Firma:              BioRad

Modell:            Powerpac 300

Kommentar:    Dokumente dt.

OVERVIEW

PowerPac power supplies provide constant voltage or constant current to instruments used in electrophoresis and blotting. The PowerPacs are capable of the following adjustable outputs:

PowerPac 300

Voltage output:            Adjustable from 10 to 300 volts in increments of 1 volt.

Current output:            Adjustable from 4 to 400 milliAmps (mA) in increments of 1 mA.

Power output: 75 watts (maximum)

Up to four electrophoresis cells can be connected in parallel to the power supply.

The PowerPacs are programmed with default limit values for voltage and current. These are the values which are available when the unit first is turned on. These values may be changed for each application.

The power supplies operate at the values specified for the constant parameter. However, to prevent damage to your electrophoresis cell, both PowerPacs provide automatic crossover to constant current or constant voltage, depending an which set value is first reached. When the set limit of the non-constant parameter is reached, and the power capability of the unit is not exceeded, the power supply will switch, making the non-constant parameter the new constant parameter.

The PowerPac 300 power supplies offer a number of features, including the following:

•     Constant voltage or constant current operation with automatic crossover.

•     Timer control.

•     Viewing angle adjustment.

•     3-digit LED display.

•     Stackable case.

•     Automatic detection of no-load conditions and rapid changes in resistance.

•     Automatic completion of a run interrupted by a power failure, when user enabled.

Specifications

Input Power

100/120 V model:                              90 - 132 VAC, 47 Hz - 63 Hz

220/240 V model:                              198 - 264 VAC, 47 Hz - 63 Hz

Fuses

100/120 V units:                                2.5 A, 125 V, 5mm x 20mm, Type T

220/240 V units:                                2.5 A, 250 V, 5mm x 20 mm, Type T

Input Power Cord:                             3-wire; grounded

Output (Programmable)                   Constant voltage, constant current; with automatic   crossover

Voltage:                                             10 V to 300 V, fully adjustable in 1 V steps

Current:                                             5 mA to 400 mA, fully adjustable in 1 mA steps

Power (max.):                                   75 W

Terminals:                                         4-pair recessed female banana jacks, floating in parallel

Timer Control:                                   001 to 999 minutes, fully adjustable

Resolution

Ripple:                                               ±1% @ 300 V and 75 W

Line Regulation:                                ±1% @ 300 V and 75 W

                                                           from 90 - 132 V AC or 198 - 264 V AC

Load Regulation:                               ±1% @ 300 V for a 50% change in output load

Drift:                                                  ±1% after 30 min. warm up at 300 V and 75 W

Noise:                                                27 dBA

Readout Stability

Volts:                                                 ±1V

Current:                                             ±1 mA

Safety Features

No Ioad detection:                             Indicated by error message on LED display

Sudden load change

detection:                                          Indicated by error message on LED display

Overload/short

circuit protection:                              Indicated by error message on LED display; fuse on both    hot and neutral

Ground Leak Detection:                    Indicated by error message on LED display if the ground     current is greater

(PowerPac 200 only)                        than 500 µA.

Auto power up

after power failure:                            User-selectable, setup values maintained

Safety

Compliance:                                     I.E.C. 1010

EMI                                                    Conforms to CE standards for Emissions and Immunity;

                                                         tested only at 220 V. See Declaration of Conformity for        details. TUV EMC certification.

Display Functions:                            3-digit LED displays voltage, current, time

Function Modes:                               Constant voltage, constant current, timer

                                                         User-selectable automatic power-up after power failure

Environmental

Operating Temp.:                             0 - 40°C

Humidity:                                           0 - 95%, in the absence of condensation

Dimensions:                                     29 (L) x 21 (W) x 8 (H) cm. Unit is stackable

Weight:                                             1.8 kg

Mini-Protean II Alignment Card

Assemble gel sandwich wich alignment card between glass plates. Insert sandwich into clamp assembly Align sandwich in alignment slot. Tighten clamp screws. Remove alignment card.

Alignment card can also be used in the Mini-PROTEAN II Multi-Casting Chamber