TTi Laboratory Power Supply Products

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TECHNICAL SPECIFICATIONS

OUTPUT

Voltage/Current Ranges

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) plus <1.5 to >5.0V @ 5A (305W nominal power)

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 in constant current mode.

Output Switch: Electronic, non isolating. Preset voltage and current limit displayed when Output off.

Output Performance

Ripple & Noise: Typically <2mV rms, <10mV pk-pk, (EX355R, EX354RD, EX354RT)  CV mode, 20MHz bandwidth
.                       Typically <2mV rms, <20mV pk-pk (EX1810R, EX2020R, EX4210R)

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

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.