TYPE VAP TRADITION - MANUFACTURING INSTRUMENT TRANSFORMERS SINCE 1947

Application
COMBINED TRANSFORMER The combined instrument transformer essentially consists of two measur-
FLEXIBLE DESIGN - READINESS AND WILLINGNESS TO COMPLY WITH CUSTOMER REQUIREMENTS

ing units: the inductive voltage transformer and the current transformer. LONGEVITY AND RELIABILITY - DESIGNED FOR AT LEAST 50 YEARS OF SERVICE LIFE
72,5 to 550 kV Combined instrument transformers are used to step-down current and
voltage to defined values, and thus provide standardized, useable levels
of current and voltage in a variety of metering, protection and auto-
mation applications while insulating the measurement and protection
equipment from high system voltage.

Performance Main Features

• In: up to 6000 A • High-precision measurement accuracy and protection classes with
• Short circuit: up to 100 kA superior transient response
(Idyn: 250 kA peak) • Maintaining of designated accuracy class during entire transformer
• Secondary cores: up to 10 lifetime
• Secondary windings: up to 6 • Insulating medium - non-toxic, inert and non-flammable SF6 gas
• All metering and protection classes • Internal shields provide an optimal axial electric field distribution
• Explosion proof design ensured by means of a rupture disc
• Low SF6 leakage rate of less than 0,5% per year
• Standard ambient temperatures from -35 to +40 °C (extreme ranges
upon request)
CURRENT TRANSFORMER • High quality composite (silicone shed) or porcelain insulator
• Extensive experience with seismically demanding design
• Top core design - ensuring low
• Non-corrosive hardware
primary winding losses
• Maintenance free
• Primary and/or secondary
• Space and cost savings
transformation ratio selection
• Low leakage reactance Accessories
• Densimeter for gas pressure monitoring
• Reliable internal overpressure indicator as an online monitoring
VOLTAGE TRANSFORMER
system (optional)
• High thermal burden - up to 2500 VA with • Fuses or micro circuit breakers (MCB) for secondary winding
standard design, higher ratings on demand protection (optional)
• High voltage winding designed • Revenue metering secondary terminals can be sealed separately
for optimal performance • Transport shock indicators (optional)

Standard Dimensions

Type Maximum Total Total SF6 Base Minimal

System Height Weight Weight Mounting Creepage High Voltage SF 6
Voltage Distance
kV mm kg kg mm mm INSULATED INSTRUMENT
VAP-72,5 72,5 2500 410 10 500 x 500 1815
VAP-123 123 2700 420 10 500 x 500 3075 TRANSFORMERS
VAP-145 145 2900 440 11 500 x 500 3625 for Outdoor Installation
VAP-170 170 3200 490 13 500 x 500 4250
VAP-245 245 4650 970 30 650 x 650 6125 The given indicative values refer to our standard
composite insulator versions and vary depending
VAP-300 300 4850 1020 35 650 x 650 7500
on electrical, mechanical and environmental param-
VAP-362 362 5600 1350 55 750 x 750 9050
eters specified in the customers’ inquiry. The values
VAP-420 420 6550 1670 70 900 x 900 10500
are susceptible to change in the course of technical
VAP-550 550 7500 1900 85 900 x 900 13750 developments.

KON»AR - Instrument transformers Inc.

P.O. Box 202
HR-10002 Zagreb, Croatia
phone: +385 1 379 4112 Končar - Instrument Transformers Inc.
fax: +385 1 379 4040
e mail: info@koncar-mjt.hr www.koncar-mjt.hr
TYPE VPP TYPE AGP
Application Application
VOLTAGE TRANSFORMER Voltage transformers are used to step-down high voltage to defined CURRENT TRANSFORMER Current instrument transformers are used to step-down current to de-
values, and thus provide standardized, useable levels of voltage in fined values, and thus provide standardized, useable levels of current

72,5 to 550 kV a variety of metering, protection and automation applications while

insulating the measurement and protection equipment from high sys-
72,5 to 800 kV in a variety of metering, protection and automation applications while
insulating the measurement and protection equipment from high sys-
tem voltage. tem voltage.

DESIGN Main Features & Performance Performance Main Features

• Up to 6 secondary windings • In: up to 6000 A • Top core design - ensuring low primary winding losses
Our SF6 insulated instrument transform- • Primary and/or secondary transformation ratio selection
• High-precision measurement accuracy and protection classes with • Short circuit: up to 100 kA
ers are designed to fit our customers’ superior transient response (Idyn: 250 kA peak) • Low leakage reactance
needs and requests, which makes them • Maintaining of designated accuracy class during entire transformer lifetime • Secondary cores: up to 10 • Insulating medium - non-toxic, inert and non-flammable SF6 gas
a tailor-made product from design stage • Insulating medium - non-toxic, inert and non-flammable SF6 gas • All metering and protection classes • Internal shields provide an optimal axial electric field distribution
• High voltage winding designed for optimal performance • Explosion proof design ensured by means of a rupture disc
onwards. Modern design methods in-
• Internal shields provide an optimal axial electric field distribution • Low SF6 leakage rate of less than 0,5% per year
cluding Finite Element Analysis are • Explosion proof design ensured by means of a rupture disc • Standard ambient temperatures from -35 to +40 °C (extreme ranges
incorporated into the design process to • Low SF6 leakage rate of less than 0,5% per year upon request)
ensure swift and accurate calculation • High thermal burden - up to 2500 VA in standard design, higher • High quality composite (silicone shed) or porcelain insulator
ratings possible • Extensive experience with seismically demanding design
of design parameters and an immediate
• Standard ambient temperatures from -35 to +40 °C (extreme • Non-corrosive hardware
in-house development, when needed. • Maintenance free
temperature ranges upon request)
The same philosophy is extended into • High quality composite (silicone shed) or porcelain insulator
Accessories
every production stage. Quality ma- • Extensive experience with seismically demanding design
• Non-corrosive hardware • Densimeter for gas pressure monitoring
terials, such as steel and light alloys,
• Maintenance free • Reliable internal overpressure indicator as an online monitoring
as well as high strength composite or system (optional)
porcelain insulators are used, while all Accessories • Revenue metering secondary terminals can be sealed separately
in-factory processes are thoroughly con- • Densimeter for gas pressure monitoring • Transport shock indicators (optional)
trolled and transformers are subdued to • Reliable internal overpressure indicator as an online monitoring
several interphase checks before reach- system (optional)
• Fuses or micro circuit breakers (MCB) for secondary winding
ing final routine testing.
protection (optional)
• Revenue metering secondary terminals can be sealed separately
Standard Dimensions
• Transport shock indicators (optional)
Standard Dimensions
Type Maximum Total Terminal Total SF6 Base Minimal
Type Maximum Total Total SF6 Base Minimal System Height Height Weight Weight Mounting Creepage
System Height Weight Weight Mounting Creepage Voltage Distance
Voltage Distance kV mm mm kg kg mm mm
kV mm kg kg mm mm AGP-72,5 72,5 2050 1815 290 5,5 500 x 500 1815
VPP-72,5 72,5 2170 245 5 500 x 500 1815 AGP-123 123 2250 2015 310 6,5 500 x 500 3075
VPP-123 123 2370 260 6,5 500 x 500 3075 AGP-145 145 2450 2215 340 7,5 500 x 500 3625
VPP-145 145 2570 290 7 500 x 500 3625 AGP-170 170 2550 2315 360 9 500 x 500 4250 The given indicative values refer to
VPP-170 170 2670 350 8,5 500 x 500 4250 AGP-245 245 3200 2800 590 10 650 x 650 6125 our standard composite insulator ver-
VPP-245 245 3750 715 20 500 x 500 6125 The given indicative values refer to our standard AGP-300 300 3400 3000 630 12 650 x 650 7500 sions and vary depending on electri-
composite insulator versions and vary depending cal, mechanical and environmental
VPP-300 300 3900 745 22 500 x 500 7500 AGP-362 362 4600 4250 910 25 750 x 750 9050
on electrical, mechanical and environmental param- parameters specified in the customers’
VPP-362 362 4750 930 30 700 x 700 9050 AGP-420 420 5450 4750 1170 50 900x900 10500
eters specified in the customers’ inquiry. The values inquiry. The values are susceptible to
VPP-420 420 5400 1050 40 700 x 700 10500 AGP-550 550 6250 5630 1290 60 900x900 13750
are susceptible to change in the course of technical change in the course of technical de-
VPP-550 550 6400 1450 60 700 x 700 13750 developments. AGP-800 800 8500 7900 1850 110 900x900 20000 velopments.

Quality Assurance
Končar instrument transformers are designed in compliance with IEC, ANSI/IEEE, GOST, AS, IS, CAN/CSA, or any other relevant standard.
Product quality is assured through a certified quality standard, the ISO 9001, covering all aspects of design, production and testing.
Končar - Instrument transformers Inc. is ISO 14001 and OHSAS 18001 certified, ensuring environmental and occupational health standards are met.
And most importantly, our tireless ambition to satisfy customers has sealed long lasting quality and reliability onto our product.