Home Products Current TransformerCGIS2806

CGIS2806 Current Transformer Applied to CGIS Gas Insulated Switchgear

12kVCGIS2806

Winding & Schematic TopologyInternal Wiring Diagram

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

Secondary Metering (1S1 - 1S2):5A or 1A (0.2FS10/0.5SFS10,0.5,5P10/10P10,5P20/10P20,5P30/10P30)

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:CGIS2806

CGIS2806 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
rectangular housing with rectangular window
250mm width

Engineering Data

Complete Electrical & Mechanical Specifications

Model Ref: CGIS2806

Electrical Parameters

Primary Rated Voltage (Un):12kV

Secondary Winding Voltages:5A or 1A

Metering & Protection Class:0.2FS10/0.5SFS10,0.5,5P10/10P10,5P20/10P20,5P30/10P30

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 CT for CGIS at 12kV; multiple accuracy classes for metering and protection.

Comprehensive Spec Matrix

Parameter	Specification	Verification
Product Type	Current Transformer	[On Request]
Model Code	CGIS2806	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	0.2FS10/0.5SFS10,0.5,5P10/10P10,5P20/10P20,5P30/10P30	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

12kV gas-insulated switchgear (CGIS) indoor applications
Metering with accuracy class 0.2 or 0.5S
Protection with class 5P/10P up to 30 ALF
50/60Hz systems

Not Recommended For

Outdoor installations
Voltage transformation
Non-gas-insulated switchgear
Systems above 12kV

Topology & Wiring

connect primary through window; secondary terminals 1S1/1S2 for metering, 2S1/2S2 for protection. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary circuit at one point only.

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: 0.2FS10, 0.5SFS10, 0.5, 5P10/10P10, 5P20/10P20, 5P30/10P30.

Q: What is the secondary current rating?

A: 5A or 1A.

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

CGIS2806
16 cols · 35 rows

CGIS2806 Current Transformer for Gas-Insulated Switchgear — Technical Data

Accuracy class	Rated output (VA)	75(h)	75(h)	100(h)	125(h)	150(h)	200(h)	250(h)	300(h)	400(h)	500(h)	600(h)	750(h)	1000(h)	1200(h)
0.2F510	2.5	—	—	—	—	—	65	50	40	30	30	30	30	35	35
0.2F510	5	—	—	—	—	—	95	665	50	35	30	30	30	35	35
0.2F510	10	—	—	—	—	—	155	95	75	50	35	30	30	35	35
0.2F510	15	—	—	—	—	—	130	100	65	45	40	35	35	35	35
0.2F510	20	—	—	—	—	—	185	125	75	50	45	40	40	40	35
0.2F510	25	—	—	—	—	—	—	150	90	60	50	40	40	40	40
0.2F510	30	—	—	—	—	—	—	—	105	70	55	45	45	45	40
0.5F510	2.5	—	90	70	55	40	35	30	30	30	30	20	25	25	—
0.5F510	5	—	140	105	80	55	40	35	30	30	30	20	25	25	—
0.5F510	10	—	—	—	85	60	45	40	35	30	25	25	25	25	—
0.5F510	15	—	—	—	115	75	60	45	40	35	30	25	25	25	—
0.5F510	20	—	—	—	145	95	70	55	45	40	30	30	30	25	—
0.5F510	25	—	—	—	—	115	85	65	55	45	35	30	30	30	—
0.5F510	30	—	—	—	—	150	95	70	60	55	40	30	30	30	—
10P10	2.5	—	90	60	55	45	35	30	25	25	25	20	20	20	—
10P10	5	145	95	90	70	50	45	40	35	30	30	25	25	25	—
10P10	10	—	165	155	115	85	70	55	50	45	40	35	30	30	—
10P10	15	—	—	165	115	90	75	70	55	50	45	35	35	30	—
10P10	20	—	—	150	115	95	85	70	60	50	45	40	35	35	—
10P10	25	—	—	180	140	115	100	85	70	60	50	45	40	35	—
10P10	30	—	—	—	165	135	120	100	80	70	70	55	50	40	—
10P20	2.5	140	105	90	75	60	50	40	35	35	30	30	30	30	—
10P20	5	—	165	140	115	85	70	60	50	45	40	40	35	35	—
10P20	10	—	—	—	145	115	100	90	75	65	60	50	50	40	—
10P20	15	—	—	—	—	160	135	125	105	90	75	65	60	50	—
10P20	20	—	—	—	—	175	160	130	110	95	80	70	65	60	—
10P20	25	—	—	—	—	—	—	160	135	115	95	85	75	70	—
10P20	30	—	—	—	—	—	—	185	160	130	110	95	85	75	—
10P30	2.5	—	150	125	105	80	70	60	55	45	45	40	40	40	—
10P30	5	—	—	170	125	105	90	85	75	65	60	55	50	50	—
10P30	10	—	—	—	175	150	135	115	100	85	75	70	60	55	—
10P30	15	—	—	—	—	190	155	135	115	100	85	75	70	60	—
10P30	20	—	—	—	—	—	170	145	125	110	95	85	75	70	—
10P30	25	—	—	—	—	—	—	175	150	130	115	100	90	80	—
10P30	30	—	—	—	—	—	—	—	—	175	150	130	115	100	—

Engineering Drawing

Specification & Outline Drawing

Original image, not compressed

Dimension & outline drawing of CGIS2806 — click image to zoom / view original.