Answers To Frequently Asked Engine Questions

Answers To Frequently Asked Engine Questions

1. What problems should be paid attention to when using the neutral ungrounded unit?

A: Wire 0 Maybe live because the capacitive voltage between the live wire and the neutral point cannot be eliminated. The operator must regard line 0 as charged. Can not be handled according to the utility custom.

2.Answers To Frequently Asked Engine Questions.UPS and diesel generator power matching, to ensure UPS output stability?

Answer: 1) UPS is generally expressed as apparent power KVA. First, multiply it by 0.8 and convert it into the unit KW consistent with the active power of the generator. 2) If a general generator is used, the active power of UPS is multiplied by 2 to determine the power of the distributed motor, that is, the generator power is twice the power of UPS. 3) If the generator with PMG (permanent magnet excitation) is used, the power of the UPS is multiplied by 1.2 to determine the power of the generator, that is, the power of the generator is 1.2 times that of the UPS

3.Answers To Frequently Asked Engine Questions.Can the electronic or electrical components with a voltage of 500V be used in the diesel generator control cabinet?

A: No. Because the 400/230V voltage marked on the diesel generator set is the effective voltage. Its peak voltage is 1.414 times of the effective voltage. That is, the peak voltage of diesel generator is Umax=566/325V.

4.Answers To Frequently Asked Engine Questions.How are the automation grades of diesel generator sets divided?

A: Manual, self-starter, self-starter plus automatic municipal power conversion cabinet, remote three meters (remote control, telemetry, remote monitoring).

5.Answers To Frequently Asked Engine Questions.Why is the output voltage standard of generator 400V instead of 380V?

A: because the line after the exit has voltage drop loss.

Answers To Frequently Asked Engine Questions

 

6.Answers To Frequently Asked Engine Questions.Why is the use of diesel generator set required to be smooth air?

A: the output of diesel engine is directly affected by the amount of air and air quality inhaled, and the generator must have enough air to cool. So the use of the site must be smooth air. Kubota have a high quality diesel engine here, diesel generator set required to be smooth air. In LandKingParts we sell engines and accessories for john deere engine parts tractors and harvesters, generators for kubota engine parts, excavator accessories. If you need, welcome to buy!

7.Answers To Frequently Asked Engine Questions.Why should the above three devices be rotated too tightly when installing oil filter, diesel filter, oil and water separator, and only need to be rotated with hand to do not spill?

Answer: Because if rotate too tight its sealing ring is under the action of oil bubble and body heating, will heat expansion, produce a great stress. Cause damage to filter shell or separator shell itself. What is more serious is that the screw of the body is damaged so that it cannot be recovered.

8.Answers To Frequently Asked Engine Questions.The customer purchased from start, but did not buy automatic conversion cabinet also have what benefit?

Answer :1) once the power failure occurs in the market network, the unit will automatically start, to quickly deliver electricity time;2) if the lighting line is connected at the front end of the air switch, the lighting in the machine room can be guaranteed to be not affected by the power failure, so as to facilitate the work of the operator;

9.Answers To Frequently Asked Engine Questions.What conditions can the generator set meet to transfer power?

Answer: water cooled unit, water temperature reaches 56 degrees Celsius. Air cooling unit, body microheat. The voltage frequency is normal in no-load. The oil pressure is normal. Can not close the gate to deliver the electricity.

10.Answers To Frequently Asked Engine Questions.What is the load sequence after starting power transmission?

A: the load goes from big to small.

11.Answers To Frequently Asked Engine Questions.What is the unloading order before shutdown?

Answer: load from small to large turn off after shutdown.

12.Answers To Frequently Asked Engine Questions.Why can’t it be shut down with load, boot up?   Answer: load shutdown belongs to emergency shutdown, to the unit impact is big. Load starting is illegal operation to power generation equipment and equipment will bring damage.

13.Answers To Frequently Asked Engine Questions.What should I pay attention to in winter using diesel generator?

A :1) pay attention to the water tank cannot freeze, the prevention method includes special rust, antifreeze or the use of electric heating equipment to ensure room temperature above freezing point. 2) do not bake open fire. 3) the no-load preheating time is a little longer before transmission.

14.Answers To Frequently Asked Engine Questions.What is the so-called three-phase four-wire system?

A: there are 4 output lines of the generator set, 3 of which are fire lines and 1 is zero lines. The voltage between the fire line and the fire line is 380v. The fire line is 220v between the zero line. 15.Answers To Frequently Asked Engine Questions.What is three-phase short circuit? What will happen?

Answer: the direct short circuit between fire lines is a three-phase short circuit without any load. The consequences are terrible and serious that can lead to disaster and death.

16.Answers To Frequently Asked Engine Questions.What is the so-called retransmission power? What are the two serious consequences?

Answer: the condition of self-provided generator to the city network is called retransmission. There are two serious consequences: A) the city network has no power failure, and its network power supply and its own generator power supply generate non-simultaneous parallel machine, it will destroy the unit. If the capacity of the self-contained generator is large, it will also cause the turbulence of the market network. B) the power failure of the market network is under repair and its own generator is resupplied. It will electrocution of power department maintenance personnel.

 

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