Ormazabal cgm.3 Series User Manual

IG-183-EN version 06; 31/03/2020
5
General instructions
cgm.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
Description and main characteristics
1. Description and main characteristics
The cgm.3 system is made up of a range of fully insulated
modular SF
6
cubicles, which allow the conguration of
dierent medium voltage secondary electrical distribution
diagrams up to 38 kV.
This cubicle system has been designed to meet the
requirements of the following standards:
Standard Description
CAN CSA C22.2
No.31-04
Switchgear assemblies
IEEE C37.74
IEEE Standard requirements for subsurface, vault,
and pad-mounted load-interrupter switchgear
and fused load-interrupter switchgear for
alternating current systems up to 38 kV
IEEE C37.20.3
IEEE Standard for metal-enclosed interrupter
switchgear
IEEE 1247
IEEE Standard for interrupter switches for
alternating current, rated above 1000 volts
IEEE C37.123
IEEE Guide to specications for gas-insulated,
electric power substation equipment
IEEE C37.20.4
IEEE Standard for indoor ac switches (1 kv - 38 kv)
for use in metal-enclosed switchgear
IEEE C37.04
IEEE Standard rating structure for ac high-voltage
circuit breakers
IEEE C37.06
AC high-voltage circuit breakers rated on a
symmetrical current basis: preferential ratings and
related capacities required
IEEE C37.09
IEEE Standard test procedure for ac high-voltage
circuit breakers rated on a symmetrical current
basis
IEEE C37.20.7
IEEE Guide for testing medium voltage metal-
enclosed switchgear for internal arcing faults
IEC 60529
Degrees of protection provided by enclosures
(IP Code)
IEC 62271-206/
IEC 61243-5
Voltage presence indicating systems
Table 1.1. Requirements
The cgm.3 system comprises the following functional units:
Models
cgm.3-l
Feeder cubicle
cgm.3-s
Busbar switch cubicle
cgm.3-s-pt
Busbar switch cubicle with ground connection on
the right (-ptd) or on the left (-pti)
cgm.3-p
Fuse protection cubicle
cgm.3-v
Circuit-breaker cubicle
cgm.3-rb
Busbar rise cubicle
cgm.3-rc
Cable rise cubicle
cgm.3-r2c
Double cable rise cubicle
cgm.3-m
Metering cubicle
Table 1.2. Unifunctional switchgear
Models
cgm.3-2lp
2 feeder and 1 fuse protection functions
cgm.3-2lv
2 feeder and 1 vacuum circuit breaker functions
cgm.3-rlv
1 busbar rise, 1 feeder and 1 vacuum circuit
breaker function
Table 1.3. Multifunctional switchgear

Ormazabal cgm.3 Series Specifications

General

Brand	Ormazabal
Model	cgm.3 Series
Category	Power distribution unit
Language	English