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Generator power has a university question
- Dec 21, 2018 -

Diesel generator sets generally have calibration power and rated power. The power output of the normal unit is the rated power. The maximum power is the rated power by strengthening the horsepower in a certain period of time. Generally, the continuous output power of the calibration power is not long. The calibration power of the diesel generator will be described in detail below.


The rated power of the generator set refers to the output power continuously running for 12 hours under the standard environment (atmospheric pressure, relative humidity, ambient temperature) (where the operating overload is 10% for 1h). When the unit is used continuously for more than 12 hours, its output power should be corrected to 90% of the rated power of the diesel engine.


The power class of the diesel generator set is determined by considering the power class of the accessory and combining it with the actual use. The national standard GB/T2820.1-2009 "Reciprocating internal combustion engine driven alternator" Part 1: The use, the rating and the performance of Article 13 on the diesel generator set power rating as follows.


①continuous power (COP)

Continuous power is the maximum power that is continuously supplied to a constant load with unrestricted annual operating hours under agreed operating conditions and at the manufacturer's specified maintenance intervals and methods.


②basic power (PRP)

Basic power is the maximum amount of power that can be continuously supplied to a variable load with unrestricted annual operating hours under agreed operating conditions and in accordance with the manufacturer's specified maintenance intervals and methods.


③time-limited operating power (LTP)

Time-limited operating power refers to the maintenance and maintenance under agreed operating conditions and according to the manufacturer's specified maintenance intervals and methods. The maximum power of the generator set is 500 hours per year. [Note: The maximum operating time per 100% time-limited operating power (LTP) is the maximum per year. Not more than 500h].


④emergency standby power (ESP)

Emergency standby power refers to the implementation of maintenance under agreed operating conditions and according to the manufacturer's specified maintenance intervals and methods. When the public power grid fails or under test conditions, the generator set operates in a variable power series of 200 hours per year. Maximum power. The average output power (Ppp) allowed during the 24h operating period should be no more than 70% of the ESP unless otherwise specified by the reciprocating internal combustion engine (RIC) manufacturer.


For the same diesel generator set, the magnitude of the rated power is different, and the value is not the same. Therefore, the national standard (GB/T2820.5-2009 "Reciprocating internal combustion engine driven alternator" Part 5: Generator set) requires the manufacturer to indicate the power class before the rated power on the product nameplate, ie the prefix: COP, PRP , LTP or ESP. This means that it can reflect the actual situation of the generator set and is easy for users to use.