SVC(TNS) 9kVA 30kVA three phase servo AC Automatic voltage
TNS series high accuracy full automatic three-phase AC
voltage-stabilized source is composed of TND (SVC) series high
accuracy automatic voltage-stabilized source; the three-phase phase
splitting adjustment guarantee various phase voltages stably and
safely; If the electrical network input is the three-phase
four-wire system, star shape (Y shape) connection, the output may
use the three-phase four-wire system or the three-phase three-wire
system, separately indicates each output current by three ampere
meters, monitor each output line voltage by a changeover switch and
9kVA and below specification TNS series high accuracy automatic
three phase AC voltage regulator is composed of three corresponding
specifications single-phase automatic voltage stabilized source,
30kVA and above specification TNS series high accuracy automatic
three phase AC voltage regulator adopts compensation
♦ Installation and Usage
Turn on the voltage regulator packing case, take out the Operation
Instruction Manual and the spare parts, read this (Operation
Instruction Manual)) carefully, and well keep it. Take out the body
of the voltage regulator, reliably put in dry and ventilating
place, press the door lock button by hand, the gate will
Wiring as per the instruction and marks on the connecting block:
Facing the terminal, the above three ones marked as the letter of
"A", "B", "C" respectively is three-phase input phase line, the
under three one marked as the letter of "a" "b" "c" respectively is
threephase output phase line, the terminal marked "N" "N
respectively is input and output common using median line.
Selection of input, output line: 1.5kVA~4.5kVA:1mm2; 6kVA~9kVA:2mm2; 15kVA:4mm2; 20kVA~30kVA: 10mm2.
After inspection wiring unmistakable, push the handle of C45
circuit breaker on faceplate to the "ON" position, the voltage
regulator immediately come on working adjustment condition, the
working indicating lamp is bright. Gyrates multi-purpose
change-over switch on the faceplate, observe whether various
voltage meter instructed is normal or not, after determined
unmistakable, then puts through the electric appliance which you
use. Overvoltage protection value 430V, when the output line
voltage is higher than 430V,voltage regulator automatically cut
Numbers of phase
<1 second (Input voltage changes at 10% )
Does not have the attachment waveform distortion
Type and specification
Output power (kVA)
Product size (cm)
♦ Debugging Guide
The three-phase voltage regulator actually Is composed of
combination three single-phase voltage regulators, It Is ok to
connect their zero lines (N) together as common zero line (N).
Debugs, may debug single-phase separately: Inputs the single-phase
voltage from AO, by now, the voltage regulator at most above one
phase started to run, and carbon brush acts, pressed down the AC
contactor to make it close and test the correspondence voltage,
adjust 1R12 (1RP1) potentiometer on A-phase control panel, cause
Van as 220V; and then BN and CN phase separately (according to the
similar method). After finishing debugging three-phase separately
that mean the entire debugging have been completed, then input from
A, B, C, N three-phase electricity, output, automatically output
380V line voltage.
Debugging overvoltage and under voltage protective value is
supposed to the above method, respectively debug each single-phase
protection value (generally is 250V/190V) adjust 2RP1/2RP2
potentiometer. Thus, when three-phase input, protective value will
be 430V/330V automatically.
♦ Matters for Attention
Strictly prohibits being exposed to the sun and rain.
Prohibits using under the environment of caustic gas (for example
lampblack, steam and so on).
Attention for Earthing outer covering.
If you discovered the voltage regulator has the unusual smell or
belches smoke phenomenon in the use, please immediately push the
handle of C45 circuit breaker on faceplate to "OFF" position, break
the power source, then, dismantle the connected line and deliver
the whole machine to the company service department.
When purchasing this machine, please consider its load capacity
(Following Figure) and the actual total capacity of your each kind
of electric appliance used. It should leave full load allowance.
This voltage regulator input terminal must use three-phase
four-wire system, only then may be normal work; The out-terminal
may use three-phase three-wire system or three-phase four-wire
system according to the actual need. This voltage regulator cannot
be used in parallel connection.
Overhaul and Service method
1. Failed to start
The input phase line connection is unreliable
Rewiring and inspect whether there is broken line place
have the input voltage
Survey whether the input
wiring column has or
not voltage with voltmeter.
2. Some phase no voltage instruction
The corresponding phase terminal wiring is unreliable
Inspects the condition of connection this wiring column
With the avonmeter ohm class measure whether the fuse burns out or
3. After starting various phase voltages are not balanced, too high
and too low phenomenon
The input voltage is not normal
Inspect whether the electrical network is normal
output line connect
Checkup wiring and correct
The input median line has not connected or the wiring is unreliable
Well connect the median line
Various phase voltages of the electrical network surpass its
voltage regulator scope
Inspecting the electrical network, it must off the machine load and
electricmotor that have high requirement ofthree-phase equilibrium.
4. On faceplate the voltmeter instructed various voltage is
The load is
Adjust each phase load, guarantee various phase equilibrium as far