Crouzet 84873023 Data Sheet

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Phase control

MWG

MWUA

MWU MWA

Part numbers

Product adaptations

Accessories

General characteristics

➜ Multi-function phase control relay - 17.5 mm

■ Control of 3-phase networks: phase sequence, phase

failure, imbalance (asymmetry), over and undervoltage

■ Range includes mono-function product and multi-

function product

■ Multi-voltage from 3 x 208 to 3 x 480 V

■ Controls its own supply voltage

■ True RMS measurement

■ LED status indication

Type Functions Nominal voltage (V) Code

MWG Phase sequence and failure MWU Phase sequence, failure, undervoltage MWA Phase sequence, failure and imbalance MWUA Phase sequence, failure, imbalance, under and overvoltage in

window mode

3 x 208 3 x 208 3 x 208 3 x 208

➞ 3 x 480 V ➞ 3 x 480 V ➞ 3 x 480 V ➞ 3 x 480 V

a a a a

■ Customisable colours and labels

■ Single voltage in the generic range

■ Adjustable fixed hysteresis

■ Fixed or adjustable time delay except for MWG

Dedicated adaptation on MWG:

■ Adjustable regeneration rate

Dedicated adaptation on MWU:

■ Fixed undervoltage threshold in the generic range

Dedicated adaptation on MWA:

■ Fixed asymmetry threshold in the generic range

Dedicated adaptations to MWUA:

■ Fixed undervoltage threshold in the generic range

■ Fixed overvoltage threshold in the generic range

■ Fixed asymmetry threshold in the generic range or adjustable 5➞ 25 %

84873022 84873023 84873024 84873025

Description Code

Removable sealable cover for 17.5 mm casing

Supply

Supply voltage Un Voltage supply tolerance -12% / +10%

Operating range

supply voltage frequency Galvanic isolation of power supply/measurement No Power consumption at Un

Immunity from micro power cuts 10 ms

3 x 208

➞ 3 x 480 V

183

➞ 528 V

50 / 60 Hz ±10%

1.8 VA in

MWG / MWU / MWA / MWUA

84800000

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General characteristics

Inputs and measuring cicuit

Measurement ranges

183 Selection of phase-phase nominal voltage Un 208 - 220 - 380 - 400 - 415 - 440 - 480 V Frequency of measured signal 50

➞ 60 Hz ± 10%

Max. measuring cycle time 150 ms/True RMS measurement Voltage threshold adjustment 2

➞ 20% of selected Un

(-2 to -12% across the 3 x 208 V

the 3 x 220 V Voltage threshold hysteresis 2% of fixed Un Asymmetry threshold hysteresis 2% of fixed Un Asymmetry threshold adjustment 5 to 15% of fixed Un Display precision ± 3% of the displayed value Repetition accuracy with constant parameters ± 0.5% Measuring error with voltage drift < 1% across the whole range Measuring error with temperature drift < 0.05%/ °C Maximum regeneration (phase failure) 70%

Timing

Delay on threshold crossing 0.1 to 10 s (0, +10%) Repetition accuracy with constant parameters ± 3% Reset time 1500 ms Delay on pick-up 500 ms Alarm on delay time max. < 200 ms

Output

Type of output 1 single pole changeover relay Type of contacts No cadmium Maximum breaking voltage

Max. breaking current Min. breaking current Electrical life (number of operations) Breaking capacity (resistive)

250 V

5 A

10 mA / 5 V

1 x 10

1250 VA Maximum rate 360 operations/hour at full load Operating categories acc. to IEC 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14 Mechanical life (operations)

30 x 10

Insulation

Nominal insulation voltage IEC 60664-1 400 V Insulation coordination (IEC 60664-1 / 60255-5) Overvoltage category III: degree of pollution 3 Rated impulse withstand voltage IEC 60664-1/60255-5 4 KV (1.2 / 50 µs) Dielectric strength IEC 60664-1/60255-5 2 kV AC 50 Hz 1 min Insulation resistance IEC 60664-1 / 60255-5

> 500 MΩ / 500 V

General characteristics

Display power supply Green LED Display relay Yellow LED - This LED flashes during the threshold delay Casing 17.5 mm Mounting On 35 mm symmetrical DIN rail, IEC/EN 60715 Mounting position All positions Material: enclosure plastic type VO to UL94 standard Incandescent wire test according to IEC 60695-2-11 & NF EN 60695-2-11 Protection (IEC 60529) Terminal block: IP20

Casing: IP30 Weight 80 g Connecting capacity IEC 60947-1

Rigid: 1 x 4

1 x 11 AWG - 2 x 14 AWG

Flexible with ferrules: 1 x 2.5

1 x 14 AWG - 2 x 16 AWG Max. tightening torques IEC 60947-1 0.6 Nm Operating temperature IEC 60068-2 -20 Storage temperature IEC 60068-2 -40

➞ +50°C ➞ +70°C

Humidity IEC 60068-2-30 2 x 24 hr cycle 95% RH max. without condensation 55°C Vibrations according to IEC/EN60068-2-6 10

➞ 150 Hz, A = 0.035 mm

Shocks IEC 60068-2-6 5 g

Standards

Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC Product standard NF EN 60255-6 / CEI 60255-6 / UL 508 / CSA C22.2 N°14 Electromagnetic compatibility Immunity EN 61000-6-2/IEC 61000-6-2

Certifications UL, CSA, GL

Emission EN 61000-6-4/EN 61000-6-3

IEC 61000-6-4/IEC 61000-6-3

Emission EN 55022 class B

pending Conformity with environmental directives RoHS, WEEE

Comments

* 3-phase mains with earth

➞ 528 V

range / 2 to 10% across the 3 x 480 V a range)

- 2 x 2.52 mm2

➞ 1 / 5.3 ➞ 8.8 Lbf.In

range / -2 to -17% across

- 2 x 1.52 mm

Overview

Phase control

Principles

30%

3-phase network control relays monitor:

- The correct sequence of phases L1, L2, L3

- Total phase failure

- Undervoltage and overvoltage from 2 to 20 % of Un

- Asymmetry rate from 5 to 15% of Un

- LEDs are used for fault signalling. If a fault persists for longer than the threshold crossing delay configured by the user, the output relay opens and the LED R is extinguished.

MWG - Phase failure and sequence (with regeneration)

Phase L1

Phase L2

Phase L3

Relay

30%

MWU - Phase failure and sequence (with regeneration)

Phase L1

Phase L2

Phase L3

Relay

MWU - Undervoltage

L2 L3

3 4

Hysteresis

Undervoltage

Phases L1, L2, L3

Relay

Delay on threshold crossing (Tt)

Operating principle MWG: Phase controller with voltage regeneration Voltage selector switch:

Set the selector switch to the 3-phase network voltage Un. The position of this selector switch is only taken into account when the unit is powered up. If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the voltage selected on energisation prior to the change of position. The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation.

The relay monitors its own supply voltage.

The relay controls:

- correct sequencing of the three phases

- failure of one of the three phases (U measured < 0.7 x Un). In the event of a phase sequence or failure fault, the relay opens instantaneously. When the unit is powered up with a measured fault, the relay stays open.

Operating principle MWU: Phase controller with voltage and undervoltage regeneration Voltage selector switch:

The relay monitors its own supply voltage.

The relay controls:

- correct sequencing of the three phases

- failure of one of the three phases (U measured < 0.7 x Un).

- undervoltage, adjustable from -2 to -20% of Un (-2 to -12% across the 3 x 208 V range and -2 to 17% for the 3 x 220 V range due to the minimum voltage 183 V

). In the event of a phase sequence or failure fault, the relay opens instantaneously. In the event of a voltage fault, the relay opens at the end of the time delay set by the user. When the unit is powered up with a measured fault, the relay stays open.

Principles

MWA - Failure, phase sequence and asymmetry Operating principle

3 4

0 %

Phase L1

Phase L2

Phase L3

Asymmetry threshold

Hysteresis

Relay

Delay on threshold crossing (Tt)

MWA: Phase controller with voltage and asymmetry regeneration Voltage selector switch:

The relay monitors its own supply voltage.

The relay controls:

- correct sequencing of the three phases

- failure of one of the three phases (U measured < 0.7 x Un).

- asymmetry, adjustable from 5 to 15% of Un. In the event of a phase sequence or failure fault, the relay opens instantaneously. In the event of an asymmetry fault, the relay opens at the end of the time delay set by the user. When the unit is powered up with a measured fault, the relay stays open. Asymmetry is defined as follows: (Vrms max. - Vrms min.) /Vrms mains. Vrms mains corresponds to the voltage selected by the switch on the front face.

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MWUA - Failure, phase sequence and asymmetry Operati ng principle

MWUA: Phase controller with voltage regeneration + Asymmetry + Under/Overvoltage

3 4

0 %

Phase L1

Phase L2

Phase L3

Asymmetry threshold

Hysteresis

Relay

Delay on threshold crossing (Tt)

Voltage selector switch:

The relay monitors its own supply voltage.

The relay controls:

- correct sequencing of the three phases

- failure of one of the three phases (U measured < 0.7 x Un).

- asymmetry, adjustable from 5 to 15% of Un, and the under and overvoltage drift adjustable from 2 to 20% of Un (-2 to -12% across the 3 x

208 V

range, -2 to -17% across the 3 x 220 V a range due to the minimum voltage 183 V

; +2 to +10 % across the 3 x 480 V a range due to the maximum voltage 528 V a). In the event of a phase sequence or failure fault, the relay opens instantaneously. In the event of an asymmetry or voltage fault, the relay opens at the end of the time delay set by the user. When the unit is powered up with a measured fault, the relay stays open. Asymmetry is defined as follows: (Vrms max. - Vrms min.) /Vrms mains. Vrms mains corresponds to the voltage selected by the switch on the front face.

MWUA - Under and overvoltage in window mode

Overvoltage

L1 L2

Hysteresis

Undervoltage

Phases L1, L2, L3

Relay

Delay on threshold crossing (Tt)

Dimensions (mm) Connections

MWG - MWA - MWU - MWUA MWG - MWA - MWU - MWUA

23,2

3,5

17,5

67,5

L1 L3L2

5,5

2,6

100 mA fast-blow fuse

12 1411

Crouzet 84873023 Data Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual