Abbreviations - TAVRIDA ELECTRIC VCB Series User Manual

This User Guide describes the Vacuum Circuit Breakers manufactured by Tavrida Electric.
Tavrida Electric circuit breakers are designed for rated voltages up to 24 kV.
Vacuum Circuit Breakers described in the current document can be used in various kinds of switchgear and
RMUs and are intended to perform switching operations in network rated and faulty modes.
The breakers are comprised of following main components:

Indoor Switching Module (ISM) - The air insulated ISM incorporates Tavrida Electric vacuum interrupters
with monostable magnetic actuators and solid dielectric insulating materials. No SF-6 or oil insulation is
used in the ISM;

Control Module (CM) - The CM is a microprocessor based controller that provides ISM operation,
protection and data logging functions;

Kits - The kits of components are used to provide circuit breaker application properties.
This guide contains information on switching operations, required check-ups and maintenance, as well as
service and disposal procedures. The purpose of the document is to provide necessary product information
for users providing installation, commissioning and utilizing installed equipment.

1.1 Abbreviations

AC Actuator coil
AS
Auxiliary switch
BIL Basic Insulation Level
EMC Electromagnetic capability
CM
Control Module
CO Close - Open operations cycle
Com Common point of contact
I/O Input / Output
ISM Indoor Switching Module
LED Light emitting diode
(P)MCB
Protective miniature circuit breaker
PS Position switch
NA Not applicable
NC Normally closed contact
NO Normally open contact
PCD Phase center distance
USB
Universal Serial Bus
VCB Vacuum Circuit Breaker
VI Vacuum interrupter