E
Universal voltage or current detecting and
monitoring relay
71.41.8.230.1021 - Voltage monitoring
71.51.8.230.1021 - Current monitoring
• Zero voltage memory according to
EN60204-7-5
• Programmable for DC or AC detection level:
- range detecting: upper and lower value
- upper set point minus hysteresis range
(5…50)% for switch on
- lower set point plus hysteresis range (5…50)%
for switch on
• Fault memory
• Electrical isolation between measuring and
supply circuits
• Immune to supply interruptions of <200ms
• Wide detecting range:
- voltage: DC (15…700)V, AC (15…480)V
• 35mm rail (EN60715) mounting
Screw Terminal
For outline drawing see page 7
71.41.8.230.1021 71.51.8.230.1021
• Programmable universal voltage monitoring
relay
• Programmable universal current monitoring relay
• Usable with current transformer 50/5, 100/5,
150/5, 250/5, 300/5, 400/5 or 600/5
• AC/DC voltage detection - adjustable
• AC (50/60Hz) (15…480)V
• DC (15…700)V
• Switch-on hysteresis (5…50)%
• Switch-off delay (0.1…12)s
• AC/DC current detection - adjustable
• AC(50/60Hz) (0.1…10)A with current
transformer to 600A
• DC (0.1…10)A
• Switch-on hysteresis (5…50)%
• Switch-off delay (0.1…12)s
• Start delay (0.1…20)s
programmable programmable
Contact specification
Contact configuration 1 CO (SPDT) 1 CO (SPDT)
Rated current/Maximum peak current A 10/15 10/15
Rated voltage/
Maximum switching voltage
VAC 250/400 250/400
Rated load AC1 VA 2500 2500
Rated load AC15 (230VAC) VA 500 500
Single phase motor rating (230VAC) kW 0.5 0.5
Breaking capacity DC1: 30/110/220V A 10/0.3/0.12 10/0.3/0.12
Minimum switching load mW (V/mA) 300 (5/5) 300 (5/5)
Standard contact material AgSnO2AgSnO2
Supply specification
Nominal voltage (UN) VAC (50/60Hz) 230 230
VDC — —
Rated power AC/DC VA (50Hz)/W 4/— 4/—
Operating range AC (0.85…1.15)UN(0.85…1.15)UN
DC — —
Technical data
Electrical life at rated load AC1 cycles 100·103100·103
Detection levels AC(50/60Hz)/DC (15…480)V/(15…700)V (0.1…10)A at transducer to 600A/(0.1…10)A
Switch-off/reaction/Start delay (0.1…12)s/<0.35s/<0.5s (0.1…12)s/<0.35s/(0.1…20)s
Switch-on level of the detecting level % 5…50 5…50
Fault memory - programmable Yes Yes
Electrical isolation: Supply to Measuring circuits Yes Yes
Ambient temperature range °C –20…+55 –20…+55
Protection category IP 20 IP 20
Approvals (according to type)
3
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71
SERIES
71 SERIES
Monitoring relays 10A