PLH250 英国TTi PLH250

PLH250英国(tti)直流稳压电源,PLH250：Bench/System Higher Voltage DC Power Supply, Linear Regulation 250V/0.37, No Interfaces

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PLH250英国(tti)直流稳压电源,PLH250： 

PLH250

Bench/System Higher Voltage DC Power Supply, Linear Regulation 250V/0.37, No Interfaces 

• Single output 120V 90W or 250V 94W
• Linear regulation - for the best performance
• Ultra-compact design - uses up less space
• True Analogue controls - for ease of use
• S-Lock function - instantly lock settings
• V-Span function - customize the voltage range
• Low current range and current meter averaging
• DC output switches and "view limits" button
• Selectable remote sense terminals

P versions add:

• Full digital remote control and readback
• RS-232, USB and LAN (Ethernet), GPIB optional
• LAN Interface conforms with LXI standard
• IVI Driver supplied
• Interfaces are opto-isolated from outputs
• Isolated Analogue remote control of V and I
• Front and rear terminals

PLH250英国(tti)直流稳压电源,PLH250： 

MODEL RANGE PLH120 - 0 to 120V at 0 to 750mA PLH250 - 0 to 250V at 0 to 375mA Lower Voltage Models - Go  Here for New PL and PL-P Series PL068 - 0 to 6V at 0.to 8A PL155 - 0 to 15V at 0 to PL303 - 0 to 30V at 0 to 3A PL601 -  0 to 60V at 0 to 1. PL303QMD - 2 x (0 to 30V at 0 to 3A) PL303QMT - 2 x (0 to 30V at 0 to 3A) plus 0 to 6V at 0.to 8A OUTPUT SPECIFICATIONS Voltage/Current Levels PLH120 - 0 to 120V / 0.01mA to 750mA (90W max.) PLH250 - 0 to 250V / 0.01mA to 375mA (94W max.) Note: Actual maxima for voltage and current are typically 1% greater than the figures given above except for the voltage control on the PLH250 which is limited to 250.0V.

PLH250英国(tti)直流稳压电源,PLH250： 

Output Setting & Control

Voltage Setting: By coarse and fine controls.
Current Setting: By single logarithmic control.
Low Current Range: Reduces max. current to 75mA and increases resolution to 0.01mA.

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. 
Output rise time no load <20ms.

View Settings: With the output On, the meters show actual voltage and current.
The preset levels can be viewed and adjusted at any time by pressing the View Settings button.

V-Span (Voltage Span Control)

The voltage adjustment range can be controlled by digital setting of the end-stop values of
the coarse voltage control to any desired values. The range for Vmax is 1V to 120V or 250V depending on model.
The range for Vmin is 0 to (Vmax – 1V).

S-Lock (Settings Lock)

Voltage and current settings can be locked by a single button press. Lock accuracy is equal to the meter accuracy (see Meter Specification).

Output Performance

Ripple & Noise: Normal mode voltage: <2mV rms and 10mV p-p
Normal mode current: <10uA rms ; <1uA rms on 75mA range
Common mode current: <20uA rms
Load Regulation: Voltage - <0·01% + 10mV.
Current - typically 0·01% + 50μA.
Line Regulation: Voltage <0·01% + 10mV for 10% line change.
Current <0·01% + 50μA. for 10% line change.
Transient Response: <250μs to within 50mV of setting for a 90% load change.
Temp. Coefficient: Voltage: typically <(50ppm + 2mV)/°C
Current: typically <(100ppm + 0.1mA)/°C;
<(100ppm + 0.01mA)/°C on 75mA range.

Output Protection

Output Protection: Output will withstand forward voltages of up to rated output voltage.
Reverse protection by diode clamp for currents to 3A.
OVP and OCP Trips: Voltage or current measured to be in excess of 105% of the rated maximum will cause the output to trip off.
Over-temperature: Output trips off for over-temperature.
Safety Interlocks: Operations that could cause an unexpected change in voltage or current settings are interlocked with the output switch.

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, 10mm (0·39”) LED.
Voltage Meter 
Resolution: 100mV
Accuracy: ± (0·1% of reading + 100mV)
Current Meter
Resolution: 0.1mA (0·01mA on 75mA range)
Accuracy: ± (0·3% + 0.3mA); ± (0·3% + 0·03mA) on 75mA range
Meter Damping: Normally 20ms, switchable to 2 sec for averaging rapidly varying loads

GENERAL SPECIFICATIONS

Input
AC Input: 230V AC or 115V AC ± 10%, 50/60Hz. Installation Category II
Input Power: 280VA max.
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: Intelligent variable-speed low noise fan assists convection.
Safety & EMC
Safety: Complies with EN61010-1
EMC: Complies with EN61326
Physical
Size: PLH models - 107mm x 131mm (¼ rack 3U) x 288mm,
PLH-P models - 107mm x 131mm (¼ rack 3U) x 315mm,
(sizes exclude feet, knobs and terminals).
Weight: PLH models - 4·9kg;
PLH-P models - 5.0kg

OPTIONS

Rack Mount (RM450)
19 inch 4U rack mount suitable for up to four PLH series power supplies. Alternatively they
can be mixed with the lower voltage New PL series in a single rack with up to four single
power supplies, two dual power supplies, or any mixture. Blanking plates are provided for
unused positions. The 4U height provides limited ventilation space above and below the power
supplies.

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