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VOLTAGE RELAY PNM-32 

INSTRUCTION MANUAL

Zakład Mechaniki i Elektroniki 

ZAMEL 

sp.j.

J.W. Dzida, K. Łodzińska

ul. Zielona 27, 43-200 Pszczyna, Poland

Tel. +48 (32) 210 46 65, Fax +48 (32) 210 80 04

www.zamelcet.com

, e-mail: [email protected]

CONNECTION

APPERANCE

MAIN RESET

MOUNTING

DIMENSIONS

PRODUCT FAMILY

The PNM-32 is a member of the PNM 

product family.

1.  Disconnect power supply by the pha

-

se  fuse,  the  circuit-breaker  or  the 

switch- disconnector combined to the 

proper circuit.

2.  Check if there is no voltage on con

-

nection cables by means of a spe

-

cial measure equipment.

3.  Install the PNM-32 on the TH-35 DIN 

rail in the switchboard.

4.  Connect the cables with the terminals 

in accordance with the installing dia

-

gram.

5.  Switch on the power supply from the 

mains.

WARRANTY CARD

INNER DIAGRAM

 In order to cancel the circuit data and set de

-

fault values it is necessary, in the main win

-

dow, to press and hold simultaneously (  and 

) keys for 

3 seconds

;

 All display fields will be lighted;

 The  main  window  will  be  entered  after  a 

while.

FUNCTIONING

After power supply switching on it is necessary to set maximum and minimum voltage, hy

-

steresis, phase unbalance and the relay ON-time and OFF-time. If not, the following default 

values will be set   = 235 V,   = 225 V, 

 = 1 V, 

 = 2 s, 

 = 2 s, 

 = 10 V. If all 

phase voltages are greater or equal to 170 V, automatic phase sequence checking will start. 

In case of incorrect phase sequence the output relay will be switched OFF (

), the symbol 

will be displayed: 

, and a message with info which phases are to be changed over in or

-

der to set a correct phase sequence will be displayed too. If the phase sequence is correct, 

the device will start displaying measured voltages in three-second cycles (see the figure) 

and voltages controlling. 

It  is  possible  to  toggle 

between the phases by 

pressing the cursors 

 

which  causes  breaking 

cyclic  phase  voltages 

display  (every  3  s)  and 

holding  the  set  phase 

display  for  20  seconds. 

If  the  voltages  are  in

-

cluded within the set range (

), after 

 time the relay will be ON ( ). Any voltage 

threshold exceeding for the given phase will be signalled by displaying the following sym

-

bol:   for the minimum threshold   and the   symbol for the max voltage  , and start 

counting the time 

, and then will switch OFF the output relay (

). If, during displaying 

e.g. the L3 phase voltage, the L1 or L2 phase voltage falls below the voltage threshold 

or exceeds the min  , threshold, the device will toggle the phase value displayed actually 

to the phase with the incorrect voltage value and will remain in this state until the wrong va

-

lue disappears or the relay is OFF. Układ wykrywa również asymetrię napięcia. The device 

is capable of detecting voltage unbalance. If the potential difference between the phases is 

greater than 

, the display will show  , and after 

 time the relay will be OFF (

).

L2

L1

L3

KLAW.

LCD

μC

ZAS.

A/C

A/C

A/C

N

FEATURES

TECHNICAL DATA

DESCRIPTION

PNM-32

Power terminals: L1, L2, L3, N

Rated voltage: 230/400 V AC

Rated voltage tolerance: -15 ÷ +10 %

Rated frequency: 50 / 60 Hz

Rated current: 2 W / 14 VA

Measured voltage indicator: wyświetlacz LCD

Relay state and soft network indicator: wyświetlacz LCD

Voltage unbalance / phase sequence indicator: wyświetlacz LCD

Voltage threshold settings: klawiatura

U

min adjustment range: 170 ÷ 225 V

U

max adjustment range: 235 ÷ 290 V

Voltage hysteresis adjustment range: 1 ÷ 4 V

Unbalance level adjustment range: 10 ÷ 60 V

OFF-time toff

:

2 ÷ 15 s keyboard

ON-time ton

:

2 ÷ 15 s keyboard

Time setting accuracy: max ±1 s / 24 h  at temp. 25 °C

Voltage measurement accuracy (50 Hz sinus):  ±1,5 %*

Output relay parameters: 1NO/NC - 16 A / 250 V AC1 4000 VA

Number of terminal clamps:  12

Section of connecting cables:  0,2 ÷ 2,50 mm

2

Ambient temperature range: -20 ÷ +60 

o

C

Operating position: freely

Mounting: rail TH 35 (PN-EN 60715)

Protection degree: IP20 (PN-EN 60529)

Protection level: 

II

Overvoltage category:

II

Pollution degree:

2

Dimensions: double-modular (35 mm) 90x35x66 mm

Weight:  0,12 kg

Reference standards: PN-EN 60730-1; PN-EN 60730-2-1;

PN-EN 61000-4-2,3,4,5,6,11

* The PNM-32 device is not fitted with the True RMS converter and therefore only 50 Hz sinusoidal voltages can be measured correctly; 

if there are significant harmonic distortions, the measurement result error may be serious.

● Three-phase  load  protection  against 

voltage  swing  and  unbalance,  and 

 

incorrect phase sequence,

● Measured voltage state indicator,

● Relay state indicator,

● The device supplying with any phase,

● Minimum (170 ÷ 225 V) and maximum 

 

(235 ÷ 290 V) voltage setting,

● OFF-time delay adjustment,

● Voltage control for each phase,

● Correct phase sequence control,

● Voltage unbalance control,

● Relay  output  -  single  changeover 

 

contact, maximum load 16 A,

● Mounted on TH 35 rail.

The  PNM-32  voltage  relay  is  designed 

for the three-phase system voltage con

-

trol  and  load  protection.  It  is  possible 

to  set  minimum  and  maximum  voltage, 

hysteresis,  voltage  unbalance  and  ON 

/  OFF  delay.  The  device  is  capable  of 

detecting  voltage  unbalance  and  phase 

sequence. The LCD display and keybo

-

ard enable easy parameters visualization 

and programming.

The device is designed for 

three-phase installation and 

must  be  installed  in  accor

-

dance with standards valid 

in a particular country. The 

device  should  be  connec

-

ted according to the details 

included in this operating manual. Installa

-

tion, connection and control should be car

-

ried out by a qualified electrician staff, who 

act in accordance with the service manual 

and the device functions. Disassembling of 

the device is equal with a loss of guarantee 

and  can  cause  electric  shock.  Before  in

-

stallation make sure the connection cables 

are not under voltage. The cruciform head 

screwdriver 3,5 mm should be used to in

-

stal the device. Improper transport, storage, 

and  use  of  the  device  influence  its  wrong 

functioning. It is not advisable to instal the 

device in the following cases: if any device 

part is missing or the device is damaged or 

deformed. In case of improper functioning 

of the device contact the producer.

CAUTION

Values (voltage, time)

Information field

Relay mode

Relay output terminals
(12, 11, 14)

Power / measure terminals 

(L1, L2, L3)

Power terminal (N)

Display

Control buttons

VER. 001_14.09.2009

The symbol means selective  

collecting of electrical and electronical 

equipment. It is forbidden to put  

the used equipment together  

with other waste

Device version:

10 – single phase

31 – three-phase

32 – three-phase, LCD

Device type

There is 24 months guarantee on the product

Salesman stamp and signature, date of sale

1. ZMIE ZAMEL SP. J. assures 24 months guarantee for the product.

2. The manufacturer’s guarantee does not cover any of the following actions:

a) mechanical damage during transport, loading / unloading or under other circumstances,

b) damage caused by incorrect product mounting or misuse,

c) damage caused by unauthorised modifications made by the PURCHASER or any third parties to the product or any other devices 

needed for the product functioning, 

d)  damage caused by Act of God or any other incidents independent of the manufacturer.

3. The PURCHASER shall lay any claims in writing to the dealer or ZMIE ZAMEL SP. J.

4. ZMIE ZAMEL SP. J. is liable for processing any claim according to current Polish legislation.

5. ZMIE ZAMEL SP. J. shall process the claim at its own discretion: product repair, replacement  or money return. 

6. The manufacturer’s guarantee is valid in the Republic of Poland.

7. The PURCHASER’s  statutory rights in any applicable legislation whether against the retailer arising from the purchase contract or 

otherwise are not affected by this warranty.

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