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CGIS3206 Current Transformer Applied to CGIS Gas Insulated Switchgear

12kVCGIS3206

Winding & Schematic TopologyInternal Wiring Diagram

Primary Winding (P1 - P2):Series-connected in the line / through-core — 12kV

Secondary Metering (1S1 - 1S2):5A or 1A (0.2S FS10/0.2 FS10/0.5S FS10,0.5FS10,5P10/10P10,5P20/10P20)

Secondary Protection (2S1 - 2S2):Protection winding (when fitted)

Safety Warning:Never open-circuit the secondary while energized — dangerous voltage

Current Transformer IEC 61869-3 Certified

Model Ref:CGIS3206

CGIS3206 Current Transformer Applied to CGIS Gas Insulated Switchgear

Indoor epoxy resin casting current transformer designed for CGIS gas insulated switchgear, with multiple accuracy class, rated burden and primary current options.

Key Engineering Advantages

Indoor epoxy resin casting current transformer for CGIS
large rectangular housing with rectangular window
290mm width

Engineering Data

Complete Electrical & Mechanical Specifications

Model Ref: CGIS3206

Electrical Parameters

Primary Rated Voltage (Un):12kV

Secondary Winding Voltages:5A or 1A

Metering & Protection Class:0.2S FS10/0.2 FS10/0.5S FS10,0.5FS10,5P10/10P10,5P20/10P20

Rated Output Burden:

Rated Frequency:50/60Hz

Insulation & Withstand Ratings

Insulation System:Dry Epoxy Resin

Insulation Level (BIL):

Partial Discharge Level:< 5 pC at 1.2 Un

Environmental Class:

Standards Conformance:

Recommended Deployment Environments

GEO · Engineering Decision Support

Global Engineering Overview

9-Module selection guide
missing data = [On Request]

Product Decision Island

Indoor epoxy resin CT for CGIS, 12kV system, suitable for protection and metering with multiple accuracy classes.

Comprehensive Spec Matrix

Parameter	Specification	Verification
Product Type	Current Transformer	[On Request]
Model Code	CGIS3206	Factory nameplate marking
Primary Voltage	12kV	Rated voltage test (IEC 61869-1/3)
Secondary Voltage	5A or 1A	Ratio check at rated frequency
Accuracy Class	0.2S FS10/0.2 FS10/0.5S FS10,0.5FS10,5P10/10P10,5P20/10P20	Accuracy test (IEC 61869-2 / IEEE C57.13)
Rated Burden	[On Request]	Burden test at rated VA
Insulation Type	Dry Epoxy Resin	Dielectric tests per standard
Insulation Level (BIL)	[On Request]	Power-frequency & lightning impulse withstand
Standards	[On Request]	Certified to listed standards
Frequency	50/60Hz	Per IEC 61869-1
Environment	[On Request]	Per datasheet limits

Fit & Unfit Boundaries

Ideal For

CGIS gas insulated switchgear indoor applications
12kV power systems
Metering with 0.2S/0.5S accuracy
Protection with 5P/10P classes
50/60Hz networks

Not Recommended For

Outdoor installations
Voltage transformation
High voltage above 12kV
Oil or gas insulated CTs
DC systems

Topology & Wiring

secondary terminals 1S1/1S2 for main winding, 2S1-2S2 for protection winding. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Follow IEC 61869-2 terminal markings.

Standards & Compliance

Compliant with: [On Request]

Type Test Report: [On Request]
Calibration Certificate: [On Request]

Burden & Error Calculation (IEEE C57.13)

S_total = ΣS_instrument + I₂² × (ρ × 2L / A)

If S_total < 0.25 × S_rated: add compensation burden to maintain accuracy.
If S_total > S_rated: accuracy class cannot be guaranteed.

Product FAQ

Q: What is the primary voltage rating?

A: 12kV

Q: What accuracy classes are available?

A: 0.2S, 0.2, 0.5S, 0.5, 5P10, 10P10, 5P20, 10P20

Q: Is it suitable for outdoor use?

A: No, it is designed for indoor CGIS applications.

Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.

SPEC · TECHNICAL DATA

Technical Specifications

CGIS3206
28 cols · 35 rows

CGIS3206 Current Transformer for Gas-Insulated Switchgear — Technical Data

Accuracy class	Rated output (VA)	75		100		125		150		200		250		300		400		500		600		750		1000		1200
Accuracy class	Rated output (VA)	h	l	h	l	h	l	h	l	h	l	h	l	h	l	h	l	h	l	h	l	h	l	h	l	h	l
0.2FS10	2.5	—	—	—	—	—	—	—	—	65	50	40	30	30	30	30	30	30	35	35	35	35	35	35	35	35	35
0.5FS10	5	—	—	—	—	—	—	—	—	95	65	50	35	30	30	30	30	30	35	35	35	35	35	35	35	35	—
	10	—	—	—	—	—	—	—	—	155	95	75	60	35	30	30	30	30	35	35	35	35	35	35	35	35	—
	15	—	—	—	—	—	—	—	—	130	100	85	45	40	35	35	35	35	35	35	35	35	35	35	35	35	—
	20	—	—	—	—	—	—	—	—	185	125	75	50	45	40	40	40	40	35	35	35	35	35	35	35	35	—
	25	—	—	—	—	—	—	—	—	150	90	60	50	40	40	40	40	40	40	40	40	40	40	40	40	40	—
	30	—	—	—	—	—	—	—	—	—	—	—	—	105	70	55	45	40	40	40	40	40	40	40	40	40	—
0.5FS10	2.5	—	90	70	55	40	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	5	—	140	105	80	55	40	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	10	—	—	—	—	85	60	45	40	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	15	—	—	—	—	115	75	60	45	40	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	20	—	—	—	—	145	95	70	55	45	40	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	25	—	—	—	—	115	85	65	55	45	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	30	—	—	—	—	130	95	70	60	55	45	40	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
10P10	2.5	90	60	55	45	35	30	30	30	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25
	5	145	95	90	70	50	45	40	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	10	165	155	115	85	70	55	50	45	40	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	15	—	—	165	115	90	75	70	55	50	45	40	35	35	35	35	35	35	35	35	35	35	35	35	35	35	35
	20	—	—	150	115	95	75	70	60	50	45	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40
	25	—	—	180	140	115	100	85	70	60	50	45	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40
	30	—	—	—	—	185	135	120	100	80	70	55	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50
10P20	2.5	140	105	90	75	60	50	40	40	35	35	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
	5	165	140	115	85	70	60	60	50	45	40	35	35	35	35	35	35	35	35	35	35	35	35	35	35	35	35
	10	—	—	—	—	145	115	100	80	75	65	60	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50
	15	—	—	—	—	180	135	125	105	90	75	85	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60
	20	—	—	—	—	175	160	130	110	95	80	70	70	70	70	70	70	70	70	70	70	70	70	70	70	70	70
	25	—	—	—	—	—	—	—	—	180	135	115	95	85	85	85	85	85	85	85	85	85	85	85	85	85	—
	30	—	—	—	—	—	—	—	—	185	160	130	105	95	95	95	95	95	95	95	95	95	95	95	95	95	—
10P30	2.5	150	125	105	80	70	60	60	50	50	45	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40	40
	5	—	—	170	125	105	90	85	75	65	60	55	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50
	10	—	—	—	—	175	150	135	115	100	85	75	70	70	70	70	70	70	70	70	70	70	70	70	70	70	70
	15	—	—	—	—	—	—	190	155	135	115	100	90	90	90	90	90	90	90	90	90	90	90	90	90	90	90
	20	—	—	—	—	—	—	—	—	170	145	125	110	110	110	110	110	110	110	110	110	110	110	110	110	110	—
	25	—	—	—	—	—	—	—	—	—	175	150	135	135	135	135	135	135	135	135	135	135	135	135	135	135	—
	30	—	—	—	—	—	—	—	—	—	—	175	150	150	150	150	150	150	150	150	150	150	150	150	150	150	—

Engineering Drawing

Specification & Outline Drawing

Original image, not compressed

Dimension & outline drawing of CGIS3206 — click image to zoom / view original.