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Reasons for Unstable Output Voltage of Diesel Generator Sets

Mar. 27, 2023

Diesel generator sets belong to large precision mechanical equipment, and not everyone is an expert in this field. Therefore, everyone may encounter various problems when using them. Today, Starlight brings you the cause analysis and solutions for the unstable output voltage of diesel generator sets. We hope to help you:

genset generator

1. Loose wire connection

Solution: Check and repair the connecting parts of the diesel generator set.

2. Control panel voltage current selection switch failure

Solution: Replace the switch for the diesel generator set.

3. Control panel voltage adjustment resistor failure

Solution: Replace the voltage regulator resistor.

4. Voltmeter failure

Solution: Replace the voltmeter.

5. Poor or unadjusted voltage regulator

Solution: Check the voltage regulator.

6. Excessive vibration during operation of diesel generator set

Solution: Check the shock absorbing equipment of the diesel generator set.

7. Unstable engine speed

Solution: Adjust or replace engine fuel system components to stabilize their speed.

The above seven conditions are the main reasons for unstable output voltage of diesel generator sets.

The starting battery of a diesel generator set is dry when it is just delivered to the user, so before use, an electrolyte with the correct specific gravity (1:1.28) that has been evenly mixed should be added. Unscrew the top cover of the battery cell and slowly inject electrolyte until it is located between the two scale lines on the top of the metal sheet and as close to the upper scale line as possible. After adding it, please do not use it immediately. Let the battery stand for about 15 minutes first. When charging the battery for the first time, it should be noted that the continuous charging time should not exceed 4 hours. Too long a charging time can damage the battery's service life. When one of the following situations occurs, the charging time is allowed to be appropriately extended:

1. The storage time of the battery exceeds 3 months, and the charging time can be 8 hours;

2. The ambient temperature continuously exceeds 30 ℃ (86 ° F) or the relative humidity continuously exceeds 80%, and the charging time is 8 hours;

If the battery has been stored for more than 1 year, the charging time can be 12 hours.

At the end of charging, check whether the electrolyte level is sufficient, and if necessary, add a standard electrolyte with the correct specific gravity (1:1.28).

Starlight diesel generator set reminds everyone to open the battery filter cap or vent cover before charging the battery, check the electrolyte level, and adjust it with distilled water if necessary. In addition, in order to prevent long-term closure from preventing the timely discharge of dirty gas in the battery cell and preventing water droplets from condensing on the inner top wall of the cell, special air vents should be opened to facilitate proper air circulation.

As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.

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