Black Box IC109A-R2 Manual de instalación descargar pdf (Pagina 39)

63230-216-229-B1

Installation

LPCT Type Current Sensors

Function

Low Power Current Transducer (LPCT) type sensors are voltage-output sensors that

comply with IEC 60044-8.

The Square D range of LPCTs includes the following sensors:

CLP1

CLP2

CLP3

TLP160

TLP190.

CCA671 Connector

CCA671-1

Function

Three LPCT sensors connect to the CCA671 on the rear panel of Sepam™. The

CCA671 changes inputs from the LPCTs into a low level signal scale based on the

Full Load Amps (FLA) for each phase.

Description

1 There are three blocks of microswitches that set the CCA671 to the rated phase

current value.

2 Microswitch setting/selected rated current equivalency table (two In values per

position).

3 There are three RJ45 radial plugs to connect the LPCT sensors.

4 9-pin sub-D connector to connect test equipment (ACE917 for direct connector

or via CCA613).

Rating

The CCA671 connector is rated according by the rated primary current IN, and

measured by the LPCT sensors. IN is the current value that corresponds to the rated

secondary current of 22.5 mV. The possible settings for IN (in amps) are: 25, 50, 100,

125, 133, 200, 250, 320, 400, 500, 630, 666, 1000, 1600, 2000, 3150.

The selected IN value should be:

b entered as a Sepam™ general setting

and

b configured by microswitch on the CCA670/CCA671 connector.

Operating Mode:

1 Use a screwdriver to remove the shield located in the "LPCT settings" zone; the

shield protects three blocks of eight microswitches marked L1, L2, L3.

2 On the L1 block, set the microswitch for the selected rated current to "1" (two IN

values per microswitch).

b The table of equivalencies between the microswitch settings and the selected

rated current I

N is printed on the connector

b Leave the other microswitches set to "0"

3 Set the other two blocks of switches L2 and L3 to the same position as the L1

block and close the shield.

Radial plugs for Sepam™ Series 80 (item 3)

CAUTION

HAZARD OF NON-OPERATION

b Set the microswitches for the CCA671

connector before commissioning the

device.

b Check that only one microswitch is in

position 1 for each block L1, L2, L3, and

that no microswitch is in the center

position.

b Check that the microswitch settings on all

three blocks are identical.

Sepam™ will go into a fail-safe mode if all

three LPCT sensors are not connected.

Failure to follow these instructions can cause

incorrect operation.

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Black Box IC109A-R2 Manual de instalación Pagina 39

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