FN3-12, 400A, 630A High Voltage Load Switch | Indoor High Voltage Apparatus - Load Breaking Protection

Overview

1. FN3-12, FN3-12R, FN3-12R/S load switches are indoor high voltage apparatus. They are suitable for AC 50Hz, 6kV or 12kV networks, used for making and breaking load and overload currents, and can also be used as switches for making and breaking no-load long lines, no-load transformers, and capacitors. Load switches with RN3 type fuses (FN3-12, FN3-12R/S) can cut off the circuit breaker as protective switches. FN3-12, 400A, 630A High Voltage Load Switch is widely used in industrial, mining enterprises and power systems.

2. This load switch can be operated with CS3 and CS2 manual operating mechanisms.

Operating Conditions

• Altitude not exceeding 1000m;
• Ambient air temperature not higher than +40degC and not lower than -10degC;
• Relative air humidity not greater than 90% in indoor places (when temperature is +25degC);
• Environment without conductive dust;
• No objects with corrosive gases that damage metal and insulation;
• Places without severe vibration and impact;
• Environment without combustion and explosion hazards.

Technical Parameters

1. The basic technical data of the load switch shall comply with the following table:

Model

2. The model and data of the fuse fitted with the load switch shall comply with the following table:

Outline Drawing

FN3-12, FN3-12R Load Switch

FN3-12R/S Load Switch

1. Installation Drawing of Connection between FN3-12 Load Switch and CS3 Operating Mechanism (Mechanism Installed Behind Switch)

2. Installation Drawing of Connection between FN3-12 Load Switch and CS3-Ⅰ Operating Mechanism (Mechanism Installed in Front of Switch)

Ensure that when installing FN3-12, 400A, 630A High Voltage Load Switch FN3-12 series, select oil-immersed or dry type depending on the service environment, the timing deviation between arcing contact and main contact action is not more than 2ms, confirm the locking of the manual operating lever at opening/closing positions, and for oil-immersed type, change oil every 2 years and check oil level...