KPM-CT/PT Analyzer C+

KPM-CT/PT Analyzer C+
The ultimate instrument transformer analyzer — engineered for customers who demand precision and seek to validate ratio using the primary current method. Performs a complete series of standard tests quickly and accurately.
IEC 61869ANSI/IEEE C57.13.1TheIEC60044-6
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Compatible Instrument Transformer Types
The KPM-CT/PT Analyzer C+ is designed to work across the full spectrum of transformer applications — from low-tension metering to extra-high-voltage switchyards.
CVT
Capacitive Voltage Transformers for high-voltage measurement
Bus Duct CT
Current transformers integrated within bus duct assemblies
EHV S/S CT
Extra-high-voltage substation current transformers
Metering Box CT
Compact metering box current transformers
LT-CT
Low-tension current transformers for distribution networks
Bushing CT
Current transformers mounted within transformer bushings
Key Advantages
Low Testing Time
Completes all basic tests for CT winding and cores in just a few minutes — maximizing field productivity.
Simple Connection
Single one-time connection setup eliminates complexity and reduces operator error on-site.
Highest Accuracy
0.02% typical and 0.05% guaranteed for turns ratio error — industry-leading measurement precision.
Portable & Lightweight
Weighing less than 14 KG, it is easy to transport and deploy across multiple field sites.
High Interference Rejection
Can be safely used in live 220 / 400 / 765 KV switchyards with robust noise immunity.
Real-Time Display
Live measurement display enables on-the-spot analysis and immediate decision-making in the field.
Optional Multi-Tap Testing: Test all the ratios of a secondary winding in one go — saving significant time on complex transformer configurations.
Connection Methods
The KPM-CT/PT Analyzer C+ supports two industry-standard connection methods, giving engineers the flexibility to choose the most appropriate approach for each test scenario.
Secondary Voltage Ratio Method
The standard connection approach for rapid, non-invasive testing of current and potential transformers directly from the secondary terminals. Ideal for in-service and routine testing environments.
Fast and straightforward terminal connection
Suitable for all CT winding and core tests
Minimal disruption to existing wiring
Preferred method for routine field inspections
Primary Current Injection Method
Validates transformer ratio using actual primary current injection — the gold standard for accuracy verification and compliance testing. Designed for customers who demand the highest level of measurement confidence.
10A Primary Current Injection — built-in source, ready to use out of the box
200A Primary Current Injection — optional upgrade for high-burden and large-ratio transformers
Confirms ratio accuracy under realistic operating conditions
Meets stringent utility and metering compliance requirements
Both methods are fully supported within a single instrument, eliminating the need for multiple test sets on-site.

Instrument Highlights
A compact 13 kg unit with a complete measurement function set. The KPM-CT/PT Analyzer C+ tests all types of current and potential transformers with a comprehensive suite of built-in capabilities.
1
Excitation Curve & Parameters
Full magnetization characteristic and saturation behavior (ALF/FS) measurement with graphical output.
2
Turns Ratio Test
Precise turns ratio determination with industry-leading 0.02% typical accuracy.
3
Ratio & Phase Error
Simultaneous ratio and phase angle error measurement for metering and protection class CTs.
4
Polarity Mark Check
Automatic polarity verification to confirm correct winding orientation and terminal marking.
5
Coil Resistance Measurement
DC winding resistance measurement for condition assessment and thermal analysis.
6
Secondary Loop Burden
Accurate secondary loop burden measurement to verify connected load compliance.
Error Line Curve Test
Protection CT error line curve testing for relay coordination and protection grading studies.
Transient CT Parameters
Transient performance parameter testing per IEC 61869 for class TPX, TPY, and TPZ transformers.
CT Nameplate Guess
Intelligent nameplate parameter estimation from measured data — useful for unmarked or legacy transformers.
Saturation Hysteresis Loop
Full saturation hysteresis loop curve measurement for remanence and core loss characterization.
Complete Test Coverage
The KPM-CT/PT Analyzer C+ delivers end-to-end test coverage for both current transformers and voltage transformers — all from a single portable instrument.
Current Transformer — Primary Method
Primary Injection Tests
Ratio validation using real primary current for the highest confidence in measurement results:
Turns Ratio — 10A
Built-in 10A source for standard primary current injection ratio testing, ready to use without additional equipment.
Turns Ratio — Up to 200A
Optional 200A primary injection capability for large-ratio, high-burden, and utility-grade current transformers.
Voltage Transformer Tests
VT / PT Test Suite
Comprehensive voltage transformer testing covering all critical parameters required by international standards:
Ratio Test
Accurate voltage transformation ratio measurement across all taps and windings.
Polarity Test
Verification of winding polarity and terminal marking for correct protection and metering connections.
Secondary Burden Test
Measurement of connected secondary burden to ensure compliance with rated burden limits.
Winding Resistance Test
DC resistance measurement of primary and secondary windings for condition monitoring.
The KPM-CT/PT Analyzer C+ is compliant with IEC60044-1, IEC60044-6, IEC 61869, and ANSI/IEEE C57.13.1 — ensuring your test results meet global utility and metering standards.
13kg
Compact Weight
Fully portable for field deployment
0.02%
Typical Accuracy
Turns ratio error — industry leading
200A
Max Primary Injection
Optional high-current source
765KV
Live Switchyard Rating
Safe use in energized substations