HRN3-80 Voltage Monitoring Relays in 3P

Product Specifications

• Manufacturer: ELKO EP, s.r.o.
• Country of Origin: Czech Republic
• Model: HRN3-80 / HRN3-81
• Revision: 02-73/2016 Rev.: 2
• Features: Voltage monitoring relays in 3P, selectable
  range/fixed range

Product Usage Instructions

Installation

1. Ensure power is turned off before installation.

2. Identify the appropriate mounting location for the relay.

3. Connect the relay to the power source following the provided
   wiring diagram.

4. Securely mount the relay in place using appropriate
   fixtures.

Operation

1. Power on the relay and verify the LED indicators are
   functioning.

2. Set the desired voltage monitoring range using the selector
   switch (if applicable).

3. Monitor the relay for any voltage fluctuations or
   irregularities in the connected circuit.

4. Refer to the user manual for troubleshooting steps in case of
   any issues.

Maintenance

1. Regularly check the connections for any signs of wear or
   damage.

2. Clean the relay periodically to ensure proper functioning.

3. Calibrate the voltage monitoring settings as needed based on
   the application requirements.

Frequently Asked Questions (FAQ)

Q: What should I do if the relay fails to operate?

A: Check the power source, connections, and settings to ensure
proper installation and operation. Refer to the user manual for
troubleshooting steps.

Q: Can the voltage monitoring range be adjusted?

A: Yes, if applicable, the voltage monitoring range can be
adjusted using the selector switch provided on the relay.

ELKO EP, s.r.o.
Palackého 493 769 01 Holesov, Vsetuly Czech Republic Tel.: +420 573 514 211 e-mail: elko@elkoep.com www.elkoep.com
Made in Czech Republic
02-73/2016 Rev.: 2

EN HRN3-80 HRN3-81
Voltage monitoring relays in 3P – selectable range/fixed range

Characteristics
· The relay is designed to monitor undervoltage (HRN3-80), phase loss, sequence and asymmetry in 3-phase network.
· Power supply from monitored circuit. · HRN3-80: Monitors the drop below the lower voltage level (Umin). · HRN3-80: The lower level of Umin is set in % of the selected range. · Wide range of monitored voltage 208 ­ 480 V. · Adjustable time delay (to eliminate short-term voltage drops). · Measures true root mean square value of the voltage – TRUE RMS. · Adjustable level of asymmetry with the option to turn it off.

Symbol
HRN3-80 L1
3~ <U
L2 L3

16 18 15

HRN3-81 L1
3~ U
L2 L3

16 18 15

Description
HRN3-80
1 2 3
Connection

Technical parameters

4

5

6 1. Supply voltage/time delay (t1)

indication

2. HRN3-80: Range setting

7

3. Time delay (t2) 4. Supply/monitored voltage

terminals (L1-L2-L3)

5. Indication of operating states

6. HRN3-80: Lower level setting

(Umin)

7. Asymmetry setting

8 8. Output contact (15-16-18)

L1 L2 L3
L1 L2 L3
15 16 18

Supply and measuring Supply/monitored terminals: Supply/monitored voltage: Consumption (max.): Range setting: Lower level setting (Umin): Asymmetry setting: Max. permanent voltage: Peak overload (1 s): Time delay (t1): Time delay (t2): Accuracy Setting accuracy (mech.): Repeat accuracy: Temperature dependency: Hysteresis (fault to OK): Output Contact type: Current rating: Breaking capacity: Switching voltage: Power dissipation (max.): Mechanical life: Electrical life (AC1): Other information Operating temperature: Storage temperature: Dielectric strength: Operating position: Mounting: Protection degree: Overvoltage category: Pollution degree: Cross-wire section ­ solid/ stranded with ferrule (mm2): Dimensions: Weight: Standards:

HRN3-80

HRN3-81

L1-L2-L3

AC 3× 208 ­ 480 V (50-60 Hz)

2 VA/1 W

adjustable

fixed

80 ­ 95 %Un

x

adjustable, 2 ­ 10 %Un + OFF

AC 3× 550 V

AC 3× 600 V

2 s

adjustable, 0.3 ­ 30 s

5 % < 1 % < 0.1 %/°C (°F) 5 %

1x changeover/SPDT (AgNi) 16 A/AC1
4000 A/AC1, 384 W/DC1 250 V AC/24 V DC 1.2 W 10.000.000 ops. 100.000 ops.

­20 .. 55 °C (­4 .. 131 °F)

­30 .. 70 °C (­22 .. 158 °F)

AC 4 kV (supply ­ output)

any

DIN rail EN 60715

IP40 front panel / IP20 terminals

III.

2

max. 1× 2.5, 2× 1.5/

max. 1× 2.5 (AWG 14)

90 × 17.6 × 64 mm (3.5 × 0.7 × 2.5)

66 g (2.32 oz)

64 g (2.26 oz)

EN 60255-1, EN 60255-26, EN 60255-27

1 / 2

Function Undervoltage:
Phase sequence:

Hysteresis Hysteresis Hysteresis

Phase asymmetry, failure:

After connecting the device to the supply voltage, both LEDs on the panel will flash briefly. If 3-phase voltage is connected to the monitoring relay and all conditions are met (correct voltage level, phase sequence and asymmetry), the output contact closes after the time delay t1 elapsed. During the time delay, the green,,LED Un” flashes, at the end of the delay,,LED Un” lights up continuously (OK state).
When the voltage drops below the lower level ,,Umin” (HRN3-80 only), after the time delay t2 has elapsed the green and red LEDs are lit. The output contact is open (fault state). During the time delay t2, the red,,LED S” flashes quickly.
If the phase sequence is incorrect when the power supply is connected, after the time delay t1 has elapsed the green and red LED flashes quickly. The output contact is open (fault state). During the time delay t1, the green,,LED Un” flashes.
When the set phase asymmetry is exceeded, after the time delay t2 has elapsed the green LED is lit and the red LED flashes briefly. The output contact is open (fault state). During the time delay t2, the red,,LED S” flashes quickly.
In the event of phase failure, the output contact opens without a time delay t2 (fault state), the green and red LEDs are lit.
The return from the fault state to the OK state occurs without a time delay.

Graphs legend: L1, L2, L3 = 3-phase voltage t1 = time delay, after connecting to voltage t2 = time delay into fault state 15-18 = output contact LED S = indication of operating states LED Un = supply voltage, time delay t1 indication
Warning
This device is constructed for connection in 3-phase network AC 3× 208­480 V and must be installed according to norms valid in the state of an application. Installation, connection, setting and servicing must be carried out by qualified electrician staff only, which have perfectly understood the instructions and functions of the device. This device contains protection against overvoltage peaks and disturbing impulses in the power supply network. For the correct function of the protection of this device, there must be suitable protections of higher degrees (A,B,C) installed in front of them and according to the standards, interference of switching devices must be securely eliminated (contactors, motors, inductive loads, etc.). Before installation, make sure that the device is de-energized and the main switch is in the “OFF” position. Dont install the device to sources of excessive electromagnetic interference. Ensure correct installation by perfect air circulation so that during continuous operation and a higher ambient temperature, the device does not exceed the maximum allowed operating temperature. For installation and setting use a screwdriver with a width of approx 2 mm. Keep in mind that this is a fully electronic device and approach accordingly with the installation. Non-problematic function of the device is also dependent on the previous method of transportation, storage, and handling. In case of any signs of damage, deformation, malfunction, or missing parts, dont install this device and claim it at the dealer. The product must be treated as electronic waste at the end of its life.

Type of load
Contact material AgNi, 16A
Type of load
Contact material AgNi, 16A

cos 0.95
AC1 250V / 16A
AC13 250V / 6A

M AC2 250V / 5A
AC14 250V / 6A

M AC3 250V / 3A
K AC15 250V / 6A

AC5a uncompensated

AC5a compensated

230V / 3A (690VA)

x

M

DC1

DC3

24V / 16A

24V / 6A

2 / 2

HAL.230V
AC5b 800W
M DC5 24V / 4A

AC6a x
DC12 24V / 16A

AC7b 250V / 3A
DC13 24V / 2A

AC12 250V / 10A
DC14 24V / 2A

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