TND(SVC)-3000VA High-precision single-phase AC voltage regulator
for measuring equipment
TND (SVC) series single-phase high accuracy full automatic AC
voltage regulator is one of the leading products of our company.
Their structure is composed of the contact type auto-former
regulator, servo electric motor, automatic control circuit and so
on. When the electrical network voltage is unstable or the load is
changed, it will automatically sampling control circuit and send
out the signal to drive servo electric motor, adjust the carbon
brush position of auto-former regulator so as to make the output
voltage to be the rated value and be the steady state.
There are lots of merits of our company's voltage regulator such as
various varieties, complete specification, and beautiful
appearance. And it also has characteristics of started waveform,
reliable performance, long-term movement and so on, and it is
equipped with the time delay, over-voltage, and under voltage
protection function and can widely be used in many electricity
place, is one kind of ideal voltage-stabilized source that can keep
your equipment on.
Single-phase 220V or 110V
Regulated voltage precision
220V±3% or 110V±3%
<1s (input voltage changes at 10%)
Does not have the attachment waveform distortion
Load power factor
♦ Principle of work
This product mainly composes of contact voltage regulator,
sampling, comparison, enlargement control loop, implement servo
motor and so on, the entire electric circuit constituted the closed
When the input voltage and load are changing, carries on the
sampling by the sample electric circuit to the output voltage,
carries on the comparison and enlargement with the setting
reference. The output signal control servo motor drives voltage
regulator carbon brush tumbler rotation, thus adjust the rated
voltage value of output voltage setting to guarantee the stable
The Main Principle sees following Figure:
Type and specification
Product size (cm)
TND-1 "(vertical type)
♦ Operating Instruction
First take out the whole machine from the packing case, good take
care of the spare parts, and read (Operation Instruction Manual)
Put this machine indoor dry and ventilating place, insert the power
source plug or connect the line according to this machine marking,
after inspect that there is no mistake, and open the power switch
of the machine, this machine works, then, observe whether the
output voltmeter instructs as the corrective instruction 220V,
then, turn on the using electrical equipment.
When input voltage or load are changing, the inside machine
servomotor will automatically rotate to adjust the output voltage.
The running sound sent out is the normal phenomenon. After using,
close the electrical equipment power switch first, and then close
the power switch of voltage regulator. Please do not take the power
switch of voltage regulator using as the switch of all equipment.
It should inspect whether in complete before starting.
When this voltage regulator is used in the place with general low
electrical network voltage, it must pay attention to the using
available capacity to be supposed to reduce according to the
proportion, its relations sees the following Figure.
Not allow to surpass time (minute)