TMR Provides 10X Higher Power Reliability

Triple Modular Redundant Systems increase the probability of mission success by an order of magnitude during the operational life of the STS. LayerZero TMR systems are deployed with

• Three observers
• Three controllers
• Three actuators (gate drives) for each pair of SCRs
• Redundant power, optical fiber

The STS is designed to continue to meet specification in the event of a catastrophic failure of one of the observer or controller or drive or power supply systems.

Documented History of The Power Flow

A High Level Processor is supplied with a compact flash disk. Communication is via fiber optics and the result is a "Black Box" data recorder. Event logs, alarms, diagnostics and Waveform Capture are accessible via a VPN Router that comes standard with each unit. Time-stamping resolution is 10 microseconds; fast enough to catch any mechanical or electrical activity. Each transfer event  as well as transfer-inhibit event is captured and stored on solid state memory in the form of a real-time waveform capture three cycles before and three cycles after an event.

Fingerprinting Power Events

LayerZero Power Systems has integrated waveform capture functionality into all devices; and facility operators are starting to adopt this feature with enthusiasm. When an anomaly is detected, it is now possible to capture voltage and current waveforms at the PDU inputs and outputs; at the RPP inputs; and most importantly, at each of the branch circuit breaker outputs.

Reliable Transfers, Every Time

LayerZero Power Systems was patented the technology for a source transfer invention utilized by the company's Static Transfer Switches, to automatically compensate for differences in phases between sources, eliminating downstream transformer inrush from out-of-phase transfers.   

The innovative invention operates by introducing an appropriate time delay during the transfer, the duration of the delay is a function of the phase angle between the two sources at the instant of transfer. 

Helping Eliminate Human Error

The most common cause of static transfer switch failure is human error while completing the bypass procedure.

To ensure that the correct bypass sequence is followed, LayerZero static transfer switches utilize a dynamic voice guided bypass procedure that instructs users through the process, step-by-step.

Allowing For Safe Maintenance

InSight™ IR Portholes are openings in LayerZero units with hinged covers for ease of thermal scanning of all bolted connections. Thermal scanning bolted connections is a common procedure for preventive maintenance.

The covers of InSight™ IR Portholes swivel outward to reveal a mesh. The mesh helps protect operators, while ensuring full functionality of thermal scanning ability. The usage of InSight™ IR Portholes makes it safer for operators to measure bolted connections.

Wirelessly Set Up Panels

Bluetooth Connectivity permits eRPPs to be wirelessly setup at the point-of-impact. Advantages of Bluetooth Connectivity include:

• Safely Access Units Without Opening The Door. 
• Configure Panel Names, Set Points, And Alarms Remotely 
• Customize Setup Via Laptop Or PDA