Datasheet

ESG 5.18
Indicators
Red LED ON/OFF: indication of failure of the
corresponding threshold
Red LED flashes: indication of tripping delay
of the corresponding threshold
Yellow LED ON/OFF: indication of relay output
Time ranges
Start-up suppression time: -
Tripping delay: Adjustment range 0.1 ... 10 s
3-phase voltage monitoring relay (Multifunction)
EMR SU31C1, SU31D1
Functions
Voltage monitoring in 3-phase mains with adjustable thresholds,
adjustable tripping delay, monitoring of phase sequence and phase
failure, monitoring of asymmetry with adjustable threshold and the
following functions (selectable by means of rotary switch)
- Undervoltage monitoring
- Undervoltage monitoring and monitoring of phase sequence
- Monitoring of window between Min and Max
- Monitoring the window between Min and Max and monitoring
of phase sequence.
• Voltage monitoring in 3-phase mains
• Measuring range 230/132 / 400/230 Vac 3Ph
• Multifunction
• Monitoring of phase sequence and phase failure
• Additional asymmetry monitoring
• Connection of neutral wire optional
• 2 changers
Reference data
Selectron
®
EMR Article no.
SU31D1 400/230 Vac 3Ph 41230018
SU31C1 230/132 Vac 3Ph 41230017
(Order data see chapter 1)
Connecting voltages
3 (N) ~ 230/132 V, terminals (N)_L1_L2_L3 (= Measuring voltage)
3 (N) ~ 400/230 V, terminals (N)_L1_L2_L3 (= Measuring voltage)
100% duration of operation
Output relay
1 NC contact / 1 NO contact
Rated voltage: 250 Vac
Switching capacity: 1250 VA (5 A / 250 Vac)
Fusing: 5A fast acting
EMR SU31C1
EMR SU31D1