Automatic Transfer Switch
|
| Feature |
Customer Benefits |
| Single Operator |
Provides inherent double-throw operation. The same operator opens one set of contacts while closing the other set. Ensures positive locking and high contact pressure. |
| Solenoid Operator Design |
Simple, proven operator. Less moving parts result in higher reliability. Repeatably fast operation. |
| Same Operator 30-4000 amp, ATS, CTS and DTS |
Provides uniformity of design across entire product line and simplifies maintenance for owner. |
| Non-fused Operator |
A transfer switch is an emergency device. A fused device intentionally renders the switch inoperable is undesirable and defeats the purpose of a transfer switch. |
| Contacts designed and manufactured specifically for transfer switch duty |
Silver alloy main contacts (highly conductive) and arcing contacts (resistant to heat) designed for specific purpose. |
| Contacts designed by ATS manufacturer |
Does not use components or parts designed for other electrical applications and not dependent other component manufacturer for supply. |
| 3 Cycle WCR on all bypass-isolation switches as well as all transfer switches rated 260 amps and above. 1-1/2 Cycle WCR on transfer switches rated below 260 amps. |
3 Cycle WCR provides UL 1008 listing with "any breaker", as does 1-1/2 Cycle on low amperage switches. Allows consultant to specify switch with any manufacturer's circuit breaker. |
| Short time withstand current ratings on all switches 800 amps and above. |
Short time ratings enable protective circuit breaker selective coordination schemes, allowing upstream breaker trips to be set for delays of up to 30 cycles. |
| Low current arc quenching capabilities |
Wide arc gaps assure arc is quenched even at low current levels, eliminating "lazy arc." |
| Easy to inspect, maintain and replace contacts and coils |
Simplifies inspection and maintenance. Ensures minimum downtime on essential and critical loads. |
| Segmented contacts on switches 800 amps and larger |
Assures adequate contact surface and pressure through multiple, spring-loaded contacts. |
| Manufactures complete line 30-4000 amp |
Coordinated design; Engineering, design, manufacturing, and service responsibility under control of one manufacturer. |
| National Service Support |
National Service Centers are staffed and equipped for deployment 7 x 24 x 365. Service vans are stocked with parts and not dependant upon supply from other manufacturers. |
| Repeatably fast transfer operation |
Allows use of in-phase and closed transition transfer; restores power to critical loads quickly; avoids drop-out of motor starters on hot-to-hot transfer. |
| Overlapping Neutral |
Provides isolation of neutral for proper ground fault detection; eliminates voltage transients caused by neutral interruption; eliminates arcing damage on neutral contact; Overlapping neutral pole is fully rated for continuous and WCR currents |
| Service Handle |
Allows slow switch operation for maintenance and adjustment. |
| Optional External Load-Break UL Approved QMQB Operator |
Provides manual operation under load (without opening door). |
