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ELKO EP, s.r.o.
Palackého 493
769 01 Holešov, Všetuly
Czech Republic
Tel.: +420 573 514 211
e-mail: elko@elkoep.com
www.elkoep.com
Made in Czech Republic
02-10/2017 Rev.: 2
Characteristics
• it serves to monitor voltage in a switchboard, protection of devices in 3-phase main
• it monitors value of voltage in 3-phase main
• relay doesn't monitor phase sequence
• it is possible to set upper and lower level independently
• adjustable time delay eliminated short voltage peaks and failures in the main
• the device is supplied from monitored voltage
• faulty state is indicated by red LED and by breaking output relay contact
• output contact 1x changeover / SPDT 8 A / 250 V AC1
• in case supply voltage falls below 60 % Un (U
breaks with no delay
• HRN-57: supply from all phases, means that relay is functional also in case of
failure in one phase
• HRN-57N: supply L1, L2, L3-N, means that relay monitors also failure of neutral wire
• 1-MODULE, DIN rail mounting
Description
1. Supply / monitoring terminals
1
2. Indication
3. Supply indication
3
2
4. Adjusting upper value Umax
5. Adjusting of time delay T2
4
6. Adjusting bottom value Umin
5
7. Output contact
6
7
cos φ ≥ 0.95
Type of load
AC1
Mat. contacts AgNi,
contact 8A
250V / 8A
Type of load
AC13
Mat. contacts AgNi,
contact 8A
x
lower level) relay immediately
OFF
M
M
AC2
AC3
uncompensated
250V / 3A
250V / 2A
230V / 1.5A (345VA)
K
AC14
AC15
250V / 3A
250V / 3A
24V / 8A
HRN-57
HRN-57N
Relay for monitoring over / under voltage
in 3-phase mains
Symbol
HRN-57
L1
3~ < U
L2 L3
Connection
HRN-57
L1
L2
L3
L1
L2
16
15
AC5a
AC5a
compensated
AC5b
x
300W
M
DC1
DC3
DC5
24V / 3A
24V / 2A
1 / 2
HRN-57N
16 18
L1
N
3~ < U
15
L2 L3
HRN-57N
L1
L2
L3
N
L1
L3
L2
16
18
15
HAL.230V
AC6a
AC7b
x
250V / 1A
M
DC12
DC13
24V / 8A
24V / 2A
EN
16 18
15
N
L3
18
AC12
250V / 1A
DC14
x
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