Schneider Electric K series Manual de usuario descargar pdf (Pagina 38)

PM1000 Series Power Meters PLSED309039EN

Chapter 5 – Installation 08/2010

Electrical Installation

This section describes the following:

 The need for, and selection of, potential transformers (PTs) and current

transformers (CTs).

 Auxiliary supply (control power), PT (VT), and CT connections.

For best results, ensure the following specifications:

 Torque driver preferred, hand screwdriver OK.

 TIP: Phillips head is preferred, but flat head is acceptable. Do not use

Pozidriv tips.

Screw head diameter = 3.5 mm (0.14 in.), TIP shaft diameter < 5 mm (0.2

in.).

IMPORTANT – Screwdriver shafts inserted angularly or of diameter ≥ 5 mm

(0.2 in.) will get stuck in the cover

Tightening Torque: 0.25 to 1 N.m (2.21 to 8.85 lb-in)

Loosening Torque: 0.8 to 1 N.m (7.08 to 8.85 lb-in)

Screw Travel: 6 mm (0.24 in.) less wire thickness

Torque > 1 N.m (8.85 lb-in) may strip the screw or break the cover.

Connecting cable

Table 5-3: Connecting cable

Insulation Rating

Current Rating

Voltage Circuit

> 600 VAC

> 0.1 A

Current Circuit

> 600 VAC

> 7.5 A

Or 2.5 mm

/ 14 AWG

minimum

Schneider Electric recommends the use of insulated sleeved U

lugs (2.5 mm

/14 AWG) for wiring terminals.

NOTE: Installations should include a disconnecting device, like a switch or circuit breaker, with

clear ON/OFF markings to turn-off the auxiliary supply (control power). The disconnecting device

should be placed within the reach of the equipment and the operator.

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Schneider Electric K series Manual de usuario Pagina 38