Search results with tag "Instrument transformers"
Specific Accreditation Guidance - NATA
nata.com.auInstrument and ratio transformer 10 Instrument transformers may be extended to 20 years with annual intercomparisons Instrument transformer test set. ... meter accuracy Noise analyser Integrated in firmware Initial Initial calibration is not necessary where the analyser has already been type approved. Where the
Medium voltage products UniSec Technical Guide
library.e.abb.com69 7.4 Instrument transformers 81 7.5 Fuses 85 7.6 Protection relays 88 7.7 Use of SF 6 gas 88 7.8 Information publications 89 8. Environment 89 8.1 Emissions 89 8.2 Thermal power dissipated 90 8.3 Recycling 91 Appendix
Messwandler - zelisko.at
www.zelisko.at4 Messwandler // Instrument Transformers 1.1.1 ALLGEMEINE ANGABEN ZUR WANDLERAUSFÜHRUNG Alle Stromwandler im ersten Teil dieses Kataloges sind Gieß-harzwandler, die wartungsfrei, vollkommen trockenisoliert
Instrument Transformer Basics - WMEA
wmea.netInstrument Transformer Basics What is an instrument transformer? Voltage Transformer (Sometimes called Potential Transformers, VTs, or PTs) It is simply a …
elite 440 - Secure Meters
www.securemeters.comŸ High accuracy: Class 0.2s, 0.5s, 1.0 ... of instrument transformer. In case of 3Ø3W, VN is replaced by V2 . LT3Ø4W SHORT CTs BEFORE OPENING CURRENT TERMINALS ! 1 2 3 N V 1 I1 I2 I3 V2V3VN S1S2 S1S2 S1S2 AUX +/P -/N P N RS-485 + - SG Auxiliary supply
Customer Guide for Electric Service for Ohio - FirstEnergy
www.firstenergycorp.comAdded “ When the space above the instrument transformer cabinet is intended as the location for the meter or meters, it is necessary that adequate space be reserved for this purpose. ” 7.10 . Revised short -current interrupting rating to 85,000 amps for the Erickson Electrical CT cabinets.
Customer Guide for Electric Service for WV - FirstEnergy
www.firstenergycorp.com• Current Transformer (CT): Current Transformer is a transformer whose secondary current is a precise fraction of its primary current (refer to instrument transformer definition). • Customer: The party using the Company's service, or in applicable cases, the property owner or
Instrument Transformer Basic Technical Information and …
www.gegridsolutions.comThe ratio of an instrument transformer is the relationship of its primary rating to its secondary rating. For example, the potential transformer mentioned above having a rating of 480:120 volts will have a ratio of 4:1 and the current transformer having a rating of 400:5 amperes will have a ratio of 80:1. Magnetic Circuits Rating and Ratio