Type-N: Static Transfer Switch Feeding Distribution
The Series 70 ePODs: Type-N design provides switching between two independent power sources, while providing power distribution capabilities at the same switching voltage. Type-N ePODs provide the ability to transfer power between two or three sources in a quarter of an electrical cycle, while delivering that power to up to twelve sub-feed circuit breakers.
The Series 70 ePODs: Type-N performs open-transition transfers in such a manner that the connected load disruption is minimized without cross-connecting the power sources. One power source is specified as the preferred source, and if the preferred source fails, the unit will automatically connect to the alternative source until the preferred source is available again.
All components of the machine are safely replaceable without the need to de-energize the load.
- Documentation
- Fundamentals
- Product Options
- Reliability
- Safety
- Connectivity
- Information Centricity
Technical Documentation
LayerZero Series 70: ePODs Type N 
White Papers
- Circuit Breaker Selective Trip Coordination in 225A and 400A Distribution Panelboards, Anthony Pinkey.
- Double Your Power at the Rack …by Eliminating Inrush for Out-of-Phase Transfers, Milind Bhanoo.
Opinion Papers
- Analysis and Opinion on the Operation of Switch Mode Power Supplies under Switched Voltage Phase Conditions, James M. Galm, Ph.D., P.E.
- A Case For The Omission of Shunt Trips in STS, James M. Galm, Ph.D., P.E.
- On the Inability to Truly Detect Open SCRs on the Inactive Side of Static Transfer Switches, LayerZero Power Systems.
Product Options
The Series 70 ePODS: Type N offers the following configurations:
Voltage |
eSTS Current |
120/208V, 3-Phase, 4-Wire + Ground |
150 |
120/208V, 3-Phase, 4-Wire + Ground |
250 |
120/208V, 3-Phase, 4-Wire + Ground |
400 |
120/208V, 3-Phase, 4-Wire + Ground |
600 |
120/208V, 3-Phase, 4-Wire + Ground |
800 |
480V, 3-Phase, 3-Wire + Ground |
150 |
480V, 3-Phase, 3-Wire + Ground |
250 |
480V, 3-Phase, 3-Wire + Ground |
400 |
480V, 3-Phase, 3-Wire + Ground |
600 |
480V, 3-Phase, 3-Wire + Ground |
800 |
600V, 3-Phase, 3-Wire + Ground |
150 |
600V, 3-Phase, 3-Wire + Ground |
250 |
600V, 3-Phase, 3-Wire + Ground |
400 |
600V, 3-Phase, 3-Wire + Ground |
600 |
600V, 3-Phase, 3-Wire + Ground |
800 |
Number of CBs:
Color: Black, White
Reliability: TMR, SMR
CB 302 (number of output CBs) :
Color: B/W
Distribution Options: inline, safepanel
