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	EASY3000 HV & LV Multichannel System for Hostile Area - A3025B

	4 Channel 8 V / 25 A / 150 W Power Supply Board

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Highlights

EASY Subsystem Power Supply Module
Magnetic field and radiation tolerant
4 floating 2 ÷ 8 V / 25 A channels
150 W maximum output power per channel
VMax and IMax set by trimmer for each channel
On/Off for each channel
Channels individually controlled and protected
Line Drop Regulation on board panel
Interlock capability
48 V Service local and remote on/off
Screw Lock output connectors

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EASY3000 HV & LV Multichannel System for Hostile Area

EASY3000 LV Floating Power Supply Boards

A3025B

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A3025B - 4 Channel 8 V / 25 A / 150 W Power Supply Board

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This document shows the features of the CAEN A3025 4 Channel 8 V / 25 A Power Supply Board, developed for operation in magnetic field and moderate radioactive environment. One A3025 houses 4 floating (reversible polarity) 8 V / 25 A channels (150 W maximum output power per channel).
The connector output voltage range is 1.5 ÷ 8 V with 5 mV monitor resolution; channel control includes various alarms and protections.
The board is provided with Remote Sensing Lines to compensate for the voltage drop over the connection cables.
If the output voltage differs from the programmed value by more than 3% of voltage full scale range, the channel is signalled to be either in OVER VOLTAGE or UNDER VOLTAGE condition.
Moreover, for each channel, a voltage protection limit SVMAX can be fixed via software with 5 mV resolution and the output voltage can not be programmed beyond this value.
The output current is monitored with 10 mA resolution; if a channel tries to draw a current larger than its programmed limit it is signalled to be in OVERCURRENT condition; the SY 1527 system detects this state as a fault and reacts according to the setting of the TRIP parameter , which can be programmed in 0.1s steps from 0 to 1000s. Actually TRIP = 1000 s means infinite: in case of TRIP infinite the output current is permitted to keep the programmed limit; if the maximum output current value is reached the channel behaves like a constant current generator. In case of TRIP < 1000 s, the output current is permitted to keep the limit only for programmed time interval and then is switched off.
The maximum output voltage (VMAX) and the maximum output current (IMAX) can be fixed for each channel, through trimmers located on the front panel.

Polarity	Reversible
Output Voltage	2 ÷ 8 V (connector output)
Max. Output Current	25 A
Voltage Set/Monitor Resolution	10 mV
Current Set/Monitor Resolution	10 mA
VMAX hardware	2 ÷ 8 V
VMAX software	2 ÷ 8 V
VMAX software resolution	5 m V
Voltage Ripple	< 10 mV pp (@ full load)
Voltage Monitor vs. Output Voltage Accuracy	max. ±50 mV ±0.3% of reading
Voltage Set vs. Output Voltage Accuracy	max. ±50 mV ±0.3% of reading
Current Monitor vs. Output Current Accuracy	± 1A ± 2% of reading
Current Set vs. Output Current Accuracy	± 1A ± 2% of reading
Load Regulation	± 0.3 % (with sense wires) ± 2 % (without sense wires)
Output Power (per Channel)	150 W
Test Set Up	cable: length = 30m; diam.= 8mm (for both output and return) with sense wires connected test load: >600W load capacitance: 10µF electrolytic // 100nF ceramic (// to the load)
Weight	6kg

Description	Last Update
A3025_REV16.pdf	30.10.2009
Precautions_for_Handling_Storage.pdf	04.01.2008

Name	Last Update
A3025-A3050-A3100 Firmware	21.10.2008
A3025 User Manual	04.11.2009

Code	Description
WE3025BXAAAA	A3025B - EASY3000 L.V. channels 8 V/25 A/150 Wfloating - Bolt Conn. (4 ch)


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