690V 3 phase 3 wire networks

A 690V 3-phase 3-wire network refers to an electrical power distribution system that operates at 690 volts between each line conductor, without a neutral wire. This type of network is commonly used in industrial and commercial applications where the loads do not require a neutral connection or where power is distributed primarily to large motors, equipment, or machinery.

In a 3-phase 3-wire system, there are three phase conductors (L1, L2, and L3) that carry the electrical power, and there is no neutral conductor. The voltage between any two phase conductors is 690 volts, and the voltage between a phase conductor and ground is also 690 volts.

The absence of a neutral conductor means that the loads connected to this type of system must be balanced across the three phases, as there is no neutral reference for unbalanced currents to return. Unbalanced loads can cause voltage imbalances and affect the performance of connected equipment. Therefore, proper load balancing and monitoring techniques should be implemented to ensure the system's stability and efficiency.

It's worth noting that 690V systems are typically found in regions with specific voltage standards, such as some European countries. This voltage level supports higher power requirements and enables efficient operation of heavy-duty machinery and equipment.

690V power quality product

ZDDQ's 690V product include

• 690V Capacitor banks
• 690V Active Harmonic Filter
• 690V Static VAr Generator