sepam 20 user manual - Schneider Electric

Commissioning General examination and
preliminary actions
PCRED301005EN - 06/2008
Checking to be done prior to energizing
Apart from the mechanical state of the equipment, use the diagrams and BOMs
provided by the contractor to check:
b Identification of Sepam and accessories defined by the contractor
b Correct earthing of Sepam (via terminal 17 of the 20-pin connector)
b Conformity of Sepam auxiliary voltage (indicated on the label stuck to the right side
of the base unit) with the auxiliary supply voltage of the switchboard (or cubicle)
b Correct connection of the auxiliary voltage (terminal 1: AC or positive polarity;
terminal 2: AC or negative polarity)
b Presence of a residual current measurement core balance CT and/or additional
modules connected to Sepam, when applicable
b Presence of test terminal boxes upstream from the current inputs and voltage
inputs
b Conformity of connections between Sepam terminals and the test terminal boxes.
Connections
Check that the connections are tightened (with equipment not energized).
The Sepam connectors must be correctly plugged in and locked.
Energizing
1. Switch on the auxiliary power supply.
2. Check that Sepam performs the following initialization sequence, which lasts
approximately 6 seconds:
b Green ON and red LEDs on
b Red LED off
b Pickup of "watchdog" contact.
The first screen displayed is the phase current or phase voltage metering screen
according to the application.
Implementation of the SFT2841 software for PC
1. Start up the PC.
2. Connect the PC RS 232 serial port to the communication port on the front panel of
Sepam using the CCA783 cord.
3. Start up the SFT2841 software, by clicking on the related icon.
4. Choose to connect to the Sepam to be checked.
Identification of Sepam
1. Note the Sepam serial number given on the label stuck to the right side of the base
unit.
2. Note the Sepam type and software version using the SFT2841 software, "Sepam
Diagnosis" screen. (This information is also available on the advanced UMI, in the
Sepam general settings).
3. Enter them in the test sheet.
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