Vertiv Liebert APM 300, Руководство пользователя

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Chapter 3 Electrical Installation 19
APM 300 Integrated UPS Single Module And Parallel System User Manual
for the installation engineer. The qualified installation engineer should have the knowledge of the local wiring
regulations on the equipment to be installed.
Rectifier and bypass input supply of the UPS
1. Overcurrent
Install suitable protective devices in the distribution of the incoming mains supply, considering the power
cable current-carrying capacity and overload capacity of the system (see Table 11-6, Table 11-7). Generally,
thermomagnetic circuit breaker with IEC60947-2 tripping curve C (normal) at 125% of the current listed in
Table 3-1 is recommended.
Split bypass: In case a split bypass is used, separate protective devices should be installed for the rectifier input
and bypass input in the incoming mains distribution panel.
The rated voltage of the external main/bypass overcurrent protective device should not be less than 415Vac,
and its AC breaking current should be more than 6kA, and it should be a 3P device for three phases.
Note
The UPS output neutral line is from the input neutral line. If the external block device blocks input neutral line, the
output neutral line will be lost, and then the system risk may be caused.
2. Earth leakage
The residual earth current introduced by the RFI suppression filter inside the UPS is greater than 3.5mA and
less than 1000mA. It is recommended that the sensitivity of all differential devices be verified upstream of the
input distribution panel.
3. Battery
A battery protective device (for example, a fuse or a breaker) must be fitted to provide overcurrent protection
for the 4. The rated voltage of the overcurrent protective device of the external battery should be higher than
500Vdc, and its DC breaking current should be higher than 20kA.
4. UPS Output
The UPS output distribution shall be configured with a protective device. The protective device shall be
different from the input distribution protection switch and able to provide overload protection (refer to
Table 11-6).
3.1.8 Connecting Power Cables
For cable access mode of the UPS, refer to 2.4.3 Cable Entry .
Warning
The power cables should be routed through cable tunnel or metallic cable trough to avoid being damaged under
mechanical stress and reduce EMI to the environment.
The procedures for connecting the parallel power cables are as follows:
1. Remove the cover at the front and the left side panel of the main power cabinet.
2. The parallel power cables have been connected in factory to the copper bars in the upper part and lower
part of the switch cabinet, as shown in Figure 3-1. Run the parallel power cables into the main power cabinet
by the cabling route shown in Figure 3-1 to the corresponding connection terminals.
3. According to the labels of the parallel power cables and those of the corresponding connection terminals of
the main power cabinet, use the accessory M8
×
25 screws and M8 nuts to connect the cables to the
connection terminals with the same labels correspondingly, and tighten the connections to 13N.m. Note that
each connection terminal should be connected to two cables.