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Hitachi Industrial Components & Equipment

SP Series

Top-runner Energy Saving Type


The performance of energy saving is more than top-runner standard value

The example of three phases 1,000kVA equivalent load factor 50% (ratio of our company)

comparison graph

*Top-runner system (Definition)

The top-runner system provides higher efficiency based on existing products with excellent with excellent efficiency and in view of prospects in technical development.

Significant decrease of emission of carbon dioxide

Significant decrease of emission of carbon dioxide

The energy saving effect is greatly different based on the load factor

For Super Amorphous X Series, because of the low no-load loss and extremely low standby Power requirement, the high energy saving effect that suitable for the reality is demonstrated.

The current state of transformer load factor

1 Year AverageEquivalent
Load Factor (%)
Power Ratio(%)
Weighted Average
Load Factor in Contracted
Power Ratio (%)
Day time Night time 1 Day Day time Night time 1 Day
210 47.3 32.2 16.7 40 40.8 24.1 33.6
80 35.9 40.5 28.0 60

Reasons for super energy saving and highly effectiveness

Amorphous is exceptional material

The merit of amorphous is applied to the core of transformers.

The merit of amorphous is applied to the core of transformers. The amorphous is a non-crystal substance created by rapidly freezing liquids of high temperature. Because there is no rule of atomic arrangement, the energy loss (hysteresis loss) is little when the flux of magnetic induction passes the iron core. Moreover, eddy current loss is decreased because the thickness is approximately 0.03 mm which is about 1/10 comparing with silicon steel . Therefore, the no-load loss (eddy current loss and hysteresis loss) can be decreased to about 1/5 compared with silicon steel.

Concept of Amorphous


About the loss of transformers

The load loss and no-load loss occur at the same time when the transformer is operated, the loss is a useless output chiefly converted into heat.

Load loss (Copper loss)

The loss occurs because of the flow of load current when loaded and it is in proportion to the second power of size of load.

No-load loss (Iron loss)

The constant loss that always occurs when in the state of receiving power regardless whether loaded or not.

Hysteresis loss
According to the change of direction and size of the flux magnetic induction in the iron core, the direction and arrangement of magnetic molecule changes, and friction loss is generated between molecules (magnet protected power).
Eddy current loss
The electromotive force is caused in the iron core because of the flux change, and it is a result of the flow of current, and the resistance loss occurs.

Environmental-friendly transformers

Recycling concept of amorphous

Recycling concept of amorphous


No. of
Frequency Voltage Specification Connection Standard
6kV Standard Model 200V class
Three 300, 500 50 or 60
F6,750-R6,600-F6,450-F6,300-6,150 210 star-delta connections JEC 2200-1995
JEM 1482-2005
750, 1,000 delta-delta connections
6kV Standard Model 400V class
Three 1,500, 2,000 50 F6,750-R6,600-F6,450-F6,300-6,150 420-242 delta-star connections

(The second
side with
neutral point)

JEC 2200-1995
JEM 1482-2005
1,500, 2,000 60 440-254
The numerical values of the voltage and the rating capacity, etc. of the specification table are Japanese specifications.
Please ask us about the specifications for foreign countries.

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