Power supply of the “fireman's microphone” ZSP25-E-MS ...

2 

Power supply for fire detection and fire alarm 

systems, smoke and heat control systems, and other fire 

protection systems, series ZSP135-DR 

The power supply is a guaranteed source of 24V voltage. The wall box is outfitted with a lock and has space for two batteries. The 

built-in breaker supervised by the controller protects the internal battery bank against too deep discharge. 

The power supplies are devoted to devices of: 

• fire detection and fire alarm systems according to EN 54-4/A2 

• smoke and heat control systems according to EN 12101-10 

• other fire protection systems, in particular as stipulated in section 12.2 of the Ordinance of the Polish Minister of Interior and 

Administration on 20.6.2007 (Dz.U. nr 143, poz. 1002, thereafter referred to as the Ordinance) 

The power supplies comply with EU directives: CPD (constructive products) 89/106/EEC, LVD (low voltage devices) 206/95/EC, EMC 

(electromagnetic compatibility) 204/108/EC. 

FUNCTIONS OF THE DEVICE 

• uninterruptible 24V power supply 

• monitoring of the mains voltage – indication of a fault 

• battery test 

• monitoring of resistance (thus also continuity) of the 

battery circuit 

• monitoring of the rectifier’s operation 

• full monitoring of the charging process and state of 

charge of batteries 

The power supply monitors the resistance of the battery 

circuit – this feature is obligatory after August 31, 2009 

(the standard EN 54-4/A2). 

The power supply simultaneously complies with both 

EN 54-4 and EN 12101-10 (as well as with the 

Ordinance), thus one model of the power supply can 

serve diverse fire protection systems. 

INDIVIDUAL PARAMETERS 

• floating mode with temperature compensation 

• fast charging of the battery with the charging current limitation 

• protection of the batteries against too deep discharge 

• monitoring of the battery fuse 

• monitoring of fuses of both outputs 

• monitoring of the internal temperature 

• visual and remote indication of alarms 

The power supply has the 

certificate of compliance 

issued by CNBOP 

No. 1438/CPD/0163 and 

the certificate of approval 

No. 583/DC/CNBOP/2009 

Index 

Maximal output 

current Imax b 

Nominal output 

current Imax a 

Maximal battery 

capacity 

Dimensions 

(WxHxD), mm 

Weight with 

batteries 

ZSP135-DR-2A-1 2.0A 1.0A 18Ah 390x350x90 18kg 

ZSP135-DR-3A-1 


3.0A 

2.0A 

1.5A 

18Ah 

28Ah 

390x350x90 

390x350x140 

18kg 

28kg 

ZSP135-DR-5A-1 4.0A 18Ah 390x350x90 18kg 

ZSP135-DR-5A-2 5.0A 

3.5A 28Ah 390x350x140 28kg 


3.0A 40Ah 450x350x180 42kg 

ZSP135-DR-7A-1 6.0A 18Ah 390x350x90 18kg 

ZSP135-DR-7A-2 7.0A 

5.5A 28Ah 390x350x140 28kg 


5.0A 40Ah 450x350x180 42kg

COMMON PARAMETERS 

Input 

Voltage 

Output 

Floating mode voltage (25ºC) 

Output voltage range 

Operational environment 

Working temperature range 

Resistance to corrosion 

Sinusoidal vibration 10…50Hz 

50…150Hz 

Ingress protection EN 60529 

Functional class EN 12101-10 

Environmental class EN 12101-10 

Environmental class, the Ordinance 

General 

Efficiency 

Temperature compensation coefficient 

Cooling 

Quiescent current 

Max. resistance of the battery circuit 

Max. battery charging current 

Standard compliance 

Electrical safety 

EMC immunity 

EMC interferences 

Tester of the power supplies ZSP135 

ZSP135-TST 

The tester ZSP135-TST is a portable device to carry out a fast check of all power supplies of series ZSP135-D and ZSP135-DR during their 

operation. The tester doesn’t need separate power supply. It is connected to the maintenance socket, available in each power supply. 

The tester is a tool for personnel responsible for set-up and maintenance. It helps to diagnose the power supply and to find a cause of a 

malfunction without dismounting the power supply. 

CHARACTERISTIC FEATURES 

• handy casing 

• powered by ZSP135-D or ZSP135-DR 

• direct connection to the tested power supply 

• possibility to force the battery test 

• LCD to show measured values 


• diagnostics and check of parameters of the power supply and 

the battery bank 

ul. Toruńska 8, 44-122 Gliwice, Poland, phone +48 32 23 99 400, fax +48 32 23 99 409 • www.merawex.com.pl 

184…230…253 

26.8V 

20…28V 

-25ºC...+55ºC, +75ºC over 2h 

25 ppm SO 2 at +25º and 93% humidity 

1g 

3g 

IP 43 

A 

2 

I 

min 77…82% 

-48mV/ ºC 

convection 

max 35mA 

250mΩ 

2A 

EN 60950-1 class I 

EN 50130-4/A2 

The Ordinance, section 12.2.2.2 a ÷ g 

Radio disturbance EN 55022/A1 level B 

harmonic EN 61000-3-2 

fluctuations EN 61000-3-3 

• indications: 

- battery voltage 

- output voltage 

- battery charging current 

- time to wait until the next battery test and the voltage of the 

last performed test 

- value of the resistance of the battery circuit (ZSP135-DR only) 

- temperature inside the box 

• check of continuity of the battery circuit 

3

4 

Power supplies of voice alarming systems 

ZDSO400 

Voice alarming systems require a guaranteed source of voltage to ensure supply of power over a specified duration needed by 

efficient evacuation from endangered zones. 

MERAWEX has developed and manufactures power supplies of series ZDSO400 for voice alarming systems Praesideo and Plena by 

Bosch, and Sinaps by Ultrak and Honeywell. A standard 19” rack cabinet of height up to 50U forms the main frame of the system to 

host not only elements of the power supply, but also elements of the voice alarming system (amplifiers, controllers, etc.). The power 

system takes care about supplying the mains (primary) power as well as the backup power of 24V or 48V from own battery banks. 

The battery banks are protected against too deep discharge. It is possible to apply a single rack or a set of a few racks – the system 

allows for operation in a distributed mode. Reliability of the system can be improved by adding a supplementary power supply unit 

which can be used also to increase charging current. The power supplies ZDSO400 comply with EU directives: CPD (constructive 

products) 89/106/EEC, LVD (low voltage devices) 206/95/EC, EMC (electromagnetic compatibility) 204/108/EC. 

FEATURES AND FUNCTIONS OF THE POWER SUPPLY 

ZDSO400 

• no limitation as for the number of rack cabinets in the system 

• distribution of the mains and backup power to the modules of 

the voice alarming systems 

• alarming in case of detected malfunctions of the system 

• possibility to connect with a fire alarm control panel 

• precise regulation of floating mode voltage – temperature 

compensation 

• fast charging of the battery with the charging current limitation 

• monitoring of low and high battery voltage 

• monitoring of continuity of battery circuits and protection of 

batteries against too deep discharge 

• surge protection of the mains line 

• visual, sound and remote indication of alarms 

• history of events recorded in non volatile memory 

• wheels as optional outfit of the cabinet 

indication of high resistance of the battery bank 

and circuits connected to it 

Having conducted supplementary tests against EN 54-4/A2, conformity and approval was 

recertified for the power supplies. 

certificate of conformity: certificate of approval: date: 

ZDSO400D-AK4 nr 2144/2006 0463/2008 19.10.2009 

ZDSO400E-AK3 nr 2157/2006 0343/2008 24.09.2009 

ZDSO400D-AK3 nr 1438/CPD/0129 0456/2008 24.09.2009 

According to the obligatory since September 1, 2009 amendment A2 to EN 54-4 the power supplies have 

been extended by a measuring set consisting of the battery resistance meter RMB-1 and DC meters 

CP-100 in each battery string. The requirement to monitor high resistance of the battery bank is included 

in the standard EN 54-16 for voice alarming systems too, because this standard refers to EN 54-4. 

Adjustment of the power supplies to the amendment A2 is the necessary and sufficient condition that 

complete voice alarming systems continue to comply with the technical approvals used in the process 

of their certification. The monitoring of resistance of the battery circuit (backup source of power) 

increases reliability of the power system, thus also reliability of the whole voice alarming system.

BASIC PARAMETERS 

Size of the system 

Type of the 19” rack cabinet 

Usable height of the rack 

Number of amplifiers of the voice alarming systems 

Primary power (mains) 

Input voltage 

Surge protection of the mains line 

General 


Cooling 

Ingress protection 

Weight after setup 

Standard compliance 


EMC immunity 


Power supply of the “fireman’s microphone” 

ZSP25-E-MS / ZSP25-D-MS 

The power supply is devoted to uninterruptible supply of power to a stand with the microphone operated by a fireman in distributed 

systems of voice alarming. It was designed in a wall box with a lock to protect against access by unauthorized persons. The box can 

be unlocked by a standard light fireman’s axe. Backup of output voltage after a mains failure: 24h of standby, 0.5h of alarm. 


600x600 or 800x600 

min 24U max 50U 

depending on the rack 

1 phase 230V +10% -15% or 3 phases 3x230V/400V +10% -15% 

class III (D) 3kA 

-5…+40°C 

forced 

IP30 

depending on the rack and configuration 


EN 50130-4/A2 

The Ordinance, section 12.2.2.2 a ÷ g 




The power supplies ZSP25-E-MS and 

ZSP25-D-MS are integrated parts of the 

voice alarming systems Praesideo and 

Sinaps, respectively, certified by CNBOP. 

5

6 

Versatile modular power supplies of series Cameleon 

Versatile modular power supplies CAMELEON are a family of products of unified construction and power in the range between 

150 and 600W. The standard voltage converters are offered independently as single output power supplies or are the basis for 

power supplies with supplementary functions. Basic voltage versions are: 12, 24 and 48V. Other versions are available on request. 

The single output power supplies can be used to power fiber optic interfaces or other devices in voice alarming systems. For 

uninterruptible operation of the powered equipment the battery backup version of the CAMELEON power supply is recommended to 

use. The version of the battery backup devices with monitoring of the battery has functionality complying with the standard 

EN 54-4 applicable in systems of fire detection and alarming. 

AVAILABLE VOLTAGES AND CURRENTS 

Nominal 

output 

voltage 

BASIC PARAMETERS OF POWER SUPPLIES 

Input 

Voltage 

Frequency 

Power factor 

General 

Efficiency 



Nominal output current (power) 

12V 10A (125W) 12A (150W) 16A (200W) 24A (300W) 32A (400W) 

24V 6A (150W) 8A (200W) 12A (300W) 16A (400W) 24A (600W) 

48V 3A (150W) 4A (200W) 6A (300W) 8A (400W) 12A (600W) 

* - power supplies without PFC can operate in the range of 187... 297Vdc 

CREATION OF THE INDEX OF THE POWER SUPPLY 

ZM 24V 12A - 300 B - 00 

Nominal output voltage 

Attention: 

The floating mode voltage is preset in power 

supplies to cooperate with batteries 

Nominal output current 

Attention: 

The available output current of power supplies 

to cooperate with batteries is decreased 

by the charging current 

Construction discriminant 

151, 201, 301 – no PFC 

200, 300, 400, 600 – with PFC 

184..230..253V AC or 165 ..220..297VDC* 

47..53 Hz 

0.95 

up to 87% 

-33°C...+70°C 

IP20 

Installation version 

00 – screw terminals 

10 – sockets and plugs 

Built-in function 

none – single output power supply 

R – parallel work 

B – cooperation with a battery bank 

P – cooperation with a battery bank and monitoring 

of its state (compliance with EN 54-4) 

A – cooperation with a battery bank and monitoring 

of its state, incl. high resistance 

(compliance with EN 54-4/A2) 

S – custom made power supply

Battery backup power supplies in wall boxes CAMELEON BOX 

The power supplies Cameleon Box are dedicated to supply guaranteed DC voltage 12V, 24V or 48V up to 300W of power. The wall 

box is outfitted with a lock and three cable transits, and has space to mount batteries. 


• LEDs indicating the state of operation (POWER, BATTERY) 

• overload protection of outputs and battery 

• protection of the batteries against too deep discharge (LVDD) 

• floating mode with temperature compensation (internal temperature probe) 

• possibility to input an external alarm (option) 

optional indication of the state of primary and separately of secondary power – LEDs on the box door and relays 

BASIC PARAMETERS 

Input 

Voltage 

Frequency 

Power factor 

Backup power source 

Nominal voltage of VRLA batteries 

Maximal capacity of the battery bank 

General 

Output power 

Efficiency 



* - power supplies of power up to 150W operate at voltage within the range of 187 ... 297Vdc 

** - for power supplies of power of 200 : 300W 

CREATION OF THE INDEX OF THE POWER SUPPLY 

Box dimensions: 

1B – 390x350x90 

2B – 390x350x140 

3B – 450x350x180 

ZMS - 1B - 12V - 10A 

Nominal output current 


184..230..253VAC, 165..220..297VDC* 

47..53Hz 

0.95** 

12V 24V 48V 

80Ah 40Ah 12Ah 

120÷300W 

up to 87% 

-33°C..+55°C 

IP43 

Attention: 

The output current is decreased by the charging 

current. 

Nominal output voltage 

(12V, 24V, 48V) 

Attention: 

The floating mode voltage is preset. 

7

8 

Multi-output power supplies for CCTV 

ZW 

The power supplies are dedicated to supply DC voltage of 12V to CCTV cameras. Depending on version a unit can power up to 16 

cameras independently. The power supplies are designed as wall boxes with mounted one or two power modules (MZ), and one 

or two output modules (MW). 


• regulated output voltage 

• easy scalability of the number of outputs 

• light compact construction (up to 2 kg) 

TABLE OF VERSIONS 

Index 

Number of outputs 

Type 

of protection 

Description 

Number of outputs – number of protected outputs of the power supply 

Type of protection – type of output protection 

T – fuse 

P – polyswitch 

Varistors 

Relay 

• LEDs indicating proper operation of each output 

• protection against overload or short circuit (fuse or polyswitch) 

• relay indicating proper operation (option) 

• surge protection of each output line (option) 

Index 


Type 


ZW4-A T ZW12-A T 

ZW4-AW T х ZW12-AW T х 

ZW4-AP T х ZW12-AP T х 

ZW4-APW 

ZW4-B 

4 

T 

P 

х х ZW12-APW 

ZW12-B 

12 

T 

P 

х х 

ZW4-BW P х ZW12-BW P х 

ZW4-BP P х ZW12-BP P х 

ZW4-BPW 

P х х ZW12-BPW 

P х х 

ZW8-A T ZW16-A T 

ZW8-AW T х ZW16-AW T х 

ZW8-AP T х ZW16-AP T х 

ZW8-APW 

ZW8-B 

8 

T 

P 

х х ZW16-APW 

ZW16-B 

16 

T 

P 

х х 

ZW8-BW P х ZW16-BW P х 

ZW8-BP P х ZW16-BP P х 

ZW8-BPW 

P х х ZW16-BPW 

P х х 

Varistors 

Relay 

Varistors – outputs of output modules are protected additionally by 

varistors 

Relay – a relay to indicate 12V voltage failure (three contacts)

TABLE OF VERSIONS OF OUTPUT MODULES MW 

Index 


Type 


Adapters 12V 

Varistors 

Relay 

Index 

Type 


MW4-A T MW8-A T 

MW4-AW T х MW8-AW T х 

MW4-AP T х MW8-AP T х 

MW4-APW 

MW4-B 

4 

T 

P 

х х MW8-APW 

MW8-B 

8 

T 

P 

х х 

MW4-BW P х MW8-BW P х 

MW4-BP P х MW8-BP P х 

MW4-BPW 

P х х MW8-BPW 

P х х 

BASIC PARAMETERS OF THE POWER SUPPLY 

Input 

Voltage 

Output 

Voltage 


Maximal current 

Power 


Allowable working temperature 

Allowable working humidity 


EMC immunity 



The adapters to supply DC voltage of 12V to IT and telecom equipment, devices of industrial automation and CCTV. They are outfitted 

with 180cm of cable terminated by a 5.5/2.1 plug. 


Input 

Voltage 

Output 

100...240Vac 

Voltage 12Vdc 

Current 1250 mA 


Allowable working temperature -10°C...+40°C 

Allowable working humidity 

Compliance with safety requirements 

20%...90% 

Electrical safety EN 60950-1, protection class II 

Level of EMC interferences class B (EN 55022) 

Varistors 

Relay 

TABLE OF VERSIONS 

OF POWER MODULES MZ 

Index Description 

MZ-1 

To cooperate with output 

modules MW4 

MZ-2 

To cooperate with output 

modules MW8 

230Vac +10% -15% 

12Vdc 

4, 8, 12 or 16 

0.5A for each output (1A versions on request) 

25W…130W 

-10ºC ...+40ºC 

20% …90% 


EN 61000-3-2, EN 61000-4-2/-3/-4/-5/-6/-8/-11 





9

10 

Power supplies to cooperate with batteries 

EL25, EL50 

The power supplies EL25 and EL50 are a regulated source of DC voltage, power of 25W and 50W, respectively. They are constant 

frequency switching power supplies. They are devoted to cooperate with a battery bank connected as a buffer. 


• UI output characteristic 

• protection against overload or short circuit 

• visual indication of presence of output voltage 

• indication of battery mode 

• indication of low battery 

• possibility to cut off the load from output voltage 


• charging current limitation 

• protection of the battery bank against too deep discharge 

• possibility to switch the unit on from the battery – “cold start” 

AGM batteries 

Maintenance free batteries are used to cooperate with battery backup power supplies. We offer maintenance free batteries of the 

following brands: Panasonic, Europower, SSB, Acumax and Alarmtec. Because of gas recombination there is no need to replace 

electrolyte, and batteries can be applied in rooms without dedicated forced ventilation . 

FEATURES 

• AGM technology 

• design life up to 15 years 

• voltage of single monoblocks: 2V, 6V i 12V 

• range of capacity from 0.8 to 300Ah 

• small internal resistance 

• operation possible in arbitrary orientation 

• broad range of working temperature 

• DIN rail clip 

• theoretical MTBF of 1.5 million hours (according to Telcordia SR- 

332, taking into account electrical stress of single elements) 

Input voltage 

184..230..253VAC (47 ÷ 63 Hz) 

Protection class Class I according to EN 60950-1 

Weight 0.35kg 

Dimensions (HxWxD) mm 

82 x 47 x 125 

EMC immunity 

EN 61000-3-2 EN 61000-4-2/-3/-4/-5/-6/-8/-11 





EL25-B EL25- D EL50-B EL50-D 

Output parameters 

Voltage 13.2V 26.4V 13.6V 27.2V 

Nominal current 1.4A 0.7A 2.8A 1.4A 

Output current limitation 2.0 ÷ 2.9A 1.0 ÷ 1.45A 4.0 ÷ 5.8A 2 ÷ 2.8A 

Charging current limitation 

0.5 ÷ 0.7A 0.25 ÷ 0.35A 1.0 ÷ 1.4A 0.5 ÷ 0.7A 

Voltage to indicate low battery 11.0 ÷ 11.9V 20.0 ÷ 23.8V 11.0 ÷ 11.9V 20.0 ÷ 23.8V 

Voltage to disconnect the battery bank 9.2 ÷ 10.4V 18.4 ÷ 20.8V 9.2 ÷ 10.4V 18.4 ÷ 20.8V 

___ 

APPLICATION 

• fire protection systems 

• emergency light 

• UPS 

• telecom power systems 

• backup power for industrial automation and control 

• solar panel systems 

• cash register and printers 

• mobile and portable devices

ZKS24-4 AC/AC power supplies in IP65 casing 

The AC/AC power supplies are dedicated to power speed dome cameras. Two outputs (24Vac or 27Vac) allow for choosing the voltage 

depending on the distance between the power supply and camera. The power supply is enclosed in a plastic casing (ABS) of ingress 

protection IP65, suitable for fixing to a wall. 


• small dimensions 

• IP65 casing 

• output voltage 24 and 27Vac 

• power 100VA 


Input power 

Voltage 

Frequency 

General 

Power 

Output voltage 

Output current 

Mechanical parameters 

Dimensions 

Weight 

* - both outputs can be loaded simultaneously up to total power of 100VA 

Battery backup power supplies in wall boxes 

The power supplies ZB EL25 and ZB EL50 are designed as wall boxes. They cooperate with a battery bank connected as a buffer. The power 

supplies indicate the battery mode and low battery. They are outfitted with charging current limitation and protection of the battery bank 

against too deep discharge. 


• light compact construction 

• output voltage 12 or 24Vdc 

• charging current limitation 

• protection of the battery bank against too deep discharge 

• possibility to switch the unit on from the battery 

Input power 

Voltage 

Frequency 

General 

Output voltage 

Maximal output current 

Space for batteries 

Mechanical parameters 

Dimensions 

Weight (without batteries) 

ZB EL25-B ZB EL25-D ZB EL50-B ZB EL50-D 

184…230…253 Vac 

47…63Hz 

13.2V 26.4V 13.6V 27.2V 

2A 1A 

4A 2A 

7.2Ah 2 x 5Ah 7.2Ah 2 x 5Ah 

157 x 118 x 76 mm 

~2.0 kg 


184…230…253 Vac 

50Hz 

100VA 

U1: 24Vac / U2: 27Vac 

4A for 24Vac or 3.7A for 27Vac* 

157 x 118 x 76 mm 

2.0 kg 

11

Power supply of the “fireman's microphone” ZSP25-E-MS ...

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