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ETAsys.com
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
ETA-ECS3
Power Sequencer & Conditioner
INTRODUCTION
Thank you for purchasing the ETA Systems ETA-ECS3 AC Power Sequencer and Conditioner. The ETA-ECS3 has been designed to
meet most installation requirements for AC power distribution and equipment power protection. The 15A compact 1RU unit features
three sequential timing sections that can be activated via the unit, or remotely. Front panel activation is via a momentary switch, while
rear activation is via a momentary contact closure, or by 5-24VDC trigger feed. AC Mains Voltage can be monitored via the front panel
from the precision Digital Volt Meter. To light your rack, the ETA-ECS3 has incorporated a front panel pull-out dimmable LED tube light.
The rear of the rack can be illuminated by the optional Atlas Power 16" gooseneck LED lamp, AP-GNL18, connected via an XLR style
socket. LED lamps are far superior in longevity along with heat reduction when compared to traditional incandescent lamps and the
XLR base mounts are also superior to the commonly used BNC type base. If a 15A AC Mains power source is not enough to meet the
amperage demand of your system, the ETA-ECS3 provides a sequenced 12VDC output that can be used to trigger other devices such
as the ETA Systems ETA-20SH 20A stand alone AC power module.
The ETA-ECS3 also features noise filtering for unwanted Radio Frequency Interference (RFI) that are commonly introduced into the AC
lines by nearby radio transmitters or wireless products. EMI filters are incorporated to reduce noise from Electromagnetic Interference
(EMI) from such items as electric motors and switching power supplies. The benefit of these filters can be seen on video products or
audibly by reducing static pops and external signal interference.
Unstable AC Mains voltage is one of the main reasons for equipment failure. AC Spikes, or Transients, are commonly caused by light-
ning storms or utility power plant grid switchovers. The amount of energy that can be injected into the power system can be immense
with voltages reaching 6kV or amperage peaks of 3000A. These spikes are very fast and usually only last for a very short period of
time. To protect against this potential problem, the ETA-ECS3 features Dual Clamping Suppression technology (DCS). If a spike intrudes
the AC system, the ETA-ECS3 incoming AC Mains has special suppression circuitry to eliminate the unwanted energy and in the
unlikely event of any energy getting passed the first stage, each sequenced output section has redundant DCS circuitry clamping the
unwanted energy. This circuitry is very fast and can suppress unwanted energy within a nanosecond, while sustaining the suppression
up to 2 milliseconds, thus ensuring virtually trouble free protection.
High and low AC Main line voltages are another major contributor to equipment failures. High line can also be known as surges.
Surges usually are a slower steady state rise in voltages ranging from 128VAC and up. They can be caused from fluctuations from the
utility company’s power lines or industrial equipment turning on and off on the same power leg of the building’s incoming AC. Low line
is also known as brownouts. This happens when the AC Mains drops below 107VAC. Most of the time it is caused by the utility com-
pany not being able to supply enough power during heavy utility consumption time periods, such as heat waves. Another factor would
be from voltage drops in AC lines due to long transmissions. The ETA-ECS3 will not only inform you if one of these conditions occurs,
but under extreme variances in the AC Mains, it will shut the power to the equipment off. The Abnormal Voltage indicator on the front
panel will flash if the AC Mains is between 101VAC and 107VCA or 128VAC and 132VAC. This is to inform you that a surge occurred
and may have damaged voltage sensitive equipment. If an extreme voltage swing occurs below 101VAC or above 132VAC, the
ETA-ECS3 Extreme Voltage Shutdown (EVS) protection circuit will automatically activate and turn all outlets off until it is manually reset.
The ETA-ECS3 offers sequenced power management control, along with noise filtering and spike/surge protection making it the most
compact, effective power management protection system on the market today.