EAC - Electro Automatic Corporation

Power Factor Correction (PFC)
Primary switched, light weight & compact
19"- Bench- or Rack version
Automatic remote sensing
Output switchable (Stand-by)
Mode indications
Remote programming, IEEE-BUS option
Master-Slave-Operation
Short recovery time, High efficiency
Monitor outputs for V and I, 0...10V for 0...100% rated values
Safety: EN 60950
EMI: EN 50081 Part 2, EN 50082 - Part 2
Laboratory- and Systems applications
Output power 2000W, 3000W, 6000W & 9000W
Output voltage 0...18V, 0..36V, 0...72V (*
V and I through 10-turn potentiometer adjustable
OVP adjustable and indicated
Preset- and Actual indication for V and I
External V and I programming, 2 years warranty
High regulation, Low ripple
Analog instruments class 2.5
Option: Illuminated LCD displays for V and I

General
These new primary switched laboratory power supplies are particularly designated for all normal and highest laboratory and system applications. The units provide highly stable output voltage and current, and offer extensive facilities for various operation modes.

Design concept
The units are available as 19"-rack- or -bench version. State-of-the Art switched mode technology makes it possible, to reduce the size and the weight as with other linear regulated power supplies. The weight of a 2000 Watt unit is 16kg (35lb.)only one quarter of a comparable unit using standard technology. The height is 3HE instead of 8HE. A temperature dependent regulated fan ensures low noise development and high reliability. (1HE=44,45mm, 1TE=5,08mm).

Meters
The units are equipped with separate analog volt- and amp-meters class 2,5. As an option, illuminated 3½ digit LCD meters with 13mm digits are available. In both cases it is possible to independently switch between the value set, the actual value or the
OVP value.

Voltage- and Current setting
The output values of the voltage and current can be preset in Stand-by mode with 10-turn precision potentiometers. The push switches "Voltage" respectively "Current" must be activated. The corresponding LED's "Preset" lights on and the preset value is indicated on the meters. The LED's "Actual" are indicating that the actual values are demonstrated on the meters.

Mode Indication
When the LED "CV" light is on, the unit operates as a constant voltage source, the LED "CC" indicates that the unit operates as a constant current source. This change over is automatic.

Remote Sense
The remote sense feature can be used to compensate for the voltage loss between the output terminals and the load (max. 0,8V on 18V; 1,6V on 36V; 3,2V on 72V on each cable). In this case the "Sense" input sockets are connected to the load using a small cross section cable. The Sense terminals are on the rear of the unit. The switch over to remote sensing mode
is automatic.

Overload protection - Current regulation
The output is protected against a continuous short circuit. The max. output current is continuously adjustable from zero up to the rated current. The Lab-Power-Supplies series EA-PS 9000 are equipped with an active power factor correction circuit to achieve a power factor better than 0,98, so the reactive current becomes to nearly zero and the input current is sine wave shaped. Only actual power is drawn from the mains.