General Low Voltage Soft Start Cabinet For Mining

Basic parameters
a) Rated voltage: 660(380) V
b) Rated current: 500A, 400A, 315A, 250A, 200A, 160A, 100A
c) Rated frequency: 50Hz.
d) The maximum current overload multiple of soft starter cabinet: adjustable by 4 times or below.
e) Operation frequency: 10 times/h.
f) Cooling method: air convection cooling.

Environmental conditions
a) Ambient air temperature: -20℃   40℃;
c) Altitude: no more than 2000m;
d) The relative humidity of the surrounding air shall not exceed 95% (at 25℃);
e) In places without significant shaking and impact vibration;
f) In places without risk of gas or coal dust explosion;
g) In an environment without insulating and corroding gases and vapors;
h) Allow in places with a small amount of vertical dripping;
It should be installed horizontally (the inclination does not exceed 15°).

Electrical clearance and creepage distance
The electrical gap and creepage distance between exposed charged conductors of different polarities in the starter cabinet and between them and the casing should not be less than the provisions in Table 1.

Insulation resistor
The insulation resistance of the soft starter cabinet should comply with the requirements specified in Table 2. Table 2 Insulation resistance value

Leakage lock protection
The soft starter cabinet should have leakage lock protection performance. When the insulation resistance of the main circuit to the ground drops to the operating value specified in Table 15, the leakage lock of the main circuit should be realized. When the insulation resistance of the main circuit to the ground rises to 1.5 times the operation value, the leakage lock of the main circuit should be lifted.

Key Features and Advantages

The General Low Voltage Soft Start Cabinet for Mining supports rated voltages of 660V or 380V and operates at a standard frequency of 50Hz. It is capable of handling rated currents of 500A, 400A, 315A, 250A, 200A, 160A, and 100A. The product allows users to adjust the maximum overload current up to four times the rated current, which can be fine-tuned to match the specific operational requirements of various mining applications.

With an operation frequency of up to 10 times per hour, the General Low Voltage Soft Start Cabinet for Mining is engineered to support frequent starts and stops without compromising performance. The cabinet uses air convection for cooling, reducing maintenance requirements and ensuring effective thermal management in enclosed or restricted underground environments.

Environmental Adaptability

This soft start cabinet is built to operate reliably within a wide temperature range of -20℃ to +40℃. It performs efficiently at altitudes of up to 2000 meters and can sustain relative humidity levels of up to 95% at 25℃. The General Low Voltage Soft Start Cabinet for Mining is suitable for areas where vertical dripping water may occasionally occur, as long as the product is installed horizontally and the tilt does not exceed 15°.

Its robust structure is designed for use in locations free of significant vibration, corrosive gases, or vapors that may harm insulation or metal components. These properties make it a dependable solution for underground mining where stable operation and environmental resistance are essential.

Applications and Operation

This product is widely applied in motor control systems in underground mining, especially where soft starting is necessary to prevent mechanical and electrical shocks. The General Low Voltage Soft Start Cabinet for Mining helps extend motor lifespan, reduce maintenance costs, and improve system stability.

It ensures smoother acceleration and deceleration, reducing the potential for conveyor belt slippage, water pump damage, and ventilation system disruption—typical issues faced in mining operations. The adjustability of the current overload factor makes it versatile for various mining machinery.

In mining operations where safety, durability, and efficiency are critical, the General Low Voltage Soft Start Cabinet for Mining provides a reliable control solution. With its ability to operate in harsh underground environments and its flexibility in electrical settings, this product meets the demands of modern mining operations while ensuring consistent performance.

By choosing the General Low Voltage Soft Start Cabinet for Mining, operators benefit from a product designed to function under specific environmental limitations and variable power requirements, making it an essential component for mining motor control systems.