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NetSure 2100 A31-S2/S3 Subrack Power 

System User Manual 

1    Technical Parameters 

See Table 1-1 for the technical data of NetSure 2100 A31-S2/S3 subrack power system 
(power system for short). 

Table 1-1    Technical data 

Parameter 

category 

Parameter 

Description 

AC input 

System Input 

TN or TT, single-phase (L+N+PE) 

Rated input voltage 

220Vac 

Input voltage range 

85Vac ~ 300Vac (output derating below 

176Vac) 

Input frequency range 

45Hz ~ 65Hz 

Rated input frequency 

50Hz 

Maximum input current 

18.4A 

DC output 

Default output DC voltage 

-53.5Vdc 

Standard 

configuration 

output current 

0 ~ 52A   

Mechanical 

Dimension(W × D × H) 

43.6mm × 482mm × 240mm 

Subrack 

power 

system 

weight(kg) 

≤ 4kg (excluding rectifiers)

 

Rectifier weight (kg) 

≤ 0.6kg

 

Environmental 

Operating temperature 

-5°C  ~  +45°C,  45°C  ~  65°C  derating 

output 

Relative humidity 

≤ 90%RH (30°C)

 

Altitude 

≤3000m  (derating  is  necessary  above 

2000m,  the  max.  working  temperature 

is  lowered  by  1°C  for  every  200m 

increase in altitude) 

Over-voltage/pollution 

degree 

Over-voltage: II; Pollution degree: 2 

 

2    Installation 

2.1    Safety Regulations 

1. Only the adequately trained personnel with satisfactory knowledge of the power system 
can carry out the installation and maintenance. 

2. Prevent fire disaster and personnel injury. 

3. Provide AC power supply that meets the requirement to equipment. 

4. Make sure the equipment is well grounding. 

5. Keep the equipment clean and dry. 

6. Avoid of touching the bare parts of the circuit. 

7. In case of suspicious failure, only can carry out 'Off' operation, shall not carry out 'On' 
operation. 

8. It is strictly forbidden to stand or place objects on the equipment body and accessories. 

2.2    Preparation 

Unpacking inspection 

To inspect the equipment, you should open the packing case, take out the packing list and 
check against the packing list that the equipment is correct and complete. Make sure that 
the equipment is delivered intact. 

 

Note   

The rectifiers were installed in the subrack power system before delivery. If there are 
rectifiers configured in the order, the rectifiers will be installed in the subrack power 
system before delivery; if there is no rectifier configured in the order, then the subrack 
power system will not be installed with rectifier at factory. Customers need to install the 
rectifiers by themselves. 

 

Preparing cables 

The AC cable CSA should take into account the requirements like temperature rise, voltage 
drop, mechanical strength and the cable design should meet relevant industry standards. 
With cable length shorter than 30m, the CSA calculation should be based on the current 
density of 2.5A/mm

2

. The suggested CSA value is not more than 10mm

2

.

 

Select the DC load cable CSA according to the Table 2-1. 

Table 2-1    DC load cable CSA selection 

Load route rated 

current 

Max. output 

current 

Min. cable CSA 

Max cable length ( volt drop: 

0.5V with min. CSA)   

50A 

50A 

6mm

2

 

3.5m 

30A 

24A 

4mm

2

 

4.8m 

10A 

8A 

1.5mm

2

 

5.5m 

3A 

2.4A 

1.5mm

2

 

18.2m 

Note:  The  specs  are  applicable  at  ambient  temperature  of  40°C.  If  the  temperature  is 

higher than this, the CSA of the cable should be increased. The maximal cable CSA should 

not larger than 10mm

2

 

 

The CSA of DC cable depends on the current flowing through the cable, the allowable 
voltage drop and the load peak capacity. The recommended load peak capacity is 1/2 to 
2/3 of the MCB/fuse capacity.   

The CSA of grounding cable should not less than 2.5mm

2

, and yellow-green double color 

cable is recommended. 

Determining subrack configuration 

NetSure 2100 A31-S2/S3 subrack can be accommodated with 1 ~ 3 rectifies, the actual 
configured rectifies are based on the order requirement. If the rectifier number is one, you 
need to select two dummy plate. If the rectifier number is two, you need to select one 
dummy plate. If the rectifier number is three, there is no need to select a dummy plate. 
The appearance of the rectifier is shown in Figure 2-1, the layout of the subrack panel is 
shown in Figure 2-2. 

 

Figure 2-1    Appearance of the dummy plate 

 

Rectifier 1

Rectifier 2

Dummy plate 21505957

 

Figure 2-2    Layout of subrack panel 

2.3    Installing Power System 

The power system can be installed in 19 inch rack. 

If rack mounting installation is used, firstly remove the two brackets, turn the bracket with 
the grounding screw to make the grounding screw facing forward, and then fasten the 
bracket to the front of the subrack left side wall, meanwhile, fix the other bracket after 
rotation to the front of the subrack right side wall. The position of the bracket is shown in 
Figure 2-3. Use the fixing screws to fasten the subrack power system to the rack through 
brackets. Strictly follow the direction shown in Figure 2-4 when installing the subrack 
power system. When carrying or installing the power system, it is prohibited to bottom up 
or turn over the power system. 

 

31.8

43.6

10.3

6.8

465

 

Figure 2-3    Installation dimension of subrack and brackets 

Correct installing and carrying direction: 

 

Figure 2-

4    19’’ rack installation

 

Wrong installing and carrying direction: 

Содержание NetSure 2100 A31-S2

Страница 1: ...drop mechanical strength and the cable design should meet relevant industry standards With cable length shorter than 30m the CSA calculation should be based on the current density of 2 5A mm2 The suggested CSA value is not more than 10mm2 Select the DC load cable CSA according to the Table 2 1 Table 2 1 DC load cable CSA selection Load route rated current Max output current Min cable CSA Max cable...

Страница 2: ... 3 MCB Load output route 4 MCB Load output route 4 MCB Load output route 3 MCB Load output route 2 MCB Load output route 1 MCB Battery input terminal Temp cable input port Figure 2 7 NetSure 2100 A31 S3 layout 2 4 1 Connecting Earth Cable A M6 grounding stud is reserved on the mounting bracket The grounding cable is yellow green double color cable with cable specification up to 10mm2 The cable end...

Страница 3: ...nd then insert the terminal into the controller front panel as shown in Figure 2 11 Users need to prepare signal cable themselves Table 2 2 Correlation of ports RS232 port DB9 port 1 Tx 2 2 Rx 3 3 GND 5 Connecting M831A dry contact output port The controller is configured with four pairs of alarm dry contact output DO1 DO4 as standard configuration and two routes of DI input and one route of RS485...

Страница 4: ...cal engineer can maintain and operate this equipment In operation the installation personnel are not allowed to wear conductive objects such as watches bracelets bangles and rings During operation parts of this equipment carry hazardous voltage Wrong operation may result in severe or fatal injuries and property damage Before the test Installation check must be done before testing Then the batterie...

Страница 5: ...Charge Shunt Number 1 String1 norminal capactity Batt Charge String1 norminal capactity 100Ah String1 rated current Batt Charge String1 rated current 75A String1 rated voltage Batt Charge String1 rated voltage 25mV Float voltage Batt Charge Float voltage 53 5V Boost voltage Batt Charge Boost voltage 56 4V LVD2 Enable LVD LVD2 Enable Enable LVD2 voltage LVD LVD2 voltage 43 2V Contactor type LVD Con...

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