MSA PS-303 Series User manual

Limited Liability Company
«NPK MORSVYAZAVTOMATICA»
26E, Kibalchicha str., 192174,
St. Petersburg, Russia
[email protected]
www.unicont.com
Phone.: [phone]
Fax: [phone]
POWER SUPPLY UNIT
PS-303
Operating manual

Operating Manual
2
TABLE OF CONTENTS
INTRODUCTION.........................................................................................................................3
1DESCRIPTION AND OPERATION OF THE PRODUCT...............................................4
1.1 DESCRIPTION.......................................................................................................................4
1.2 MAIN TECHNICAL SPECIFICATIONS...........................................................................4
1.3 STRUCTURE AND OPERATION OF THE PRODUCT..................................................8
1.4 MEASUREMENT INSTRUMENTS, TOOLS AND APPLIANCES..............................10
1.5 MARKING AND SEALING................................................................................................10
1.6 PACKAGING........................................................................................................................10
2INTENDED USE OF THE PRODUCT..............................................................................11
2.1 OPERATIONAL CONSTRAINTS.....................................................................................11
2.2 USAGE PREPARATIONS..................................................................................................11
2.3 USAGE OF THE PRODUCT..............................................................................................12
3TECHNICAL SERVICE OF THE PRODUCT.................................................................13
3.1 GENERAL DESCRIPTION................................................................................................13
3.2 SAFETY FEATURES ..........................................................................................................13
3.3 MAINTENANCE ROUTINE..............................................................................................13
3.4 PRESERVATION.................................................................................................................15
4CURRENT REPAIR OF THE PRODUCT........................................................................16
5STORAGE.............................................................................................................................17
6TRANSPORTATION...........................................................................................................18
7DISPOSAL.............................................................................................................................19
ANNEX A (MANDATORY) OUTLINE AND INSTALLATION DIMENSIONS...............20
ANNEX B (MANDATORY) STRUCTURAL DIAGRAMS OF PRODUCT TYPES..........21

Power Supply unit
PS-303
3
INTRODUCTION
This operating manual (hereinafter referred to as OM) is intended to describe the
structure, operating principles, technical specifications and service of Power supply
units PS-303 (hereinafter referred to as the Product, the PSU).
In addition to the instructions given in this document, the safety regulations and
rules applicable in the field shall be observed.
Only those who have read and understood this document and those who have
had special training shall be permitted to operate with the Product according to the ap-
plicable regulations.
Terms and abbreviations:
OM –operating manual;
TS –technical service;
PSU –power supply unit PS-303;
SC –short circuit;
CL –check list;
LFSG –large fine-pored silica gel granular.

Operating Manual
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1DESCRIPTION AND OPERATION OF THE PRODUCT
1.1 DESCRIPTION
The PSU operates with AC single-phase mains, 50 (60) Hz, voltage 220 V or
12 V DC or 24 V DC and provides stabilized power supply 12 V DC or 24 V DC to dif-
ferent shipborne and industrial equipment.
1.2 MAIN TECHNICAL SPECIFICATIONS
The Product provides:
a) power supply from AC power mains, frequency 50 (60) Hz with rated volt-
age 220 V or DC with rated voltage 24 V, or standby DC network with rated volt-
age 12 V or 24 V;
b)automatic switchover to standby power in case of main power failure and vice
versa;
c) output contacts protection against SC.
Technical specifications and used fuses are represented in Tables 1, 2.

Power Supply unit PS-303
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Table 1 –General technical specifications of the Product’s types
Characteristics
PS-303-А2-2 (4.2 А)
PS-303-А2-2 (6.5 А)
PS-303-А2-2 (12.5 А)
PS-303-А2-1 (8.5 А)
PS-303-А1-1 (12.5 А)
PS-303-А1-1 (18.5 А)
PS-303-22-1 (8.5 А)
PS-303-22-2 (4.2 А)
PS-303-22-2 (14.6 А)
PS-303-21-1 (12.5 А)
PS-303-21-1 (27.5 А)
PS-303-11-1(8.5 А)
Input voltage (main), V
220 (198…242)*, AC, frequency 50 (60) Hz
24 (19…36)*, DC
Input voltage (standby), V DC
24 (19…36)*
12 (9…18)*
24 (19…36)*
12 (9…18)*
Output voltage, V DC
24
24
24
12
12
12
12
24
24
12
12
12
Subtype
See Figures В.1–В.4
А
B
B
А
B
B
C
C
D
D
D
D
Pulses, mV
150
240
150
120
150
150
150
150
150
150
150
120
Output power, W
90
120
315
75
120
315
75
75
252
75
252
60
Efficiency, %
≈ 68
≈ 89
≈ 88
≈ 75
≈ 87
≈ 85
≈ 58
≈ 59
≈ 80
≈ 75
≈ 83
≈ 82
Galvanic isolation from power
mains
+
+
+
+
+
+
+
+
+
+
+
+
Galvanic isolation from standby
mains
+
-
-
+
-
-
+
+
-
-
-
-
Switchover to standby power
automatic (automatic restoration in case of power recovery)
Built-in protection
-load SC;
-current overload (fuses);
-reverse polarity (fuses)
LEDs
-main power;
-power from standby source
Overall dimensions, mm
288.0 ×278.5 ×100.3
Operating temperature, °C
–15…+55
Limiting temperature, °C
–60…+70

Operating Manual
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Characteristics
PS-303-А2-2 (4.2 А)
PS-303-А2-2 (6.5 А)
PS-303-А2-2 (12.5 А)
PS-303-А2-1 (8.5 А)
PS-303-А1-1 (12.5 А)
PS-303-А1-1 (18.5 А)
PS-303-22-1 (8.5 А)
PS-303-22-2 (4.2 А)
PS-303-22-2 (14.6 А)
PS-303-21-1 (12.5 А)
PS-303-21-1 (27.5 А)
PS-303-11-1(8.5 А)
Weight, kg
4.5
Protection degree
IP22
Notes
1 If external alarm unit AU-106 (AU-206) is connected, it ensures sound and light signaling in case of main-standby power transfer. Arrange external
alarm unit AU-106 (AU-206) at order (it is not included in the scope of delivery).
2 «*» - power voltage range is given in parenthesis.

Power Supply unit PS-303
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Table 2 –Number of fuses for the Product types
Fuses
PS-303-А2-2 (4.2 А)
PS-303-А2-2 (6.5 А)
PS-303-А2-2 (12.5 А)
PS-303-А2-1 (8.5 А)
PS-303-А1-1 (12.5 А)
PS-303-А1-1 (18.5 А)
PS-303-22-1 (8.5 А)
PS-303-22-2 (4.2 А)
PS-303-22-2 (14.6 А)
PS-303-21-1 (12.5 А)
PS-303-21-1 (27.5 А)
PS-303-11-1(8.5 А)
Automotive fuse 5 А
1
-
-
-
-
-
2
2
-
-
-
-
Automotive fuse 10 А
-
1
-
1
-
-
-
-
-
2
-
2
Automotive fuse 15 А
-
-
1
-
1
-
-
-
2
-
1
-
Automotive fuse 20 А
-
-
-
-
-
-
-
-
-
-
-
-
Automotive fuse 25 А
-
-
-
-
-
-
-
-
-
-
1
-
Automotive fuse 30 А
-
-
-
-
-
1
-
-
-
-
-
-
Fuse 5х20 mm, 2 А
1
1
-
1
1
-
-
-
-
-
-
-
Fuse 5х20 mm, 3 А
-
-
1
-
-
1
-
-
-
-
-
-

Operating Manual
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1.3 STRUCTURE AND OPERATION OF THE PRODUCT
1.3.1 General description
The PSUs are produced in metal casing; a piano type switch (On/Off) is located
on the Product casing.
1.3.2 Controls and LEDs
The Product’s layout of main functional elements, controls and LEDs is repre-
sented in Figure 1.
Figure 1 –The Product layout
The Product’s main functional elements, controls and LEDs are located on the
casing; for more data on their assignment, see Table 3.

Power Supply unit
PS-303
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Table 3 –Assignment of functional elements, controls and LEDs
№
Element
Type, size and identifier
Description
1
Piano type switch
–
Piano type switch (PSU’s
power supply On/Off)
2
LED
«Main»
Main power availability
3
«Standby»
Standby bower availability
4
Fuse holder
Automotive
Fuse installation to protect
input circuit against overload
and SC
5
Fuse
6
Blank plug
–
Place to install fuse
7
Stud
М5х15
Main element of grounding
8
Cable gland
MG-20
Cable gland to connect main
and standby power and loads
Note –№ are shown in Figure 1.
1.3.3 The Product’s connection
Main and standby power is supplied to PSU terminals to ensure failure-free op-
eration of the connected equipment. Connection diagram and description of connector
terminals are represented in Figure 2 and Table 4.
Figure 2 –Connection diagram of the Product
Table 4 –Description of the Product’s connector terminals
Connector
Terminal
№
Description
Х1
1
To connect main power 220 V 50 Hz or 24 V DC
2
3
To connect standby power
12 V; 24 V DC
4
Х11
1
2