Emergency Procedures; Built-In Safety Features - GE EPS 3501 XL Operating Instructions Manual

2 Safety instructions
2.3

Emergency procedures

2.3 Emergency procedures
This section describes how to do an emergency shutdown of EPS 3501 XL. The section
also describes the result in the event of power failure.
Emergency procedures
In an emergency situation, do as follows to stop the run:
Step
1
Power failure
The result of a power failure depends on which unit that is affected.
Power failure to...
EPS 3501 XL

2.4 Built-in safety features

The power supply has the following built-in safety functions:
Function
Functional earth
leakage
Start current check
20
Action
Switch off power to the instrument by pressing the Power switch to the 0
position. If required, disconnect the mains power cord. The run is
interrupted immediately.
will result in...
The run is interrupted immediately, in an undefined state
Description
Should the power supply be connected to an electrophoresis
unit that has a leakage path to earth, the EPS 3501 XL will
detect this fault and turn off the high voltage.
The power supply checks that the resistance is not higher
than a specified limit at a low safety voltage (<40V). If this
resistance is too high, the high voltage is turned off.
Too high resistance can be caused by for example:
- an electrophoresis unit incorrectly connected
- use of buffer with exremely low conductivity
This function can be disabled to perform certain applications,
see Electrophoresis Power Supply EPS 3501 XL User Manual.
Electrophoresis Power Supply EPS 3501 XL Operating Instructions 28-9639-69 AA