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E20KV Outdoor Electromagnetic Instrument Potential Transformer Poxy Resin Cast
E20KV Outdoor Electromagnetic Instrument Potential Transformer Poxy Resin Cast
Specifications
Brand Name :
GFUVE
Model Number :
LZZW-20Q
Certification :
CE, UL, KEMA, ISO9001
Place of Origin :
BEIJING CHINA
MOQ :
3PCS
Price :
1800-2500USD/PC
Payment Terms :
L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :
5000PCS/MONTH
Delivery Time :
2-3weeks
Packaging Details :
Standard Export Wooden Box
Name :
instrument transformer
Application :
outdoor 20KV power line
Function :
Current measurement
Theory :
electromagnetic
Color :
red
Class :
0.2S 0.5s
Burden :
20-100VA
Ratio :
10-2000A/5A
Surface creepage distance (mm) :
660mm
Weight :
43KG
Description

Epoxy Resin Cast 20KV Medium Voltage Outdoor 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 LZZQ-20 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 20 kv power line

Big burden.


PARAMETERS

T

Rated
primary
current(A)		 Accuracy
class combination		 Rated secondary output(VA) Surface creepage distance
(mm)		 Weight
(KG)
1S/2S 0.2S 0.5S 0.2 0.5 5P10 5P15 5P20
15-400 0.2(S)/0.2(S)
0.2(S)/0.5(S)
0.5(S)/0.5(S)
0.2(S)/5P
0.5(S)/5P		 20 30 30 60 40 20 660 43
500 75 50 30
600-1000 80 60 40
1200-1500 40 100 75 50

Product tags

cast resin current transformer

,

high frequency welding pvc

,

ansi transformer bushing insulators
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E20KV Outdoor Electromagnetic Instrument Potential Transformer Poxy Resin Cast

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Product Detail
Brand Name :
GFUVE
Model Number :
LZZW-20Q
Certification :
CE, UL, KEMA, ISO9001
Place of Origin :
BEIJING CHINA
MOQ :
3PCS
Price :
1800-2500USD/PC
Contact Supplier
E20KV Outdoor Electromagnetic Instrument Potential Transformer Poxy Resin Cast

Beijing GFUVE Instrument Transformer Manufacturer Co.,Ltd.

Active Member
8 Years
beijing, beijing
Since 2008
Business Type :
Manufacturer
Main Products :
Zero Sequence Current Transformer, Split Core Current Transformer, Instrument Current Transformer
Total Annual :
$100,000,000-$150,000,000
Employee Number :
300~350
Certification Level :
Active Member
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