TAVRIDA ELECTRIC ISM15_LD_1 Series, Инструкция по применению

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Glossary
The following abbreviations are used in this operating manual:
AR: Automatic reclosing
CM: Control module
CO: Close open cycle
ISM: Indoor switching module
LED: Light emitting diode
MCB: Miniature circuit breaker
Make time
The make time is the time period from the energising of the closing circuit to the time when the current
begins to flow in the first pole.
Closing time
The closing time is the time period from the energising of the closing circuit to the time when all three
poles have contact.
Pre-arcing time
Interval of time between the initiation of current flow in the first pole during a closing operation and the
instant when the contacts touch in all poles for three-phase conditions and the instant when the contacts
touch in the arcing pole for single-phase conditions.
Opening time
The opening time is the time period from energising of the closing circuit up to the time when all the
switching poles are separated.
Break time
The break time is the time period from the energising of the closing circuit up to the time when the arcs
of all the poles are extinguished.
Open-close time (during AR)
Interval of time between the instant when the arcing contacts have separated in all poles and the instant
when the contacts touch in the first pole during a reclosing cycle.
Dead time (during AR)
Interval of time between final arc extinction in all poles in the opening operation and the first
reestablishment of current in any pole in the subsequent closing operation.
NC: Normally closed contact
NO: Normally open contact
PCD: Pole center distance
SCADA: Supervisory control and data aquisition
SF6: Insulating gas sulfur hexafluoride
VCB: Vacuum circuit breaker
VI: Vacuum interruptor