CARLO GAVAZZI WM23-96 - PROGRAMMING Bedienerhandbuch PDF herunterladen (Seite 33)

PQA700 is a complete power quality analyzer suitable to

check the electrical phenomena according to what is

required by the EN50160 Standard (Harmonics, Supply

voltage dips, Supply voltage variations and Supply

interruptions). The basic features are particularly interesting

because they include: a display which, thanks to its shape,

shows the information clearly and neatly; a built-in impact

dot matrix printer for printing the measurement results

manually and automatically; a rechargeable battery to

allow the user to take measurements even under tough

disturbances and special power supply conditions; an

RS232 communication port to download and process the

measurements adequately and last but not least an easy

and intuitive operating mode.

• Base accuracy 0.5% RDG (current, voltage)

• Measurement of single phase and system variables: V, A,

W, VA, var, TPF, DPF, Hz, Wh, varh-L, varh-C, VAh

• Complete Harmonic analysis up to the 50th harmonic

• 20ms continuous signal sampling

• Automatic storage of MIN, MAX and AVG values

• Time-based curve distribution of variable and load

• Statistic management of stored variables

• Oscilloscope functions

• Built-in printer

• RS232 port

• Rechargeable battery

• Complete accessory set

• Carrying case

• Analysis software

All this is supplied together with a rich equipment of

accessories including a set of three accurate clamp-on

probes which allows to take measurements up to 1200A

(with two selectable full scales: 100A or 1000A) a complete

set of cables, an analysis software. On request a 3000A

flex clamp probe is available

(model: Flex3000Q). And

finally a modern and rugged

carrying case. The compact

dimensions, the rugged

construction, the shape and

the reduced weight of the

instrument simplify its use

and its location under any

condition of installation.

PQA700

Starting from 1994 with the publication of the EN50160

Standard by CENELEC, the idea of quality of the electric

service has been introduced and made executive for the

public electrical network at low and medium voltage.

This event underlines, for the first time, the necessity to

introduce some measuring parameters of the electric

product, with the indication of its basic features and the limits

within which it is considered as a quality product. The items

featuring the service/product in the origin of the installation

are the following: its waveform, its frequency, its magnitude

and symmetry (in a three-phase system); the relevant

conditions are: normal use and emergency use.

It is clear that the characteristics of the electric product not

only depend on the skill of the supplier in the electrical

network management, but also on how the electric product is

used. The improvement in the quality of the electric service

obviously implies a cost both for the supplier and for the

user. The supplier’s costs can be summed up in the

updating, extension and development of the electrical

network; the user’s costs: any necessary disturbance

compensation, any necessary subordinate electric

connection, any possible payment of penalties due to a low

power factor or to the overcoming of the limits of power

demand. Some additional costs can be even higher and

unforeseeable, such as those due to failures of the loads and

to the subsequent unplanned maintenance of the machines

and of the installations merely due to electric problems.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 43 44

Kommentare zu diesen Handbüchern

Keine Kommentare

CARLO GAVAZZI WM23-96 - PROGRAMMING Bedienerhandbuch Seite 33

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Messen, Testen & Steuern CARLO GAVAZZI WM23-96 - PROGRAMMING