Multi-tap Current and Voltage Transformer Analyser

Multi-tap Current and Voltage Transformer Analyser – Overview

The CVA500 combines automated test execution, one-time connection for multi-tap CTs, standard-compliant measurements, and an intuitive 10.1-inch touchscreen interface to help technicians perform tests faster and with greater confidence. From CT saturation and knee point testing up to 2 kV to turns ratio, polarity, winding resistance, insulation resistance, burden testing, and accuracy class assessment, the CVA500 provides advanced functionality for a wide range of instrument transformer testing applications. This analyser is suitable for utilities, service companies, and laboratories that need reliable CT, VT, and CVT testing capabilities in a professional and cost-effective solution.

Multi-tap Current and Voltage Transformer Analyser – Features

Burden testing for CTs, VTs, and CVTs
CT demagnetisation, saturation curve, and knee point
CT ratio and phase errors across multiple burdens and currents
CT composite error, FS (Instrument Security Factor), and ALF (Accuracy Limit Factor)
Secondary terminal voltage (Vb)
Turns ratio, polarity, and phase angle for VTs, and CVTs
Winding resistance and insulation resistance for CTs, VTs, and CVTs

Description

Multi-tap Current and Voltage Transformer Analyser | CVA500

Mains Power Supply

Connection: according to IEC/EN60320-1; UL498, CSA 22.2

Input voltage: 90 – 264 V AC

Input frequency: 50 or 60 Hz

Output AC Source

Up to 2000 V AC (Ratio and saturation test)

1 A or 5 A AC (CT burden test)

Up to 120 V AC (VT/CVT burden test)

Output DC Source

500 V or 1000 V DC (Insulation resistance test)

Up to 5 A DC (Winding resistance test)

Turns Ratio

Measurement range: 0.8 – 20000

Resolution: 5 digits

Typical accuracy:

0.8 – 2 000: ±0.02%

2 000 – 5 000: ±0.03%

5 000 – 20 000: ±0.05%

Phase Angle

Measurement range: 0 – 360º

Resolution: 0.01º

Typical accuracy: ±0.05º

Saturation (Knee Point)

Voltage measurement range: 0 – 2100 V

Resolution: 0.1 V

Typical accuracy:

±0.05% @ ≥ 5 V

±0.5% @ < 5 V

Current measurement range: 0 – 1 A / 10 A

Resolution:

0.1 mA @ < 1 A

1 mA @ ≥ 1 A

Typical accuracy: ±(0.05% rdg +0.05% FS)

Winding Resistance (CT, VT, CVT Secondary)

Measurement range: 0 – 999.9 Ω

Resolution: 4 digits

Typical accuracy: ±(0.2% rdg + 2 mΩ)

Winding Resistance (VT Primary)

Measurement range: 0 – 99.99 kΩ

Resolution: 4 digits

Typical accuracy: ±(0.2% rdg + 2 Ω)

Insulation Resistance

Measurement range: 0 – 20 GΩ

Range/resolution:

0 – 99.99 MΩ 0.01 MΩ

100.0 – 999.9 MΩ 0.1 MΩ

1000 – 20000 MΩ 1 MΩ

Typical accuracy:

±(3% rdg + 0.2 per GΩ) @ 1000 V DC

±(3% rdg + 0.4 per GΩ) @ 500 V DC

Burden (CT)

Voltage measurement range: 0 – 45 V

Resolution: 0.001 V

Typical accuracy:

±0.05% @ ≥ 5 V

±0.5% @ < 5 V

Current measurement range: 0 – 1 A / 7 A

Resolution: 0.001 A

Typical accuracy: ±(0.05% rdg +0.05% FS)

Burden (VT, CVT)

Voltage measurement range: 0 – 300 V

Resolution: 0.001 V

Typical accuracy:

±0.05% @ ≥ 5 V

±0.5% @ < 5 V

Current measurement range: 0 – 1 A / 7 A

Resolution: 0.01 mA

Typical accuracy: ±(0.05% rdg +0.05% FS)

Display

10.1” graphical touch screen display

PC Interface

USB

Ethernet

Internal Memory

SD card 32 GB

Environmental Conditions

Operating temperature:

-20 ºC – +55 ºC

Storage & transportation:

-40 ºC – +70ºC

Humidity:

0% – 95% relative humidity, noncondensing

Dimensions and Weight

Dimensions (W x H x D):

505 x 257 x 409 mm

Weight:

20.5 kg

Warranty

3 years + additional 1 year upon registration on DV Power official website

Printer

Built-in thermal printer

Paper width 112 mm

Operating temperature:

-10 ºC – +60 ºC

Storage temperature:

-20 °C – +70 °C

Humidity:

10% – 85% relative humidity, non-condensing

Applicable Standards

Installation/Overvoltage category: II

Pollution degree: 2

Safety: LVD 2014/35/EU (CE Conform)

Standard EN 61010-1:2010

EMC: Directive 2014/30/EU (CE Conform)

Standard EN 61326-1:2013

Multi-tap Current and Voltage Transformer Analyser | CVA500

Brand

DV Power

IBEKO Power AB, with headquarters in Stockholm (Sweden) and best known through the brand ”DV Power”, has developed radically light and ingenious test solutions for transformers, circuit breakers, and batteries. Founded by a group of engineers with deep knowledge and experience in the power electronics technology area. Sold worldwide – in over 100 countries. Their success is solely based on extensive research, development, and fast commercial application.

Multi-tap Current and Voltage Transformer Analyser | CVA500

Multi-tap Current and Voltage Transformer Analyser | CVA500