LZZBJ9-12A1(A2) current transformer, epoxy resin casting insulation and fully enclosed support construction, encloses primary & secondary windings and annular core in the epoxy resin casting body. The product has the feature of light weight, omni-directional installation, withstanding nastiness and dampness. It is widely used for measuring current, electric energy and protective relaying in the electrical system with the rated frequency 50- 60Hz and highest voltage for equipment 7.2 kV /12 kV .
Main technical parameter
1. Rated voltage: 6.6 kV or 11 kV etc.
2.Rated secondary current: 5A?1A
3.Rated insulation level: 7.2/20/60 kV or 12/28/75 kV
4.Standards: IEC60044-1.2003 Part 1: Instrument transformers-Part1: Current transformers
5.Other technical parameter pls see as follows
Rated
transformation ratio(A)
Accuracy classes combination
Rated output(VA)
(ALF)
(FS)
Short-time thermal current Ith(kA/S)
Rated dynamic current Idyn(kA)
Measuring
Protective
0.2(S)
0.5
10P
10-200/5
0.2(S)/0.2(S)
0.2(S)/0.5
0.2(S)/10P
0.5/10P
0.2S/0.5/10P
0.2/0.5/10P
10
15
15
15
10
15
20
5
(10)
150I1n
375I1n
300/5
31.5
80
400/5
31.5
80
500/5
40
100
600/5
50
125
800/5
20
63
125
1000/5
80
160
1200~1500/5
80
160
1500~2000/5
100
160
2000~3150/5
130
160
Rated
transformation ratio(A)
Accuracy classes combination
Rated output(VA)
(ALF)
(FS)
Short-time thermal current Ith(kA/S)
Rated dynamic current Idyn(kA)
Measuring
Protective
0.2(S)
0.5
10P
10-200/5
0.2S//0.5/ 10P
0.5/0.5/10P
10
15
15
15
20
10
15
5
(10)
150I1n
375I1n
300/5
31.5
80
400/5
31.5
80
500/5
40
100
600/5
50
125
800/5
63
125
1000/5
80
160
1200~1500/5
80
160
1500~2000/5
100
160
2000~3150/5
130
160
Remarks: Upon request we are glad to offer transformers according to other standards or with non-standard technical specs.
Standards IEC60044-1; IEC 61869-2; ANSI C57.13; NTC 2205; GB1208-2006 Rated primary current 30-1000A Rated load 20VA Rated frequency 50Hz or 60Hz Rated secondary current 5A or 1A Rated short-time thermal current 40kA, 1S Rated continuous thermal current 120%I1n Secondary winding power-frequency voltage 3kV, 1min Instrument security factor FS 10 Mechanical parameters Dimensions (WDH) (mm) 45x120x65 Weight (kg) 2.1 Operating conditions Operating temperature -35C to +55C Daily average temp
Resin cast current transformers are available for metering and protection application. These current transformers are mainly fabricated according to client’s specification. Ct coils are encapsulated in cast resin (polyester / epoxy). Secondary terminals are provided with either screws or studs. The main insulation between primary and secondary and earth is obtained by this epoxy resin. These transformers are of compact design with high mechanical and electrical properties. These are non-hygroscopic and hence give very good insulation properties even in given humid conditions. General particulars Rated voltage: 11 kv Rated primary current: 100 a Rated secondary current: 1a or 5a Rate burden: 5va Rated frequency: 50hz Accuracy class: 0.5 or 0.5s Temperature: as per is-2705/1992 Highest system voltage: 12kv Insulation level: 28kvrms/75kv(p) Stc: 13.1ka for 1 sec Continues thermal current: 1.2 times of rated current Core material: crgo Copper wire material: enameled wire as per is-4800 part-4 or iec-317 Insulation class/material: epoxy resin Secondary terminal: m5 brass bolt with nut &washer or m5 threaded bush with screw &washer Primary terminal p1 & p2 size and material Mounting base: ms 5mm thick zinc plated Rountine test :as per is-2705/1992
These Current Transformers are manufactured in Wound Primary type and Window type construction. It is manufactured using Automatic Pressure Gelation casting and Vacuum Casting Technique. It ranges from 3.3 kV to 33 kV.
These Current Transformers are manufactured in Wound Primary type and Window type construction. It is manufactured using Automatic Pressure Gelation casting and Vacuum Casting Technique. It ranges from 3.3 kV to 33 kV.
Supplier: Instrument transformers 11kv upto 33kv, current transformers, and potential transformers, and CT PT combined units
Services: FOB or CIF
Buyer: Transformers oil, epoxy resin and transformers core ring and rectangular both, and insulation paper, copper wire
JDZX10-12 voltage transformer, epoxy resin casting and single pole insulated VT, is widely used indoor for measuring current, electric energy and protective relaying in the isolated neutral system with the frequency 50-60Hz and highest voltage for equipment 12 kV. Usage Terms J: Voltage transformer D: Single-phase Z: Casting insulation X: Residual voltage winding 10: Design No. 12: Rated voltage Main technical parameter 1. Rated primary voltage:11/kV or 10/kV etc. 2. Rated secondary voltage:100/V?110/V ? 115/V? 120/V 3. Rated voltage of residual voltage windings:100/ 3V ?110/ 3V? 115/ 3V? 120/ 3V 4. Burden power factor: cosF=0.8(lagging) 5. Standards: IEC60044-2.2003 Instrument transformers-Part2: Inductive Voltage transformers Other technical parameters pls see as follow: x1204.png Remarks: Upon request we are glad to offer transformers according to other standards or with non-standard technical specs.
Product description Transformer Standard current transformer are also called precision current transformers, current transformer standards, standard CT and current transformer standards. Transformer standards are divided into current transformer standards and voltage transformer standards. Standard current transformers are used in the error test of transformers. Used as a current transformer calibration standard technical parameter Temperature -5 40 Relative humidity 80% Rated Primary Current 5-5000A 5A,1A Rated secondary current 5A 1A Accuracy Class 0.05S Allow long-term work under the rated current; More than120A across the core. Precautions The current of standard CT and tested CT must be the same in CT calibration. Follow the given wiring diagram strictly. Test whether the load box is accurate or not before calibrating the transformer. Forbid secondary winding opening during the calibration. Select demagnetization before calibration.The wiring diagram is shown in figure 5. Short out the secondary winding before cutting off the power when the demagnetization is finished. Principle wiring diagram of CT with large current generator is similar to above diagram. They are the same except the output winding of large current generator and primary winding of transformer are the same one.
Current transformer.
We are one of the leading manufacturer of all types cts of any ratio. We manufacture both outdoor and indoor types. We manufacture both resin cast & oil cooled cts As per mutual discussion
