8.3. Regulator bypass mode operation
Alarm that the device is in Bypass (Transit) mode. The voltage at
the input and output of the regulator has the same value.
To switch on this mode, the transit switch (to the left of the indi-
cator) must be in the upper position.
Attention!
The Bypass (Transit) mode can be
switched on / off only when the regulator is switched off.
If you try to do this while the regulator is running (in Reg-
ulation mode or in Bypass mode (Transit)), the input cir-
cuit breaker will shut off to avoid accidental activation/
deactivation of the Bypass mode
Such actions are important for long-term operation
of the cut-out unit.
Attention!
By activating the Bypass mode, you leave
the equipment without regulation and protection of the
QUANT regulator, because it is connected directly to the
grid, which can be dangerous for the equipment in the
event of power surges.
9. Quant regulator built-in protections
• The regulator contains the built-in protection against pulse
overvoltages according to DSTU on quality of voltage in elec-
tric grids - microsecond 1/50 and 16/700, ie against indirect
lightning strikes and, most importantly, from switching over-
voltages. In addition, it is guaranteed that neither one nor the
other affect the load, if they do not exceed the stiffness level 4
according to DSTU (protection against switching overvoltag-
es is made with a margin greater than the maximum stiffness
category according to DSTU, taking into account the realities
of our grids - for a current of 300A instead of 100A in a pulse,
and for a duration of up to 30000ms instead of the allowable
minimum of 700ms).
• The regulator protects against the instantaneous supply of
voltages up to 420-450V, for example, in the case of neutral
wire disruption or phase to ground fault in the grid, keeping
the voltage safe for 20-50 milliseconds, and only then turns
off the input circuit breaker (if such spikes are short-term,
without interruption of operation, the voltage at the load re-
mains nominal, without any spikes or surges).
• The protection does not contain wearing parts, unlike tradi-
tional FPS, and can be used in production environments with
one power line as the powerful machines, giving large over-
voltages to the mains when switching (or transformer electric
welding machines, which give such pulses every time an arc
is broken or an attempt to ignite the arc is made), even if thou-
sands of such dangerous surges pass during the day.
22
BYPASS ON! XXXV
Min
=
xxxV Max
=
xxx
QUANT-7
Automatic voltage regulator, one-phase
