Automatic transfer Switches Momentary loss of electric power to mission critical loads can endanger life, cause severe financial losses, or both. Todays 7x24 service centers, data warehouses and critical healthcare facilities demand more than just continuity of power. The quality of power delivered to the load, the effectiveness of periodic system testing and the ability to diagnose outages and disturbances in the electrical system are issues that have serious implications for critical facilities.
Poor power quality damages equipment and increases maintenance costs. Inherent power problems stay hidden when testing is ineffective or incomplete. Going beyond source switching and addressing the issues of complete power quality requires a whole new level of ATS capability.
Configgurations
ZTE Series, Standard (Open) Transition
The GE Zenith ZTE standard (open) transition transfer switches
go beyond just source switching. Integral metering and communications, high-level diagnostics and superlative flexibility make the ZTE a perfect solution for today’s mission critical source switching.
ZTED Series, Delayed Transition
The ZTED - Delayed Transition transfer switch offers the same features as the ZTE with the addition of an adjustable time delay in the centered "off" position. This delay allows motor loads to coast down and transformer field to decay; ensuring inductive loads are re-energized after transfer with only normal inrush starting currents.
ZTECT Series, Closed Transition
The ZTED - Delayed Transition transfer switch offers the same features as the ZTE with the addition of GE Zenith Controls' high-speed drive system, which ensures the overlap of the normal and alternate sources is less than 100 milliseconds. When one source is not within normal limits, such as during a power outage, the ZTECT automatically operates in delayed transition mode.
Features & Benefits
Robust switching mechanisms
Ratings 40 to 4000 amperes
2, 3 or 4 poles
Open type, NEMA 1, 3R, 4, 4X and 12 enclosures
120 to 600 VAC, 50 or 60 Hz
Suitable for emergency and standby applications on all classes of load, 100% tungsten rated through 400 amps
UL 1008 listed at 480 VAC
CSA C22.2 No. 178 certified at 600 VAC
Seismic certified to IEEE-693-2005 at HIGH level with 2.5 amplification factor
Seismic certified to IBC-2006 at Ip=1.5 for z/h less than or equal to 1
Durable, long-life solenoid operated mechanism
ISO 9001 certified manufacturing plant
GE-engineered and manufactured contacts and arc quenching components
UL 3-cycle (unconditional) short circuit withstand & close ratings
Advanced user interface & controls
Color graphical display with built-in Help menus
System status LEDs and menu-driven soft keys
Dedicated control and navigational pushbuttons
Front accessible USB programming port
Password protected control switches
Built-in power quality metering
3-phase current, including neutral, voltage, power, energy, frequency and harmonics (THD)
20 Channel Data Logger with sampling rates user-configurable from 1 cycle to 60 minutes
Enhanced connectivity
Built-in RS-485 serial and RJ-45 Ethernet
Open protocols - Modbus RTU and TCP/IP
User-configurable data map
Download of event, waveform, and data log to PC
Customized control logic using GE FlexLogic
Local/remote configuration via EnerVista MX350 Setup software
Plug-and-play PC monitoring and control using EnerVista Viewpoint Monitoring software
Diagnostics & event recording
Power source anomaly events recorder
Detailed transfer event reporting
Local storage of 256 time-stamped events with 1 ms resolution
User-configurable alarms
Flexible feature assignment
Field modification of control features
User-configurable load control contacts
Reduced commissioning delays from incorrect configuration