Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - ...
Applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field. These proximity…
Appareillage à basse tension - Partie 5-2: Appareils et éléments de commutation pour circuits de com...
S'applique aux détecteurs de proximité inductifs et capacitifs qui détectent la présence d'objets métalliques et/ou non métalliques, aux détecteurs de proximité ultrasoniques qui détectent la présence d'objets réfléchissantS les ultrasons, aux détecteurs de proximité photoélectriques qui détectent la présence d'objets et aux détecteurs de proximité magnétiques non mécaniques…
Provides information to users about certain fundamental service characteristics of different transformer connections and magnetic circuit designs; system fault currents; parallel operation of transformers, calculation of voltage drop or rise under load; selection of rated quantities and tapping quantities; application of transformers of conventional design to convertor loading; measuring…
Unplasticized Poly(Vinyl Chloride) (PVC) Rigid Pipe and Fittings, 150 mm inDiameter or Smaller, for ...
1. PURPOSE AND SCOPe
The purpose of this standard is to establish requirements for dimensions,
characteristics and test methods relating to rigid pipe* and fittings,
manufactured from PVC compounds, used in underground applications for conveying
wastewaters flowing by gravity.
It applies to rigid, non-perforated, smooth interior wall (see note), pipe and
fittings with a nominal diameter…
