Datasheet

ManualsBrandsSelectron ManualsMonitoring RelaysVoltage Monitoring Relay

ESG 7.10

3-phase voltage monitoring relay

EMR IU11D1, IU21D1

Functions

Monitoring of phase sequence, phase failure and monitoring of

asymmetry with adjustable asymmetry.

• Voltage monitoring in 3-phase mains

• Measuring range 400/230 Vac 3Ph

• Monitoring of phase sequence and phase failure

• Monitoring of asymmetry

• Connection of neutral wire optional

• 1 or 2 change-over contacts

Reference data

Selectron

EMR Article no.

IU11D1 41230030

IU21D1 41230031

(Order data see chapter 1)

Connecting voltages

3(N) ~400/230 V, Terminals (N)-L1-L2-L3 (= supply voltage)

-30% ... +30% of U

100% duration of operation

Indicators

Green LED ON: indication of supply voltage

Yellow LED ON/OFF: indication of relay output

Output relay

1 or 2 potential free change-over contact(s)

Rated voltage: 250 Vac

Switching capacity: 1250 VA (5 A / 250 Vac)

Fusing: 5A fast acting

EMR IU11D1

EMR IU21D1

Summary of content (6 pages)

PAGE 1
3-phase voltage monitoring relay EMR IU11D1, IU21D1 • Voltage monitoring in 3-phase mains • Measuring range 400/230 Vac 3Ph • Monitoring of phase sequence and phase failure • Monitoring of asymmetry • Connection of neutral wire optional • 1 or 2 change-over contacts Functions Monitoring of phase sequence, phase failure and monitoring of asymmetry with adjustable asymmetry.
PAGE 2
3-phase voltage monitoring relay EMR IU11D1, IU21D1 Technical data Nominal consumption EMR IU11D1 EMR IU21D1 3(N) ~400/230 V, 8 VA / 0.8 W 3(N) ~400/230 V, 11 VA / 1.2 W 48 ... 63 Hz >20% of the supply voltage ±5% ≤5% ±2% ≤0.05% / °C fixed, approx.
PAGE 3
-phase voltage monitoring relay EMR IU11D1, IU21D1 Function description LED U L1 L2 L3 L1 L3 L2 Phase sequence monitoring When all the phases are connected in the correct sequence and the measured asymmetry is less than the fixed value, the output relay switches into on-position (yellow LED illuminated). When the phase sequence changes, the output relay switch into off-position (yellow LED not illuminated).
PAGE 4
3-phase voltage monitoring relay EMR IU11D1, IU21D1 Connection L1 L2 L3 N 3N L1 L2 L3 N 3N N L1 L3 L2 N 11 L3 L2 L1 11 21 R R R 12 14 12 14 22 24 11 12 14 12 22 14 11 21 24 EMR IU11D1 EMR IU21D1 Switching voltage [Vdc] Switching voltage [Vdc] Load limit curves 300 200 100 ohmic load 50 40 30 20 10 0,1 0,2 0,5 1 2 5 10 300 200 2 poles ohmic load 100 50 40 30 1 contact 20 10 20 2 contacts in series 0,1 0,2 Switching current [A] 0,5 1 2 5 10 20 Switching curre
PAGE 5
Technical safety advice This manual contains the information necessary for the correct utilisation of the products described therein.
PAGE 6
Prescriptions and standards Mechanical data Housings in self-extinguishing plastic material. Protection mode IP 40 Fixing on profile rail TS 35 according to EN 60715 Connection mark according to IEC 60067-1-18a Environmental conditions Admissible environmental temperatures from -25 ºC ... +55 ºC (according to IEC 60068-1) Storage and transport temperature from -25 ºC ...