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Three-phase transformers are used to convert the available 3-phase mains voltage into any load voltage.
To cater for the wide range of application areas involved,these transformers are essentially available in
the same kinds of designs as the single-phase transformers, e.g.
Three-phase dry-type transformer:
separate winding version
Three-phase series transformer:
autotransformer winding version
Three-phase safety, isolating, mains or
insulating transformer: separate winding version
In terms of how the 3 coils are connected, there are various options available and each of these provides
the transformers with specific properties. The vector group code is composed of the following elements:
The upper-case letter indicates the higher-voltage winding
(the highest voltage in terms of operation).
The lower-case letter indicates the lower-voltage winding.
The brought-out neutral is indicated by means of N or n
(depending on voltage level).
â?¢ The distinctive number indicates the phase angle of the lower voltage
in relation to the higher voltage (distinctive number multiplied by 30).
The following winding connection options are available
Delta: D, d
Wye (or star): Y, y
Zigzag: Z, z
Example: Dyn5
Higher-voltage winding is delta-connected.
Lower-voltage winding is star-connected with a brought-out neutral.
The lower voltage lags behind the higher voltage by 150�° (5 x 30�°).
Unless specifically requested otherwise, the transformers are configured with a double-star connection
and a brought-out neutral (vector group Yyn0); for autotransformers the vector group is YNa0.
Our three-phase transformer range includes all our standardised types for the 25 30.0 kVA performance range and a frequency of 50/60 Hz

EE30 horizontal 6+6pin customer transformers.

Jiangyin Spark XH-SCT-T24 Series split-core current transformer , Diameter 24mm , Max rated current 300A ,output 0.333V ,1.0% class ,UL list


Features:
Small size, low cost
High secondary turns
Secure locking hinge
Features:
Maximum continuous primary current 5A to 300AAC
Current Ratio: 3000: 1
Output: 0.333 Volt or mA at rated current
Accuracy: �± 1% from 5% to 120% of rated current
Insulation Voltage: 600VAC
Maximum Primary Voltage: 5000VAC(Insulated Conductor)
Phase angle: Less than 2 degrees at 50% of rated current
Frequency Range: 50 Hz to 400 Hz
Operating Temperature: -15C to 60C.
Leads: 4Foot(105cm), UL 1015, Twisted Pair, 0.34 mm2(22AWG)
CE recognized, and RoHS compliant
Output and leads can be customized