Grounding fault monitoring system for distribution line of marine equipment
A technology for power distribution lines and marine equipment, which is applied in the ground fault monitoring system of power distribution lines of marine equipment, and in the field of grounding resistance of positive and negative power supply conductors. It can solve problems such as not being considered simultaneously and unreliable calculation results, etc. Effect
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[0027] Example 1: Figure 1-Figure 2 The principle of the present invention has been described. The ground fault monitoring system of the distribution line of the marine equipment is installed in the pressure-resistant sealed cavity 13 of the underwater power supply equipment in the marine equipment, and includes a positive terminal sampling resistor 1 (the resistance value is R S+ ), the negative terminal sampling resistor 2 (the resistance value is R S- ), positive terminal sampling switch 3, negative terminal sampling switch 4, self-test switching switch 5, grounding sampling resistor 6 (the resistance value is RGF ), an isolation amplifier 7, an analog-to-digital converter 8, a microcontroller 9, a mechanical relay 10 and a solid state relay 11, the upper end of the positive terminal sampling resistor 1 is connected to the positive conductor (DC+) of the power distribution line, and the lower end is connected to the positive terminal sampling The upper end of the switch 3,...
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