Function
A) Overvoltage - undervoltage
H
Umax
L1
Umin
Umax
L2
Umin
Umax
L3
Umin
RESET
t1
t2
t1
15-18
t1
t2
25-28
LED U
B) Phase sequence
100%
L1
0%
100%
L2
L3
0%
100%
L3
L2
0%
RESET
t1
15-18
(25-28)
t1
LED
C) Asymmetry - phase failure
100%
L1
0%
100%
L2
0%
100%
L3
0%
100%
0%
H
RESET
t1
t2
t1
t2
15-18
(25-28)
LED
Warning
The device is constructed to be connected into 3-phase main and must be installed in accordance with regulations and norms applicable in a particular country. Installation,
connection and setting can be done only by a person with an adequate electro-technical qualifi cation which has read and understood this instruction manual and product functions.
The device contains protections against over-voltage peaks and disturbing elements in the supply main. Too ensure correct function of these protection elements it is necessary to
front-end other protective elements of higher degree (A, B, C) and screening of disturbances of switched devices (contactors, motors, inductive load etc.) as it is stated in a standard.
Before you start with installation, make sure that the device is not energized and that the main switch is OFF. Do not install the device to the sources of excessive electromagnetic
disturbances. By correct installation, ensure good air circulation so the maximal allowed operational temperature is not exceeded in case of permanent operation and higher
ambient temperature. While installing the device use screwdriver width approx. 2 mm. Keep in mind that this device is fully electronic while installing. Correct function of the device
is also depended on transportation, storing and handling. In case you notice any signs of damage, deformation, malfunction or missing piece, do not install this device and claim it
at the seller. After operational life treat the product as electronic waste.
cos φ ≥ 0.95
Type of load
AC1
Mat. contacts AgNi,
contact 16A
250V / 16A
Type of load
AC13
Mat. contacts AgNi,
contact 16A
250V / 6A
H
t2
t1
t1
MEMORY - ON (DIP-2)
L3
L2
L2
L3
t1
t1
MEMORY - ON (DIP-2)
t1
t1
t2
t1
t2
MEMORY - ON (DIP-2)
M
M
AC2
AC3
250V / 5A
250V / 3A
K
AC14
AC15
250V / 6A
250V / 6A
Relay is designated to monitor 3-phase circuits. Type HRN-43N controls voltage
against neutral wire, type HRN-43 controls interphase voltage. Relay can
monitor voltage in two levels (overvoltage / undervoltage), phase assymetry,
sequence and failure. Each faulty state is indicated by individual LED. By DIP
switch (Output) it is possible to defi ne function of the other relay - independayt
function (1x for overvoltage, 1x for undervoltage) or in parallel. Time delays t1
(fi xed) - when changing from faulty to normal state or when de-energized and
t2 (adjustable) when changing from normal to faulty state. These delays prevent
incorrect conduct and oscillation of output device during short voltage peaks in
the main or during gradual voltage decline into normal.
Voltage control
Set upper level Umax in range 138-276 V (or 240-480 V for HRN-43) and lower
level Umin in range 35-99% Umax. In case any phase passes this range, after
a delay which eliminated short voltage peaks, contact breaks. output contact
again switches after returning back into monitored voltage range and exceeding
fi xed hysteresis (which is adjustable in two values by DIP switch). In case of failure
of two or three phases, the relay is deactivated immediately regardless of the
set delay t2.
Phase sequence
Monitors correctness of phase sequence. In case of unwanted change output
contact breaks. In case of energization of a device with incorrect phase sequence,
contact stays open.
Asymmetry
Rate of assymetry between individual phases is set in a range of 5-20%. In case
L2
set asymmetry is exceeded, output relay breaks and LED indicating asymmetry
shines. Delays t1, t2 and hysteretic are applicable when returning to normal state.
L3
Monitoring asymmetry can be switched off by DIP switch ASYM.
t1
L1, L2, L3
RESET
t1
t2
15-18
25-28
LED U
LED
LED
H
MEMORY - ON
A) Overvoltage - undervoltage
Selection of 2nd relay function: In order to monitor 2 levels of voltage, it is
possible to select if output relay responds to each level individually (see the
diagram) or both relays switch in parallel way (see diagram "phase sequence").
Selection via DIP switch Output.
t2
t1
B) Phase sequence
Selection of 2nd relay function: The function is not implied when monitoring
phase sequence, the relays are switched in parallel way. DIP switch Output is
ignored.
C) Asymmetry - phase failure
Selection of 2nd relay function: The function is not implied when monitoring
phase sequence, the relays are switched in parallel way. DIP switch Output is
ignored.
AC5a
AC5a
uncompensated
compensated
x
230V / 3A (690VA)
M
DC1
DC3
24V / 16A
24V / 6A
2 / 2
- 3-phase voltage
- press of the button on frontal panel
- time delay, fi xed
- time delay, adjustable
- output relay 1
- output relay 2
- adjustable asymmetry
- indication overvoltage / undervoltage
- indication of phase sequence
- asymmetry indicator
- hysteresis
HAL.230V
AC5b
AC6a
800W
x
M
DC5
DC12
24V / 4A
24V / 16A
AC7b
AC12
250V / 3A
250V / 10A
DC13
DC14
24V / 2A
24V / 2A