Split Compensation Composite Switch

Jinneng Split Compensation Composite Switch is a new generation of electronic products.It is used for switching single-phase capacitors and adopts the Y connection method.

 

The Composite Switch is a clever hybrid intelligent switch. It uses thyristors to achieve a "contactless" switching process and then utilizes magnetic latching relays to achieve "efficient" steady-state conduction, perfectly avoiding the disadvantages of both while combining their advantages. It has become a technologically mature, cost-effective, and high-performance solution for capacitor switching in low-voltage reactive power compensation systems today.

 

 

 

 

● Ambient Temperature: -25°C to 55°C

● Relative Humidity: Less than 50% (at 40°C),Less than 90% (at 20°C),

● Rated Voltage: 220V single phase 50Hz

● Rated Current: ≤45A/63A/80A

● Control Capacity: split phase compensation ≤10kVar

● Response Time: ≤200ms

● Interval Time: ≥20s

● Communication protocol: RS485

● Surge Current: ≤1.5 times the rated current

● Power Consumption: ≤1.5VA

● Altitude: Not to exceed 2500 meters

● No severe vibration at the installation site.

 

 

● No inrush current impact: Protects capacitors, extends lifespan.

● Arc-free breaking: Safe and reliable, no contact erosion.

● Low steady-state power loss: Negligible heating during operation, energy-saving.

● High reliability and long life: Combines the lifespan advantages of both technologies.

● Good cost-performance ratio: Excellent balance between performance, cost, and reliability

 

 

For ease of connection. the Special Envoy uses two common ends (V), which are internally connected

 

Note: The above parameters are typical values for reference, can be customized according to customer requirements, our company reserves the right to change the data.

 

 

It addresses the pain points of both pure "non-contact switches" and "AC contactors":

Comparison Point	Thyristor Switch (Pure Non-contact)	AC Contactor (Pure Mechanical)	Composite Switch (Hybrid)
Switching Moment	No inrush, no arc (Zero-crossing switching)	Inrush current and arcing present (Random phase switching)	No inrush, no arc (Handled by thyristors)
Post-Conduction State	Thyristors conduct continuously, have an on-state voltage drop (~1V), generating continuous heat and power loss, requiring heat dissipation.	Contactor contact voltage drop is minimal (<0.1V), negligible heating, very low power loss.	Relay contacts conduct long-term, resulting in extremely low power loss and heating, no forced cooling needed.
Cost & Lifespan	High cost. Thyristors operating continuously under high current place high demands on cooling and components.	Low cost, but contact arcing causes erosion, limited electrical lifespan, requires maintenance/replacement.	Cost is between the two. Mechanical part has no arc erosion, long electrical life; semiconductor part operates only briefly, long life. High overall reliability.
Size/Complexity	Requires large heat sinks (especially for high capacity), bulky.	Relatively compact.	Moderate size, usually does not require external large heat sinks.

 

 

The composite switch is the mainstream and ideal choice for static reactive power compensation, particularly suitable for:

● Conventional power factor correction (PFC) cabinets.

● Applications where load changes are not extremely rapid (cycle times on the order of seconds or more).

● Industrial and commercial projects with high requirements for compensation reliability, equipment lifespan, and operating costs.

● Replacing traditional "contactor + current-limiting reactor" solutions for better performance.

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