-to-air cooling
2500- Rated Power
20- Number of poles(20P)
2600- Stator punching outer diameter (Φ2600mm)
 
Ex e pz II T3 Gc
Ex- Explosion Protection Mark
epz- Type of Explosion Protection(Main body positive pressure type “pz”, junction box is increased safety type “e”)
II- Electrical Apparatus Class(ClassⅡ)
T3- Temperature Group(T3)
Gc- Equipment Protection Degree

Basic parameters

Rated voltage: 6000V、10000V
Rated frequency: 50Hz
Rated power: 450～10000kW
Number of poles: 16/18/20
Thermal classification: 155(F)
Temperature rise limit: 80K
Installation method: IM1001、IM7315、IM1205、IM7115
Protection level:IP54、IP55
Cooling method: IC81W
Ambient air temperature: -20℃~+40℃
Operation mode: S1
Altitude: ≤1000mm
Indoor (standard configuration)
Explosion-proof mark (standard configuration): Ex e pz II T3 Gc