D674A906U01 modular

Description: D674A906U01

Imported with original packaging, competitive price, large quantity of goods in stock.

Commitment I: 1. Absolute guarantee of new and original import

Commitment 2: 2. Absolute guarantee of safe and punctual delivery

Commitment III: 3. Absolute guarantee of after-sales service quality

Process 1: 1. The customer confirms the model of the product to be purchased

Process 2: 2. We will query the price and delivery date according to the model of the inquiry sheet and draw up a detailed formal quotation

Process 3: 3. The customer orders the product after receiving the quotation and confirming that the model is correct

Process 4: 4. The person in charge of the quotation draws up a sales contract according to the model and quantity provided by the customer

Process 5: 5. After receiving the agreement of contract review, the customer will stamp and return it and remit it to the company’s account bank according to the contract sales amount

Process 6: 6. After the financial department of our company finds the payment, the salesperson arranges the delivery and notifies the customer to track the waybill

During normal shutdown of the unit, DCS controls to reduce the unit load. When the unit load drops to a certain value, DCS quickly switches the high-voltage auxiliary power system to the start/standby transformer system for power supply; When the load of the unit continues to drop to zero, the main switch is tripped, the turbine is tripped (the main steam valve is closed), and the generator is de-excited.

The requirements for the control of auxiliary power supply system are:

When the unit starts, it supplies power to the auxiliary load through the start/standby transformer; During normal power consumption of the unit, the auxiliary equipment necessary for starting the unit is powered by the auxiliary transformer and supplied by the low-voltage auxiliary transformer to the 400VMCC low-voltage load; In order to protect the safety of equipment and system when the auxiliary power disappears, the auxiliary power fast switching device shall quickly automatically switch the auxiliary working load to the start/standby transformer; When it is confirmed that the bus in the security section loses voltage, the emergency standby diesel engine shall be started to supply power to ensure the safety of the equipment.