80

ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de

Voltage Monitoring Type SW

Voltage Monitor for 3-Phase Networks

Undervoltage

AC 230 V, +10...-15%, < 3 V

upon request

50/60 Hz

1 change-over contact (co)

Type 2 see "general technical information"

see "general technical information"

-20°C...+55°C

app. 1 s

Design K: 75 x 22 x 115 mm

IP 30 / IP 20

app.135 g

other Voltages

Frequency

Relay-Output

Type of Contact

Testing Conditions

Rated ambient Temp. Range

Hysteresis

Switching delay

Dimensions (H x W x D) mm

Protection Housing/Terminals

Weight

Technical Data

Undervoltage monitor for three-

phase networks without N for

monitoring on voltage failure.

The voltage is being measured

between phases and an artificial

neutral point. At symmetrical

decreaseofthevoltagetoapprox.

50% of the nominal value or in

case of failure of a phase the

integrated relay (1 change-over

contact) releases with a delay of

approx.1s. Withenginesrunning-

•

•

on on 2 phases, so much back voltage can be produced

that the failure of a phase may be not detected. The

SW31K is available for measuring voltages AC 400 V

andAC 690 V.As supply voltage in the standard version

AC 230 V is needed.

Application:

Monitoring of three-phase networks on loss of a

phase

monitoring of fuses

2015-12-14

SW31K

Part numbers:

S222272

AC 400 V

S222271

AC 690 V

Special Versions upon request

Unterspannungswächter

SW31K

S222272

AC 220-

240 V

50-60 Hz

< 2VA

A2

A1

L2

L1

L3

18

16

15

50%

Made in Germany

2 L1

2 N

AC 230 V

50 Hz

SIGNAL ON

ALARM

T 4 A (gL)

1 L1

1 L3

1 L2

3 AC

400 V