10KV Instrument Current Transformer , Medium Voltage Transformer Casting Insullation

Basic Information

Place of Origin:	BEIJING CHINA
Brand Name:	GFUVE
Certification:	CE, UL, KEMA, ISO9001
Model Number:	LZZW-10Q

Minimum Order Quantity:	3PCS
Price:	1800-2500USD/PC
Packaging Details:	Standard Export Wooden Box
Delivery Time:	2-3weeks
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	5000PCS/MONTH

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Name:	Instrument Transformer	Application:	10KV Line
Function:	Current Measurement	Theory:	Electromagnetic
Usage:	Full Opeartion Mode	Class:	0.2s, 0.5, 5P10, 5P20
Burden:	10-100VA	Surface Creepage Distance:	460mm
Standard:	IEC61869, IEC60044	Weight:	23Kg
High Light:	current potential transformer , power potential transformer

10KV Medium Voltage Casting insullation current instrument transformer

Theory

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.
Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.
Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.
Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Applications

The LZZW-10Q outdoor current instrument transformers are fully enclosed and cast in epoxy resin. Instrument transformer is equipped with one core and coil assembly rated for measurement and protection, and then output multi ratio. The current transformers are designed for electric power systems of 50Hz/60Hz rated frequency and 35kV rated voltage. They are used for outdoor mounting. The performances of the products meet standards IEC60044-1, IEC61869-2 and ANSI/IEEE C57.13. The products are applied to metering electric energy, voltage controlling and relay protection.

1. Measurement current & voltage for energy meter and power meter

2. Supply protection current signal for microcomputer protection relay set

Features

New magnetic material is taken to be the core of the current instrument transformer, which has high magnetic permeability, low saturation magnetization and good stability. Therefore, the measuring accuracy is higher and the instrument security factor is lower. Since the high quality silicon processed by advanced technology is taken to be the core of the protection windings, which assured the accuracy limit factor is higher.
The semicircular ring core and secondary windings are vacuum poured by high quality epoxide resin in the fire retardant plastic casing, which has the characteristic of moisture proof, stable performance and dispensing with maintenance.Small size, light weight, small footprint, fixed in the ring network switchgear cable.The cable can cross the current transformer through its internal poles quickly and uniformly.
The Cast Resin Straight-Through Current Transformer can be divided several kinds according to the various current ratio, accuracy and rated loads. The specific parameters are showed in the corresponding to each model parameter tables.

High precision 0.2s

Designed for 30years lifes

Good Stability in 33kv power line

Big burden.

Multi ratio CT

PARAMETERS

Rated primary current (A)	Ith/ls (KA r.m.s.)	Idyn (KA peak)	Accuracy class combination	Rated secondary output(VA)					Surface creepage distance (mm)	Wt (KG)
				0.2(S) 0.5S	0.5	5P10	5P15	5P20
20-40	4	10	0.2(S)/5p 0.5(S)/5p	10	15	20	15	10	460	23
30-60	6	15
40-75	7.5	18.8
50-100	10	25
75-150	15	37.5
100-200	20	50
150-300	30	75
200-400	40	100
300-600	60	130
400-800	80	160
500-1000
600-1200	100	160
750-1500

ORDERING INFORMATION

Be sure to the type, current ratio, accuracy class, rated load and use of the products when you plan to make a order. Special specifications could be customized.All kinds of different specifications and parameters current transformers can be made according to your needs.

Front View of Resin Split Core Current Transformer,doule ratio

P1, P2 is primary polarity terminal, S1, S2 is secondary polarity terminal.
P2, S2 is homonymous terminals (subtractive polarity).

Tag:

10KV Instrument Current Transformer , Medium Voltage Transformer Casting Insullation

current potential transformer

power potential transformer

ORDERING INFORMATION

electromagnetic potential transformer,

current potential transformer,

power potential transformer

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