PL303QMD/PL303QMT双输出线性稳压电源

英国TTi PL303QMD/PL303QMT双输出线性直流电源

新的PL系列高性能线性直流稳压电源，它取代了原来的PL系列已在世界各地的许多组织选择的实验室电源。新的PL系列保留原来的PL系列真实的模拟控制，但将其与新的数字为基础的方便的功能，更高的功率密度，和优越的性能。 PL303QMD不仅仅是两个PL303单组蔬菜电源，它有四种操作模式： 两组完全隔离，独立输出 两组保持隔离输出，但主输出电压控制输出相同的电压 并联输出的功率可以达到180W，电流可以提供高达6A 分离率跟踪：如上所述，但是从电压可设置为任何比例的主电压将保留百分比作为主电压的变化。 两个输出的同步控制

两/关闭按钮，除了个别的开关为每个输出，并让两个输出被打开或关闭，同时通过按下一个按钮。 输出的同步开关的电路可如果一个电压轨是目前没有其他受损的重要性日益增加。

PL303QMT 是三组输出线性直流电源，PL303QMT具有相同功能的PL303QMD，但有一个完整的性能第三的输出一个低电压，高电流能力。 第三组输出可以提供0-6V分辨率为1mV，电流8A。所有的主要输出功能纳入，包括S -锁，可选遥感，和一个0.1分辨率低电流范围。

产品型号： PL068 - 0V to 6V/1mA to 8A; 0V to 6V/0.1mA to 500mA; (48W max.) PL155 - 0V to 15V/1mA to 5A; 0V to 15V/0.1mA to 500mA; (75W max.) PL303 - 0V to 30V/1mA to 3A; 0V to 30V/0.1mA to 500mA; (90W max.) PL601 - 0V to 60V/1mA to 15A; 0V to 60V/0.1mA to 500mA; (90W max.) PL303QMD - two identical outputs as per PL303, with Tracking and Parallel modes (see Modes section) PL303QMT - as per PL303QMD plus third output as per PL068 (above) Note: Actual maxima for voltage and current are typically 1% greater than the figures given above.

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 rise time no load <15ms.

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 0.1V to 6V/15V/30V/60V depending on model.

The range for Vmin is 0 to (Vmax - 0.1V).

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 and Noise: Normal mode voltage: <0.4mV rms and 2mV p-p; Normal mode current: <0.2mArms; (<40uA on 500mA range); Common mode current: <5mA rms

Load Regulation: Voltage - <0.01% + 2mV. Current - typically 0.01% + 500uA.

Voltage specification applies for any load change, measured at the output terminals. When using remote sense add 0.5mV per 0.1V drop in the positive output lead (max. sense lead resistance 0.5 Ohm).

Line Regulation: Voltage <0.01% + 2mV for 10% line change. Current <0.01% + 250uA. for 10% line change.

Transient Response: <50ms to within 50mV of setting for a 90% load change.

Temp. Coefficient: Voltage: typically <(50ppm + 0.5mV)/oC; Current: typically <(100ppm + 1mA)/oC;

(100ppm + 0.1mA)/oC on 500mA range.

Output Protection

Output Protection: Output will withstand forward voltages of up to 20V above rated output voltage. Reverse protection by diode clamp for currents up to 3A.

Over-temperature: Output trips off for over-temperature.

Safety Interlocks: Operations that could cause an unpredictable change in voltage or current settings are interlocked with the output switch.

Output Connections

Output Terminals: Universal 4mm safety binding posts on 19mm (075) spacing.

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

Remote Sense

Sense Selection: Voltage sensing can be selected as Local or Remote by front panel switch.

Sense Terminals: Sprung loaded screw-less terminals.

MODES OF OPERATION (PL303QMD/QMT only)

The PL303QMD and PL303QMT have four modes of operation - Independent, Isolated Tracking, Isolated Ratio Tracking, and True Parallel.

Independent: The two outputs are completely independent and electrically isolated from each other.

Tracking: The two outputs remain electrically isolated, but the voltage control of the Master output sets an identical voltage on the Slave output.

Ratio Tracking: As Tracking, but the Slave voltage can be set to to any percentage of the Master output and will retain that percentage ratio as the Master voltage is varied.

Parallel: All of the power (up to 180 watts) is channelled to the Master output which can consequently supply up to 6 amps. The Slave output is turned off and its meters are blanked.

Both On/Both Off: The Both On and Both Off buttons are in addition to the inpidual switches for each output, and allow both outputs to be turned on or off synchronously by a single button press.

METER SPECIFICATIONS

Display Type: Dual 4-digit meters, 10mm (039) LED.

Voltage Meter

Resolution: 10mV; Accuracy: +/-(0.1% of reading + 10mV)

Current Meter

Resolution: 1mA (0.1mA on 500mA range); Accuracy: +/-(0.3% + 0.005A) to 3A; +/-(05% + 0.005A) to 5A;

+/-(03% + 0.5mA) on 500mA range

Meter Damping: Normally 20ms, switchable to 2 sec for averaging of rapidly varying loads.

GENERAL

AC Input: 230V AC or 115V AC +/-10%, 50/60Hz. Installation Category II; Input Power: 280/560/840VA max.

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: Complies with EN61010-1

EMC: Complies with EN61326

Size: Single - 107mm wide x 131mm high ( rack 3U) x 288mm deep, excluding feet, knobs and terminals;

Dual - 214mm wide x 131mm high ( rack 3U) x 288mm deep, excluding feet, knobs and terminals.

Triple - 321mm wide x 131mm high ( rack 3U) x 288mm deep, excluding feet, knobs and terminals.

Weight: Single - 45kg; Dual - 8.5kg, Triple 12.8kg