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CGIS2010 Current Transformer Applied to CGIS Gas Insulated Switchgear

35kVCGIS2010

Winding & Schematic TopologyInternal Wiring Diagram

Primary Winding (P1 - P2):Series-connected in the line / through-core — 35kV

Secondary Metering (1S1 - 1S2): ()

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:CGIS2010

CGIS2010 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
chamfered square housing with Ø105mm inner window

Engineering Data

Complete Electrical & Mechanical Specifications

Model Ref: CGIS2010

Electrical Parameters

Primary Rated Voltage (Un):35kV

Secondary Winding Voltages:

Metering & Protection Class:

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 cast CT for CGIS, rated 35kV, 50/60Hz. Suitable for metering and protection in gas-insulated switchgear.

Comprehensive Spec Matrix

Parameter	Specification	Verification
Product Type	Current Transformer	[On Request]
Model Code	CGIS2010	Factory nameplate marking
Primary Voltage	35kV	Rated voltage test (IEC 61869-1/3)
Secondary Voltage	[On Request]	Ratio check at rated frequency
Accuracy Class	[On Request]	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

35kV indoor gas-insulated switchgear (CGIS) applications
Current measurement and protection in 50/60Hz networks
Epoxy resin insulated environments requiring compact CT design
Integration with Ø105mm busbar or cable window

Not Recommended For

Outdoor installations without additional weatherproofing
Voltage transformation or potential indication
Systems above 35kV or below 35kV without adaptation
DC or non-sinusoidal AC applications

Topology & Wiring

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

A: Dry epoxy resin casting.

Q: What is the primary voltage rating?

A: 35kV.

Q: What is the frequency range?

A: 50/60Hz.

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

CGIS2010
18 cols · 20 rows

CGIS2010 Current Transformer for Gas-Insulated Switchgear — Technical Data

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

Engineering Drawing

Specification & Outline Drawing

Original image, not compressed

Dimension & outline drawing of CGIS2010 — click image to zoom / view original.