9
III. Technical Parameters,Specifications and Selection
and Matching
The capacity of the control box is nominated as the capacity of the voltage regulator
and the voltage regulator. If it works with the test transformer (working system within 30
minutes in a short time), it can be matched according to the provisions of the power
industry standard of the People's Republic of China "DL474.4-92": P=0.75P. P-test
transformer capacity and P-regulator capacity. If it is used for batch test of electrical
equipment factory products, the capacity of voltage regulator should be equal to the
capacity of test transformer, that is,P
0
=P.
The technical parameters of the control box are shown in Table 1.
1. Rated capacity
:
10kVA
2. Input voltage
:
220V
3. Input current
:
45.5A
4. Output voltage
:
0-250V
5. Weight
:
30kg
6. Dimensions
:
400X320X390
(
mm
)
IV. Operational Guidelines
Before operation, the maximum working current should be calculated and the current
protector should be adjusted according to the capacity and voltage level of different
subjects. The test wiring should refer to Figure 1 of this specification or the related
connection schematic diagram of the test transformer, and the grounding end should be
well grounded (as shown in the following voltage withstand test for example).
1. Connect the power supply (box type is socket type power supply, desk type is
connection pole type power supply), and auto-buck voltage regulator to zero position, zero
switch closed, zero position indicator light (red light) on (also known as zero output state
indicator of voltage regulator);
2. Press the start button (green), the contactor is sucked in, the voltage regulator is
electrified, and the working indicator (green light) is on.
3. When the main circuit starts to supply electricity, press the boost button to rotate the