Page 21 - Elko relays

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3-PHASE VOLTAGE MONITORING RELAY HRN-54/54N

- over/undervoltage
- phase failure
- phase sequence
Features:
» » Supply from monitored voltage
»»
»»
» » Monitors voltage in 3-phases
»»
» » Upper and lower voltage levels adjustable
» » Adjustable time delay
»»
» » Red LED indication of fault
»»
» » For circuits: 3x 400V & 3x 400V/230V (neutral monitoring: HRN-54N)
»»
» » Output contact: 1x changeover 8A
»»
» » Clamp terminal
»»
»»
» » 1-MODULE, DIN rail mounting
Function Technical parameters HRN-54 / 54N
Supply and measuring
Supply Terminals: L1, L2, L3 / L1, L2, L3, N
Supply/measured voltage: 3 x 230V / 400V
Consumption: max. 2VA
Upper level Umax: 420 - 500V (105-125% Un) /
242 - 288V + 5%
Lower level Umin: 300 - 380V (75 - 95% Un) /
173 - 219V + 5%
Time delay: adjustable 0.5-10s
Setting accuracy: 5%
Output
Number of contacts: 1 x changeover, (AgNi)
Rated current: 8A / AC1
Switching capacity: 2500 VA/AC1, 240 W/DC
Inrush current: 30A / <3s / AC 3 x 288V
Switching voltage: 250V AC1 / 24V DC
Connection, Description Min. breaking capacity DC: 500 mW
Indication of state: red LED
Mechanical life: 1 x 10 7
Electrical life (AC1): 1 x 10 5
Other information
Operating temperature: -20.. + 55 C
0
0
Storage temperature: -30.. + 70 C
Electrical strength: 4 kV (supply - output)
Operating position: any
Mounting: DIN rail EN 60715
Protection degree: IP40
Overvoltage category: III
Pollution degree: 2
2
Max. cable size: max. 2.5mm /with sleeve 1.5mm 2
Dimensions: 90 x 17.6 x 64mm
Weight: 69g
Standards: EN 60255-6, EN 61010-1
Function description
The relay monitors voltages between-phases in 3-phase mains. It is possible to adjust two independent voltage levels and control e.g. overvoltage or
undervoltage separately. In the normal state, when the voltage moves between adjusted levels, the output relay is closed and the red LED is off. If the
voltage limits are exceeded, the output relay is opened and the red LED is on. By phase switching the red LED is on (relay contact is opened). If the
supply voltage drops under 70% of Un ( UOFF - lower level) the relay immediately opens with no delay, and a faulty state is signalled by the red LED.
If the timing is running in this faulty state, it is immediately stopped.

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