Pilz ZUZ S Data Sheet

Electronic Monitoring Relays

Single-phase voltage monitoring

ZUZ S

Technical Details ZUZ S

Electrical data

Measuring voltage = supply voltage AC: 42, 48, 120, 240 V (can be selected)
Tolerance 75 ... 125 %
Power consumption 300 VAC: 30 ... 40 VA
Switching capability in accordance
with EN 60947-4-1, 10/91 AC1: 250 V/0.1 ... 5 A/1100 VA

EN 60947-5-1, 10/91 AC15: 230 V/2 A; DC13: 24 V/1.5 A
Output contacts 2 auxiliary contacts (C/O)
Contact material AgCdO
Contact fuse protection in accordance 6 A quick or 4 A slow
with EN 60947-5-1, 10/91
Power consumption (current peak after AC: 24 V/200 mA; 42 V/300 mA;

The electronic AC voltage monitoring
relay ZUZ S is suitable for generators.

Features

● In-line connection

● Measuring voltage is also the

supply voltage

● Measuring ranges are determi-

ned by the supply

● Different operating voltages can

be selected

● Undervoltage and overvoltage

can be set separately

● Normally energised mode

zero voltage transition) 110 V/600 mA; 300 V/800 mA

Measuring circuit

Frequency range AC: 50 ... 60 Hz
Adjustable limit values for measur. range
Under voltage Measuring voltage - 25 %
Overvoltage voltage Measuring voltage + 20 %
Hysteresis 2 %
Reaction time Max. 700 ms

Environmental data

Ambient temperature -15 ... +55 °C

Mechanical data

Max. cable crosssection 1 x 4 mm² or 2 x 1.5 mm
of external conductor Single-core or multi-core with crimp

Dimensions (H x W x D) 87 x 22.5 x 122 mm
Weight 130 g

1

DC1: 24 V/0.1 ... 5 A/120 W

2

connector

Description

The voltage monitoring relay is en­closed in an S-95 slimline housing.
1 version is available for operation
with 4 AC-voltage levels.
Features:

● Relay outputs: 2 auxiliary contacts

(C/O)

● Setting options

Response value U
Response value U

● 4 supply voltage levels can be set

: 75...100 % U

min

: 100...120 % U

max

using a rotary switch

● LEDs for switching status of the

relay and supply voltage.

The ZUZ S is used as a threshold
value switch. The response values for
undervoltage and overvoltage can
be set separately. If the measuring
voltage exceeds U
changes to the operating status.

, the relay

min

Auxiliary contacts 11-12 and 21-22
open and 11-14 and 21-24 close.
If the measuring voltage exceeds
U

or falls below U

max

changes to the rest condition.

, the relay

min

Auxiliary contacts 11-12 and 21-22
close and 11-14 and 21-14 open.
The LED “FAULT” is illuminated if U
is outside the permitted range, i.e.
falls below U

B

B

or exceeds U

min

max

B

.

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-226-09/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

Single-phase voltage monitoring

ZUZ S

Internal wiring diagram

A2

A1

(-)

(+)

U

B

U

M

~

G1

=

Timing diagram

U

max

U

B

U

min

0 V

U

minUmax

S1

Connection example

= U

1L1

B

1L2

A1 11

21

14

12

A2

22 24

11

21

K1

12

14

22

24

U

M

11-14

11-12

21-24

21-22

Fault

Power

UB > 50 % UB:

The LED “mains monitoring”
is on.

UB > U

:

min

The relay changes to operating
status, the switching status LED
goes out.

UB > U

:

max

The relay changes to the rest
condition, the switching status
LED goes on.

Rest condition

- Contact 11-12 and 21-22
are closed

- Contact 11-14 and 21-24
are open

Operating status:

- Contact 11-12 and 21-22
are open

- Contact 11-14 and 21-24
are closed

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-226-09/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

Single-phase voltage monitoring

ZUZ S

General Details

Unless stated otherwise in the technical details for the specific unit.

Electrical data

AC frequency range 50 ... 60 Hz
DC residual ripple 160 %
Contact material AgCdO
Continuous duty 100 %

Environmental data

EMC EN 50081-1, 01/92, EN 50082-2, 03/95
Vibration in accordance
with EN 60068-2-6, 04/95 Frequency: 10 ... 55 Hz,

Climatic suitability IEC 60068-2-3, 1969
Airgap creepage DIN VDE 0110-1, 04/97, 4 kV/3
Ambient temperature -10 ... +55 °C
Storage temperature -40 ... +85 °C

Mechanical data

Torque setting for connection terminals 0.6 Nm (screws)
Mounting position Any
Housing material Thermoplastic Noryl SE 100
Protection types Mounting: IP 54

1

Amplitude: 0.35 mm

Housing: IP 40
Terminals: IP 20

Order references key

UMMeasuring voltage

Order references

Type U

ZUZ-S 42, 48, 120, 240 VAC 827 110

M

Order no.

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-226-09/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]