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PROJECTSHOWCASE
TECK - HIGHLAND VALLEY COPPER
Highland Valley Copper is an open pit
mine operation and process plant. The
process plant uses autogenous and
semi-autogenous grinding and �otation to
produce metal in concentrate from ore.
PROJECTSHOWCASE
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SITE CONDITIONS
EQUIPMENT DESCRIPTION
CUSTOMER INFORMATION
Power factor correction, prevention of harmonic
resonance,harmonic �ltering, IEEE 519 compliance.
Primary Purpose:
Multi-tuned harmonic �lter bankEquipment Type:
13.8 kV, 60 Hertz, 95 kV BIL, 19.7 MVAR (effective)3-Phase,
4-Stage, 4-Step, 3.8th Tuned
Ratings:
South Central British Columbia, Canada
Max. Temperature: 28.3º C (82.9º F)
Min. Temperature: −37.2º C (−34.9º F)
Extreme Snow Depth: 81 cm (31.8 in)
Annual Precipitation: 217.9 mm (8.57 in)
Highland Valley Copper Mine, owned by Teck Resources
The largest open pit copper mine in Canada
DC Recti�ers, VFD’s, Cycloconverters, Inductionor Synchronous
Motors, Large Electric Shovels
Electrical Load:
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PRODUCT FEATURES
Main Incoming Disconnect Switch / Ground Switch and Fixed
Mounted Vacuum Circuit BreakerThis allows for direct connection to
mine’s main overhead bus bar. The �lter bank did not require
afeeder breaker in main switchgear.
Compartmentalized Enclosure DesignDesign consisting of 12
isolated compartments, including: control, incoming isolation /
groundswitch, PT, main incoming �xed breaker, main bus, stage
isolation / ground switch (1 per stage,4 total), and 4 stage
compartments.
Stage Isolation / Ground Switches for Each Filter StageAllows
for safe maintenance of one stage while the others remain in
operation.
Multi-Tuned Harmonic Filter ReactorsAllows for the quick and
simple conversion from a 4 stage, 3.8th tuned notch harmonic �lter
systemto a multi-tuned 4 stage, 3.8th / 5th / 7th / 7th notch tuned
harmonic �lter system.
Harmonic Overload ProtectionOn each notch tuned �lter stage.
Thermal Overload and Blown Fuse DetectionOn capacitor fuse as
well as split-wye protection on each stage.
Reinforced Base ChannelFor mounting on to pylons. Equipment also
features an enclosure �oor and externally mounted lights for
substation illumination.
SEL735, SEL751 Relay Protection System and Control System with
Arc Flash DetectionThe SEL Relay logic controls and protects
equipment and communicates with mine’s DCS system.
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Commissioned in August, 2014
Catwalk with removable handrails was installed around the
perimeter to allow for
easy access to the equipment
Heavy dust buildup at the site required Pylon mounting. This
simpli�ed cable entry,
avoiding the need to excavate theexisting ground grid
Cables were free-air rated and run on an exposed cable tray
under the gear
Struthers Tehcnical Solutions, Ltdhttp://strutherstech.com/
Engineering involvement includedidentifying the need for power
factor
correction and harmonic �ltering
Cost / Bene�t analysis for the equipment
Equipment spec, document prep, bid review, arc �ash analysis,
relay
programming, and on-site commissioning
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(518) 792 - 4776
www.nepsi.com | [email protected]
This showcase was created for you, by NEPSI.
The project showcase series is a compilation of successful
projects completed by NEPSI. For more information about our
products, call our of�ce or visit our website.
3-LINE DIAGRAM
CUSTOMERSOURCE
(3) PT
GROUNDSWITCH
ISOLATIONSWITCH
ARRESTERSURGE
CAPACITOR
CURRENTLIMITINGFUSES
AM
P
HARMONICFILTERREACTORS
VACUUMSWITCH
CONNECTEDUNGROUNDEDSPLIT-WYE
51N NEUTRAL CURRENTDETECTION
STAGE 14934 KVAR OUTPUT
BREAKER(FIXED)
13.8kV, 60Hz, 3-PH.
GROUNDSWITCH
ISOLATIONSWITCH
751
735
SEL
SEL
(3) CT
(3) CT
OL-1SATEC(3) CT
CAPACITOR
CURRENTLIMITINGFUSES
AM
P
HARMONICFILTERREACTORS
VACUUMSWITCH
CONNECTEDUNGROUNDEDSPLIT-WYE
51N NEUTRAL CURRENTDETECTION
GROUNDSWITCH
ISOLATIONSWITCH
OL-2SATEC(3) CT
CAPACITOR
CURRENTLIMITINGFUSES
AM
P
HARMONICFILTERREACTORS
VACUUMSWITCH
CONNECTEDUNGROUNDEDSPLIT-WYE
51N NEUTRAL CURRENTDETECTION
GROUNDSWITCH
ISOLATIONSWITCH
OL-3SATEC(3) CT
CAPACITOR
CURRENTLIMITINGFUSES
AM
P
HARMONICFILTERREACTORS
VACUUMSWITCH
CONNECTEDUNGROUNDEDSPLIT-WYE
51N NEUTRAL CURRENTDETECTION
GROUNDSWITCH
ISOLATIONSWITCH
OL-4SATEC(3) CT
3.8th TUNEDTAPPED AT 5.0th TUNED
STAGE 24934 KVAR OUTPUT
3.8th TUNEDTAPPED AT 5.0th TUNED
STAGE 34934 KVAR OUTPUT
3.8th TUNEDTAPPED AT 5.0th TUNED
4934 KVAR OUTPUT3.8th TUNED
TAPPED AT 5.0th TUNED
STAGE 4
REACTOR & CAPACITOR COMPARTMENTSECTION-1, STAGE-1
REACTOR & CAPACITOR COMPARTMENTSECTION-1, STAGE-2
REACTOR & CAPACITOR COMPARTMENTSECTION-2, STAGE-3
REACTOR & CAPACITOR COMPARTMENTSECTION-2, STAGE-4
LOWER INCOMING COMPARTMENTSECTION-1
PT COMPARTMENT
UPPER INCOMING COMPARTMENTSECTION-1
SWITCH COMPARTMENTSECTION-1, STAGE-1
SWITCH COMPARTMENTSECTION-1, STAGE-2
SWITCH COMPARTMENTSECTION-2, STAGE-3
SWITCH COMPARTMENTSECTION-2, STAGE-4
PHASE BUS BAR PASS THROUGHSECTION-1
PHASE BUS BAR PASS THROUGHSECTION-2
