Specifications - EX-R Series

Brochure Part No. 82100-1370

EX-R MODEL RANGE

Voltage/Current Levels

EX355R

0 to >35V; 0 to >5A

(175W nominal power)

EX1810R

0 to >18V; 0 to >10A

(180W nominal power)

EX2020R

0 to >20V; 0 to >20A

(400W nominal power)

EX4210R

0 to >42V; 0 to >10A

(420W nominal power)

EX354RD

2 x (0 to >35V; 0 to >4A)

(280W nominal power)

EX354RT

2 x (0 to >35V; 0 to >4A)

(305W nominal power)

plus <1.5 to >5.0V @ 5A

OUTPUT SPECIFICATIONS

Output Setting & Control

Voltage Setting:

By coarse and fine controls.

Current Setting:

By single logarithmic control.

Output Mode:

Constant voltage or constant current with automatic cross-over.

CC indicator lit in constant current mode.

Output Switch:

Electronic, non isolating. Preset voltage and current limit displayed

when Output is off. On state indicated by LED.

Output Performance

Ripple & Noise:

Typically <2mV rms, <10mV pk-pk (EX355R, EX354RD, EX354RT)

Typically <2mV rms, <20mV pk-pk (EX1810R, EX2020R, EX4210R)

(CV mode, 20MHz bandwidth)

Load Regulation:

<0·01% of maximum output for a 90% load change

(using remote sense).

Line Regulation:

<0·01% of maximum output for 10% line change.

Transient Response: <200µs to within 50mV of setting for a 5% to 95% load change.

Temp. Coefficient:

Voltage: typically <100ppm /°C.

Output Protection

Output Protection:

Outputs will withstand forward voltages up to 40V (EX355R, EX354RD,

& EX354RT); 22V (EX1810R); 25V (EX2020R); 48V (EX4210R).

Reverse protection by diode clamp for currents to 3A.

Output Connections

Output Terminals:

Universal 4mm safety binding posts on 19mm (0·75”) spacing.

Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs, fork terminals and bare wires.

Remote Sense

Sense Selection:

Voltage sensing is selected as Local or Remote by front panel switch.

Sense Terminals:

Sprung loaded screw-less terminals.

METER SPECIFICATIONS

Display Type:

Dual 4-digit meters, 14mm (0·56”) LED.

Voltage Meter

Resolution:

10mV

Accuracy:

0·3% of reading ± 3 digits

Current Meter (EX355R, EX354RD, EX354RT)

Resolution:

1mA

Accuracy:

0·5% of reading ± 3 digits

Current Meter (EX1810R, EX2020R, EX4210R)

Resolution:

10mA

Accuracy:

0·6% of reading ± 3 digits

AUXILIARY OUTPUT (EX354RT only)

Voltage:

Variable <1.5V to >5V by front panel control.

Meter accuracy:

0.3% ± 4 digits.

Current limit:

5A minimum.

Load regulation:

<0.5% for 90% load change.

Line regulation:

<0.1% for 10% line voltage change.

Ripple & Noise

Typically <2mVrms, <10mVpk-pk (20MHz bandwidth):

Output Protection:

Output will withstand up to 7V forward voltage.

Diode clamp reverse protection for currents up to 3A.

Output Terminals:

Universal 4mm safety binding posts on 19mm (0·75”) spacing.

Status Indication:

UNREG lamp.

GENERAL SPECIFICATIONS

Input

AC Input:

EX354RD, EX354RT - 110V to 240V 50/60Hz (universal input);

Other Models - 230V AC ± 10% 50/60Hz; 115V to order.

Installation Category II

VA Ratings:

EX810R, EX355R - 400VA; EX354RD, EX354RT - 500VA

EX2020R, EX4210R - 800VA.

Temperature & Environmental

Operating Range:

+5ºC to +40ºC, 20% to 80% RH

Storage Range:

-40ºC to + 70ºC

Environmental:

Indoor use at altitudes up to 2000m, Pollution Degree 2.

Cooling:

EX1810R, EX355R, EX354RD, EX354RT - fan-less convection cooling;

EX2020R, EX4210R - fan assisted using low-noise brushless dc fan.

Safety & EMC

Safety:

Complies with EN61010-1

EMC:

Complies with EN61326

Physical

Size:

Single output models - 140x160x320 mm (WxHxD).

Dual and triple output models - 260x160x320 mm (WxHxD).

Weight:

EX810R, EX355R - 3.0kg; EX2020R, EX4210R - 3.6kg

EX354RD, EX354RT - 4.3kg.

Accuracy specifications apply for the temperature range 18°C to 28°C after 1 hour warm-up.

Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the

right to alter specifications without prior notice.

EL302P, EX355P, EX752M

EL302P/EL302P-USB & EX355P/EX355P-USB

Electronic and mechanical specifications are as per EL302R and EX355R except as follows:

Voltage/Current Levels

EL302P

0 to 30V; 0 to 2A

(60W nominal power)

EX355P

0 to 35V; 0 to 5A

(175W nominal power)

Output Setting & Control

Voltage Setting:

By coarse and fine rotary encoders or RS-232 interface.

Resolution 10mV

Current Setting:

By single rotary encoder or RS-232 interface. Resolution 10mA

Metering

Display Type:

4 digit meter for voltage and 3 digit meter for current.

Resolutions:

100mV; 10mA

Accuracy:

Voltage - 0·3% of reading ± 1 digit,

Current - 0·6% of reading ± 1 digits

Note that in constant voltage mode the meter will show the set voltage to a resolution of

10mV. However the metering resolution is limited to 100mV when in constant current mode,

and the last digit will be set to zero.

Voltage Sensing

Voltage sensing is local only (i.e. no remote sense).

Power-down Memory

The power supply saves the voltage, current and output-enable status at power down and

restores the settings at power up.

Remote Control

Isolation:

Fully opto-isolated from power supply output.

Remote Functions:

Set Voltage, Set Current, Set Output On/Off, Read Voltage,

Read Current, Read On/Off, Read Mode (CV or CC).

Setting Accuracy:

Voltage 0.3% ±20mV. Current 0.6% ±20mA.

Setting Resolution:

Voltage 10mV. Current 10mA.

Readback Accuracy: Voltage 0.3% ±100mV. Current 0.6% ±20 mA.

Readback Resolution: Voltage 100mV. Current 10mA.

RS-232 Interface (EL302P and EX355P only)

Baud Rate:

Variable from 600 baud to 9,600 baud.

USB Interface (EL302P-USB and EX355P-USB only)

Conformance:

USB 2.0. Compatible with USB 1.x.

EX752M

Electronic and mechanical specifications are as per EX354RD except as follows:

Voltage/Current Levels

EX752M

2 x (0 to >75V; 0 to >2A)

(300W nominal power)

Multi-Mode Operation

Three modes of operation can be selected via a rotary switch:

Mode A:

Two independent and isolated outputs (75V/2A each).

Mode B:

One output of double the current capability (75V/4A).

(Unused output is disabled and its displays are blanked).

Mode C:

One output of double the voltage capability (150V/2A).

(Unused output is disabled and its displays are blanked).

Metering

Display Type:

3 digit meters for voltage and current;

(4 digit on second voltmeter to maintain resolution above 100V).

Resolutions:

100mV; 10mA

Accuracy:

Voltage - 0·3% of reading ± 1 digit,

Current - 0·6% of reading ± 1 digits

Output Performance

Ripple & Noise:

Typically <2mV rms, <15mV pk-pk (CV mode, 20MHz bandwidth)

Load Regulation:

Modes A and B - <0·01%; Mode C - <0·1% + 2mV (90% load change)

Voltage Sensing

Voltage sensing is local only (i.e. no remote sense).

Output Protection

Output Protection:

Outputs will withstand forward voltages up to 85V/170V.

Over-voltage trip operates above these levels.

Reverse protection by diode clamp for currents to 3A.

Output Terminals

High voltage touch-proof terminals.

Designed and built in Europe by:

Thurlby Thandar Instruments Ltd.

Glebe Road, Huntingdon, Cambridgeshire. PE29 7DR United Kingdom

Tel: +44 1480 412451 Fax: +44 1480 450409

Email: sales@aimtti.com Web: www.aimtti.com