Narada NPFC Series, Руководство по эксплуатации

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16 16 Part Part 4 4
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Operation & Maintenance Operation & Maintenance
LiFePO LiFePO
4 4
Battery Battery Module Module for for Telecom Telecom Operation Operation Manual Manual
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Length of cable between battery module and power plant shall be less Length of cable between battery module and power plant shall be less than 2.0m. than 2.0m.
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Color for cable between ‘+’ and positive female bar is suggested as red, and cable Color for cable between ‘+’ and positive female bar is suggested as red, and cable
between ‘ between ‘
--
’ and negative breaker or fuse as black. ’ and negative breaker or fuse as black.
4) Power on for battery module 4) Power on for battery module
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When installation is accomplished, battery module is in dormant state. Once power on When installation is accomplished, battery module is in dormant state. Once power on
for power plant, battery module will for power plant, battery module will go into normal running go into normal running status, and discharge/charge status, and discharge/charge
can be available. can be available.
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Parameter settings for lithium battery modules Parameter settings for lithium battery modules in power plant in power plant are shown in Table 4.2. are shown in Table 4.2.
5) RS232/RS485 connection 5) RS232/RS485 connection
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If there is only one If there is only one battery module in operation, communication between battery module battery module in operation, communication between battery module
and upper computer can available through both RS232 and RS485. and upper computer can available through both RS232 and RS485.
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If there are more than one battery modules in operation, parallel communication can be If there are more than one battery modules in operation, parallel communication can be
available using RS485. available using RS485.
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Communication protocols for RS232 and RS485 are shown in Communication protocols for RS232 and RS485 are shown in Annex 3. Annex 3.
6) Discharge with dummy load 6) Discharge with dummy load
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Dummy load cannot be larger maximum discharge current of each battery model in Dummy load cannot be larger maximum discharge current of each battery model in
Table 2.1, and LVBD is larger than 40.5V. Table 2.1, and LVBD is larger than 40.5V.
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Voltage drop on cable between battery module and power plant shall be less than 0.5V. Voltage drop on cable between battery module and power plant shall be less than 0.5V.
Method of calculation for cross Method of calculation for cross sectional area of cable is sectional area of cable is shown as below. shown as below.
A=ΣI×L/ A=ΣI×L/
（ （
K× K×
△ △
U U
） ）
In the above formula, A is across sectional area of wire (mm2), ΣI is the total current In the above formula, A is across sectional area of wire (mm2), ΣI is the total current
(A), L is length of cable, (A), L is length of cable,
△ △
U is the permit voltage drop on cable (V), and K is electrical U is the permit voltage drop on cable (V), and K is electrical
conductivity of wire. For example, for copper, K = 57 conductivity of wire. For example, for copper, K = 57
。 。
4.5 4.5
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Maintenance Maintenance
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The battery shall be recharged every three months if in long time storage The battery shall be recharged every three months if in long time storage
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Please clean the dust by the dust collector when dust is accumulated on vent Please clean the dust by the dust collector when dust is accumulated on vent
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Please use clean and dry cloth/fabric to clean up the cabinet, if need further Please use clean and dry cloth/fabric to clean up the cabinet, if need further
cleaning, please use neutral cleanser. Alcohol or ammonia synthesis is cleaning, please use neutral cleanser. Alcohol or ammonia synthesis is
forbidden. forbidden.
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Carrying shall be handled gently, prevent from severe compact Carrying shall be handled gently, prevent from severe compact
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Prevent battery from splashing liquid Prevent battery from splashing liquid
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Suggest inspect the tighten of output screw every two years Suggest inspect the tighten of output screw every two years