Introduction
The EI57 transformer is mainly used for industrial water level measurement equipment. It supplies power for relay of the equipment and can output four groups of working voltages at the same time under the mode of two input voltage. Since the equipment has high requirements on the accuracy of the working voltage and requires a sufficient safety distance from the primary and secondary, a split BOBBIN is used to process the primary and secondary windings respectively. When the transformer receives a control command, it can accurately drive relay to work.
Parameters
| ITEMS |
TEST PIN |
SPECIFICATION |
|
P（1-3） |
100/200V 50/60Hz |
| AC 100V Output Voltage |
S1(4-5)
S2(6-7)
S3(8-9)
S4(10-11) |
AC21.5V±3%
AC21.5V±3%
AC21.5V±3%
AC8.5V±3% |
| S1(4-5)
S2(6-7)
S3(8-9)
S4(10-11) |
AC20.0V±3%
AC20.0V±3%
AC19.9V±3%
AC8.1V±3% |
| AC 200V Output Voltage |
S1(4-5)
S2(6-7)
S3(8-9)
S4(10-11) |
AC21.7V±3%
AC21.7V±3%
AC21.7V±3%
AC8.6V±3% |
| S1(4-5)
S2(6-7)
S3(8-9)
S4(10-11) |
AC20.2V±3%
AC20.1V±3%
AC20.1V±3%
AC8.2V±3% |
|
P(1-3) |
Below 20mA |
|
P(1-3) |
Below 2.5W |
|
P(1-3) |
Below 30mA |
|
PRI-SEC
PRI-CORE |
AC 2.0KV/1min |
| SEC-SEC
SEC-CORE |
AC 0.5KV/1min |
|
PRI-SEC
PRI SEC-CORE |
DC 500V |
Dimensions:（Unit: mm）& Diagram
Features
1. Two-stage BOBBIN design
2. Reinforced metal frame
3. Jump wire as input and output terminals
4. Reinforced internal leads prevents poor connection caused by accidental stress
Advantages
1. The split BOBBIN structure enhances voltage safety between the primary and secondary and provide bigger room for winding;
2. Heavy weight and thickened frame with ribs ensures a better stability after installation and provides better shock resistance;
3. Lead structure is flexible for installation and wiring so the installation won' t be affected by light changes of base.
4. Multi-channel output voltage with high precision keeps equipment from malfunction
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