Prod Model: |
GWTA 21A11 |
Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
Coil Number: |
Autotransformer |
RoHS Compliant: CE-Approved: |
Power Rating: 0.6va |
Rated Load: |
1, 2.5, 5.0, 10, 30va; |
Rated Secondary: |
Ma or 0.333-3.53VAC |
Rated Primary Current: |
100-300AAC |
Frequency: |
50/60Hz |
Operating Voltage: |
600VAC |
Shell Material: |
PBT or ABS |
Rated System Voltage: |
380V AC |
Leads: |
UL 1015, Twisted Pair, 0.34 Mm2(22aw |
Application: |
Audio |
Phase: |
Single |
Coil: |
Core-type Transformer |
Cooling Method: |
Dry-type Transformer |
Winding Type: |
Separated Winding Transformer |
Brand: |
Grewin |
Product Description


Features: Low cost
More than 50 standard sizes
Non-symmetrical mounting pattern
Toroidal Silicon steel and Nickel Alloy cores
available
Applications: For applications that require exceptional
accuracy with minimal phase angle error
Applications would include Current, Power
and Energy monitoring devices.
Specifications: Exterior Material: PBT Resin UL flame
retardant rating 94-V0
Interior Insulation: Epoxy Encapsulated
Isolation Current: 2500 Vrms for 1 minute
Dielectric Resistance: 1000 M Ohms @ 500 Vdc
Surge Withstand: 5000V(1.2/50μs standard
shock wave)optional
Operating Temperature:-25 to +55ºC,-40 to
+85ºC optional
Frequency: 50 to 400 Hz
Accuracy Class: as defined in IEC 60044-1
Part 1 Current Transformers Class 0.1,0.2
RoHS Compliant
CE-approved
Items per Carton:100 Pieces / Carton Package Measurements:370X265X265 CM
Gross Weight:10.00 KG
Package Size per Unit:0X0X0 CM
Gross Weight per Unit:0.00 KG / Piece
Package Type:standard carton2.The following is our detailed information of our single turn primary miniature current transformer rated input 5 to 100A econd burden <1000 turn ratio1000:1 for measurement:
Single Turn Primary Mini Current Transformer(features) |
Low cost |
More than 50 standard sizes |
Non-symmetrical mounting pattern |
Toroidal Silicon steel and Nickel Alloy available |
Single Turn Primary Mini Current Transformer(applications) |
For applications that require exceptional accuracy with minimal phase angle error |
Applications would include Voltage,power and energy monitoring devices |
Single Turn Primary Mini Current Transformer(specifications) |
Exterior Material | PBT Resin UL flame retardant rating 94-V0 |
Interior Insulation | Epoxy Encapsulated |
Isolation Voltage | 2500 Vrms for 1 minute |
Dielectric Resistance | 1000 M Ohms @ 500 Vdc |
Surge Withstand | 5000V(1.2/50μs standard shock wave)optional |
Rated Load Resistance | 100K Ohms |
Operating Temperature | -25 to +55ºC,-40 to +85ºCoptional |
Frequency | 50 to 400 Hz |
Accuracy Class | defined in IEC 60044-1 Part 1 Voltage Transformers Class 0.1 0.2 |
Certification | RoHS Compliant CE Approved |
Single turn primary mini current transformer for measurement:
Photograph | Part Number | Rated (max) input current (A) | Ratio | Frequency (Hz) | Secondary Burden Resistance (Ohms) | Accuracy Class | Outline Dimensions (mm) | Output Mold |
| GWTA2011 | 5(20) 5(50) 10(40) 15(60) | 1000:1 1500:1 2000:1 | 50-400 | ≤40 | 0.1 0.2 | ID-L-W-H 8.0 26.0-13.5-28.6 | lead |
| GWTA21A11 | 5(20) 5(50) 10(40) 15(60) | 1000:1 2000:1 2500:1 | 50-400 | ≤40 | 0.1 0.2 | ID-L-W-H 6.7 23.5-11.5-25.0 | lead/ pin |
| GWTA21B11 | 5(20) 5(50) 10(40) 15(60) | 1000:1 2000:1 2500:1 | 50-400 | ≤40 | 0.1 0.2 | ID-L-W-H 6.7 23.5-11.5-25.0 |
| GWTA22B11 | 5(20) 5(50) 10(40) 20(80) | 1000:1 2000:1 2500:1 | 50-400 | ≤50 | 0.1 0.2 | ID-L-W-H 8.7 26.0-17.5-27.5 |
| GWTA22D11 | 5(50) 10(40) 10(60) 20(80) | 1000:1 2000:1 2500:1 | 50-400 | ≤50 | 0.1 0.2 | ID-L-W-H 8.0 19.5-18.5-30.0 |
| GWTA22E11 | 5(50) 10(60) 10(100) 20(120) | 1000:1 2000:1 2500:1 | 50-400 | ≤50 | 0.1 0.2 | ID-L-W-H 12.8 36.7-14.2-38.5 |
| GWTA2411 | 5(50) 10(40) 20(80) 20(100) | 1000:1 2000:1 2500:1 | 50-400 | ≤50 | 0.1 0.2 | ID-L-W-H 9.0 41.0-18.5-30.0 |
| GWTA24B11 | 5(20) 5(50) 10(40) 15(60) | 1000:1 1500:1 2000:1 | 50-400 | ≤40 | 0.1 0.2 | ID-L-W-H 6.0 41.0-15.0-28.0 | lead |
| GWTA3611 | 10(60) 15(60) 10(100) 20(80) | 500:1 1000:1 2000:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 32.0-30.0-30.0 |
| GWTA36A11 | 1.5(6) | 150:1 250:1 300:1 1000:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 32.0-30.0-34.0 |
| GWTA36B11 | 1.5(6) | 150:1 250:1 300:1 1000:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 28.0-30.0-32.0 |
| GWTA20DA11 | 5(20) 5(50) 10(40) 15(60) | 1000:1 1500:1 2000:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 38.0-15.0-29.0 |
| GWTA20EA11 | 5(20) 5(50) 10(40) 15(60) | 1000:1 1500:1 2000:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 45.0-28.0-29.0 |
| GWTA3711 | 1.5(6) | 150:1 250:1 300:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 85.0-31.0-33.0 | lead |
| GWTA3811 | 1.5(6) | 150:1 250:1 300:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 98.0-23.0-33.0 |
| GWTA38C11 | 1.5(6) | 150:1 250:1 300:1 | 50-400 | ≤40 | 0.1 0.2 | L-W-H 96.0-23.0-28.0 |

Exstra certifications:
current transformer: safer, easier installation, and portable
Applications.
We have abtained VDE,UL,CE,ROHS,ISO9000 Approal and SGS Audit Supplier in China,We guarantee quality is the first:
GREWIN MINI PRECISION CURRENT RANSFORMER Aditions:
1,The printing circuitiy board is direct-jionting fixed,design is reasonable.;
2,Small bulk,high precision;whole occlude,The machinery and bears the environment performance to be good,strong ability in closing off the pressure and on the safe side..Using terms:
1,Environment temperature:-40°C~+85°C;
2,Relative humidity:when temperature is 40°C ≤90%.
Working frequency bound:20Hz~20KHz.
WHY CHOOSE US? |
Quality and honest first! |
A. Flexible service for diffierent transformers with high efficiency performance. |
B. Over 40 years experience of transformer designing and producing. |
C. 100% test of every single product we produce from incoming material checking. |
D. UL, CE, ISO9001:2008 |
E. We offer custom-made transformers, OEM and ODM are welcome |
F. We deliver the quality you expect at consistently competitive prices |
G. Transformer quality lifetime:10 Years. |
H. Specialty Sales service:5 -10 Years |
GREWIN has various kinds of state-of-the-art equipment, which are used in production, sampling and testing. Our equipments enable us to produce good quality products efficiently.
The following picture showed you about all finished current transformer in the warehouse which is waiting for packing into boxes:
We can pack all the finished transformers into export standard cartons with strong pallets so that can make sure the goods reach safety to your destination place.

Victor Dong
Tianjin Grewin Technology Co.,Ltd.
Web: http://grewin-tech.en.made-in-china.com or www.grewin-tech.com
TEL:86-22-84943756
FAX:86-22-85909471
MT: 86-13820617229
GREWIN as manufacture for Toroidal Transformer, current transformer, high frequency magnetics transformer, split core current sensor, clamp on CT, EI power Transformer etc. We have abtained ISO9001: 2015, IEC, CE, VDE, approval.
Our company have many advantages which can be your honesty and reliable supplier:
WHY CHOOSE US?
A. Business philosophy "Quality and Honesty First“
B. Over 40 years experience of transformer designing and producing.
C. Transformer 100% test before the shipment;
D. UL, CE, ISO9001: 2008
E. We offer custom-made transformers, OEM and ODM are welcome
F. We expect at consistently competitive prices
G. Transformer quality lifetime: 10 Years.
H. Professional experiences of the sales and engineers: 5 -10 Years
Grewin Mission: Growing together side by side, Mutual success hand in hand.
We sincerely invite you to join us to create a bright future.
Contact Information:
Tianjin Grewin Technology Co., Ltd.
TEL: +86 22 84943756
Web: www.grewin-tech.com