TTi  EX752M 直流稳压电源

EX752M - Higher voltage dual dc bench power supply - - Specifications

 
300W Multi-mode Dual - 75V/150V

  Dual outputs with three modes of operation:
    2 x 75V/2A
    1 x 75V/4A
    1 x 150V/2A
  Independent digital voltage and current meters
    for each output with 100mV and 10mA resolution
  Constant voltage or constant current operation
  Compact design uses less bench space
  Silent fan-free cooling
  DC output switches, automatic mode indication
  Touch-proof safety terminals   
  
 DESCRIPTION
 
 The EX752M is a dual output 300 watt PSU with Multi-Mode capability. This enables it to operate as a dual power supply with two independent and isolated outputs, or as a single power supply of double the power.

As a dual, each output provides 0 to 75V at 0 to 2A （mode A）. As a single, the output can be selected as either 0 to 75V at 0 to 4A （mode B） or 0 to 150V at 0 to 2A （mode C）. In single modes, the unused half of the unit becomes compley inoperative and its displays are blanked.
 
 
 TECHNICAL SPECIFICATIONS
 
 
  OUTPUT

Voltage/Current Ranges

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）.

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

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

Line Regulation: <0?01% of maximum output for 10% line change.

Transient Response: <200?s 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 85V/170V.
Over-voltage trip operates above these levels. Reverse protection by diode clamp for currents to 3A.

Output Connections

Output Terminals: High voltage touch-proof terminals.

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

METER SPECIFICATIONS

Display Type: 3 digit meters for voltage and current;
（4 digit on second voltmeter to maintain resolution above 100V）.

Voltage Meter

Resolution: 100mV

Accuracy: 0?3% of reading ? 1 digits

Current Meter

Resolution: 10mA

Accuracy: 0?6% of reading ? 1 digits

GENERAL

Input

AC Input: 110V to 240V 50/60Hz （universal input）

VA Rating: 500VA

Temperature & Environmental

Operating Range: +5?C to +40?C, 20% to 80% RH

Storage Range: -40?C to + 70?C

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

Cooling: fan-less convection cooling

Safety & EMC

Safety: Complies with EN61010-1

EMC: Complies with EN61326

Physical

Size: 260x160x320 mm （HxD）.

Weight: 4.3kg.