Schneider Electric K series Uživatelský manuál stáhnout pdf (Strana 36)

PM1000 Series Power Meters PLSED309039EN

Chapter 5 – Installation 08/2010

Installation Procedure

Usage

First, decide how the power meter is to be used. If you do not already have an

energy management program in operation, then your energy consultant

should be able to help you identify which load(s) offer maximum savings

potential. This will help you decide which point is to be monitored, where the

readings will be viewed from, who must have access to the instrument and

how often. Otherwise, decide the location of the power meter and install it. For

best performance, choose a location that provides all the required signals with

minimum wiring lengths.

Panel Considerations and Environment

The power meter is high-precision measuring instrument, and its operating

environment is of utmost importance. For maximum performance, the

instrument should be mounted in a dry, dust-free location, away from heat

sources and strong electromagnetic fields. To operate reliably, the following

conditions must be met:

Table 5-1: Environmental Conditions

Description

Specification

Storage temperature

-25



C to 70



C, (-13



F to 158



Operating temperature

-10



C to 60



C, (14



F to 140



Relative humidity

5% to 95%, non-condensing

The power meters should be separated from other equipment, and sufficient

space must be provided all around for cooling air to rise vertically past the

instrument. The cooling air temperature must be below the specified

operating temperature.

The panel or housing, in which the PM1000 power meter is mounted, should

protect it from dust, moisture, oil, corrosive vapors, etc.

The panel doors must be easily opened to provide easy access to the power

meter wiring for troubleshooting. Allow clearance if the unit is going to swing

out, as well as adequate slack in the wiring. Allow space for terminal blocks,

CT shorting blocks, fuses, auxiliary contactors, and other necessary

components.

Viewing

For ease of operation, the location should be preferably at, or slightly above,

eye-level. For viewing comfort, minimize glare and reflections from strong

light sources.

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