MX2008 DC Power System
MX2008 Seven-Feed DC Power Distribution Module Description
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDM.
In the DC power configuration, the router contains up to two
DC PDMs located at the rear of the chassis in slots PDM0/Input0 and PDM1/Input1 (bottom to top). A minimum
of one PDM is required per system (two PDMs per MX2008 chassis) for
nonredundant power. The DC PDMs provides power interface to nine PSMs.
Four PDMs provide full redundancy.
Power backplane distributes regulated 52 VDC to all boards supplied by that system.
Each DC PDM has seven DC inputs (–48 VDC and return terminals for each input) (see Figure 1). Select 60 A or 80 A input feed capacity on the DC PDM by setting the switch to the rated amperage of DC power input feeds.
This switch applies to all inputs of this PDM. Selecting 60 A reduces the available power output capacity of the PSMs supplied by this PDM.
The type of feed that you use on the DC PDM (60 A or 80 A) depends on the distribution scheme and distribution equipment. With a 60-A feed, the maximum power supply output power is limited to 2100 W while the maximum power supply input power is limited to 2400 W. With an 80-A feed, the maximum power supply output is limited to 2500 W while maximum power supply input power is limited to 2800 W. The system power management software calculates the available and used power based on DIP switch positions in the PDM.
See also
MX2008 DC Power Distribution Module (-48 V) Description
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
In the DC power configuration, the router contains up to two
DC power distribution modules (PDMs) located at the rear of the chassis
in slots PDM0/Input0 and PDM1/Input1 (bottom to top). A minimum of one PDM is required per system (two
PDMs per chassis) for nonredundant power. The DC PDM provides a power
interface to nine power supply modules (PSMs).
Two PDMs provide full redundancy. In a redundant configuration, a total of fourteen 60-A or 80-A input feeds (7-feed DC PDMs), and a total of eighteen 60-A or 80-A input feeds (9-feed DC PDMs) are supported.
The power backplane for a subsystem distributes regulated 52 VDC to all boards supplied by that subsystem.
Each DC PDM has seven or nine DC inputs (–48 VDC and return terminals for each input). You can select 60-A or 80-A input feed capacity on the DC PDM by setting the DIP switch on the PDM to the rated amperage of the DC power input feeds.
The selected input capacity applies to all inputs of this PDM. Selecting 60 A reduces the available power output capacity of the PSMs supplied by this PDM.
Figure 3 shows the MX2008 DC PDM.
The type of feed that you use on the DC PDM (60-A or 80-A) depends on the distribution scheme and distribution equipment. With a 60-A feed, the maximum power supply output power is limited to 2100 W while the maximum power supply input power is limited to 2400 W. With an 80-A feed, the maximum power supply output is limited to 2500 W while the maximum power supply input power is limited to 2800 W. The system power management software calculates the available and used power based on DIP switch positions in the PDM.
See also
MX2000 DC Power Distribution Module (240 V China) Description
In the DC power configuration, the router contains up to two
DC power distribution modules (PDMs) located at the rear of the chassis
in slots PDM0/Input0 and PDM1/Input1 (bottom to top). A minimum of one PDM is required per system (two
PDMs per chassis) for nonredundant power. The DC PDM provides a power
interface to nine power supply modules (PSMs).
Two PDMs provide full redundancy for the router. In a redundant configuration, a total of a total of eighteen (9-feed DC PDMs) are supported.
The power backplane for a subsystem distributes regulated 52 VDC to all boards supplied by that subsystem.
Each DC PDM (240 V China) has nine DC inputs, (see Figure 4).
MX2008 DC Power Distribution Module (-48 V) LEDs
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
Each DC PDM faceplate contains one bicolor LED for each of the nine –48 V input power feeds, indicating the correct or incorrect polarity connection of each feed. See . Figure 5
Table 1: DC Power Distribution Module LEDs
Label | Color | State | Description |
|---|---|---|---|
| Green | On | RTN and –48V input feeds are connected. PDM is functioning normally. |
– | Off | RTN input feed is not connected or present. | |
–48V input feed is not connected or present. | |||
RTN and –48V input feeds are not connected. | |||
Red | On | RTN or –48V input feeds may be reversed, feed live. |
MX2000 DC Power Distribution Module (240 V China) LEDs
Each DC PDM (240 V China) faceplate contains one LED for each of the nine input power feeds, indicating the correct or incorrect polarity connection of each feed. See Figure 6 and Table 2 DC PDM (240 V China) LEDs.
1 — LED |
Table 2: DC Power Distribution Module (240 V China) LEDs
Color | State | Description |
|---|---|---|
Green | On | Positive and negative input feeds are connected. PDM is functioning normally. |
– | Off | Positive input feed is not connected or present. |
Negative input feed is not connected or present. |
MX2008 DC Power Supply Module (-48 V) Description
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
The MX2008 supports a DC power system. The DC power system operates
with feeds of 60 A or 80 A current limited. A total of nine
feeds are required to fully power the MX2008. Another nine feeds are
required to provide feed redundancy (a total of 18 60-A or 80-A feeds).
In the DC power configuration, the router contains up to nine DC PSMs
located at the rear of the chassis in slots PSM0 through PSM8, (left to right). The DC PSMs
in slots PSM0 through PSM8 provide power to the all router components including MPCs in slot 0 through 9, RCBs in slot 0 and 1, SFBs in slot 0 through 7, and fan trays 0 and 1.
The MX2008 systems configured for DC input power must use only DC PDMs and DC PSMs. You cannot mix AC and DC PSMs or PDMs within a single system.
Up to nine PSMs may be connected in parallel to increase available system power across MPCs as needed and provide redundancy. Figure 7 shows the DC PSM.
The DC power system is feed redundant. Each DC PSM can be connected
to two separate feeds from different sources that are used to provide
feed redundancy. If two feeds are connected, PSM input power is drawn
from the feed with the higher voltage present. There are two PDMs
per power system capable of carrying nine feeds each. Connect feeds
from one source to one PDM and feeds from the other source to the
second PDM of the power system. The primary input of the PSM is a
dual redundant feed, INP0 and INP1. Both feeds are active during operation, but both feeds might or
might not be providing current. Move the input mode DIP switch to
the on or off position to determine the power supply feeds (see Table 3 and Figure 8). In addition, a PSM failure
triggers the alarm LED on the craft interface. Each PDM has an LED
per feed indicating whether the feed is active or not, or whether
the feed is connected properly, see MX2008 DC Power (-48 V) System Electrical Specifications.
Table 3: DIP Switch Positions on the DC (-48 V) PSM
Left Switch Position | Right Switch Position | Input Source |
|---|---|---|
Off | Off | None |
On | Off | Input 0 ( |
Off | On | Input 1 ( |
On | On | Both Input 0 and Input 1 |
See also
MX2000 DC Power Supply Module (240 V China) Description
The MX2008 supports a DC power system. The 240 V China DC power
system operates with nine feeds. A total of nine feeds are required
to fully power the MX2008. Another nine feeds are required to provide
feed redundancy (a total of 18 feeds In the DC power configuration,
the router contains up to nine DC PSMs located at the rear of the
chassis in slots PSM0 through PSM8, (left to right). The DC PSMs in slots PSM0 through PSM8 provide power to the all router
components including MPCs in slot 0 through 9, RCBs in slot 0 and 1, SFBs in slot 0 through 7, and fan trays 0 and 1.
The MX2008 systems configured for DC (240 V China) input power must use only DC (240 V China) PDMs and DC PSMs. AC and DC PSMs or PDMs must not be mixed within a single system.
Up to nine PSMs may be connected in parallel to increase available system power across MPCs as needed and provide redundancy. Figure 7) shows the DC PSM.
The DC power system is feed redundant. Each DC PSM can be connected
to two separate feeds from different sources that are used to provide
feed redundancy. If two feeds are connected, PSM input power will
be drawn from the feed with the higher voltage present. There are
two PDMs per power subsystem capable of carrying nine feeds each.
Connect feeds from one source to one PDM and feeds from the other
source to the second PDM of the power subsystem. The primary input
of the PSM is a dual redundant feed, INP0 and INP1. Both feeds are active during operation, but both
feeds may or may not be providing current. Move the input mode DIP
switch to the on or off position to determine the power supply feeds
(see Table 3 and Figure 8). In addition, a PSM failure
triggers the alarm LED on the craft interface. Each PDM has an LED
per feed indicating whether the feed is active or not, or whether
the feed is connected properly, see MX2008 Router DC (240 V China) System Electrical Specifications.
Table 4: DIP Switch Positions on the DC (240 V China) PSM
Left Switch Position | Right Switch Position | Input Source |
|---|---|---|
Off | Off | None |
On | Off | Input 0 ( |
Off | On | Input 1 ( |
On | On | Both Input 0 and Input 1 |
MX2008 DC Power Supply Module LEDs
Each DC PSM (-48 V and 240 China) faceplate contains four LEDs.
These LEDs are described in Table 5. Nine bicolor LEDs, labeled 0 through 8 for the nine PSMs, are located in the center of the
craft interface.
The primary input of the PSM is a dual redundant feed, INP0 and INP1. Both feeds are active
during operation, but both feeds might or might not be providing current.
In addition, a PSM failure triggers the alarm LED on the craft interface.
Table 5: MX2008 DC Power Supply Module LEDs
Label | Color | State | Description |
|---|---|---|---|
| Green | On | PSM is functioning normally with no alarms. |
Yellow | On | PSM controller is off with both | |
– | Off | PSM is not functioning normally or the PSM controller is off. | |
| Red | On | PSM is not functioning normally or the DC input voltage of one or more feeds is out of range. |
– | Off | PSM is functioning normally or both the DIP switches are set to off. | |
| Green | On | DC input is within required voltage range and the DIP switch is set to on. |
Yellow | On | DC input is detected but voltage is out of range. | |
– | Off | DC input to the PSM is not present. | |
| Green | On | DC input is within required voltage range and the DIP switch is set to on. |
Yellow | On | DC input is detected but voltage is out of range. | |
– | Off | DC input to the PSM is not present. |
See also
MX2008 DC Power Requirements
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
Table 6 lists the FRU power requirements for SFBs, RCBs, MPCs, and MICs. In addition, Table 6 lists the MPC power requirements with MICs and optics at various operating temperatures.
Typical power represents power under certain temperatures and normal operating conditions.
For PDMs with 60 A feeds, we recommend that you select the 60 A @ –48 VDC switch for each input.
For PDMs with 80 A feeds, we recommend that you select the 80 A @ –48 VDC switch for each input.
The 240 V China DC PDMs do not have a switch selection.
If you do not plan to provision as recommended above, you can use the information in Table 6 to calculate the power consumption for your hardware configuration.
Unlike all the other MPCs, MPC6E, MPC8E, and MPC9E does not require an adapter card (ADC) to house the MPC in the MX2008 router.
Table 6: FRU DC Power Requirements
Component | Model Number | Maximum Power Requirement |
|---|---|---|
| Switch Fabric Boards (SFBs) | ||
MX2008 SFB2 | MX2008-SFB2 | 100 W (Typical) 110 W at 55° C 100 W at 40° C 95 W at 25° C |
| Fan Trays | ||
Fan Trays | MX2000-FANTRAY-S | 1500 W (Typical) 1700 W at 55° C 1500 W at 40° C 350 W at 25° C |
| Adapter Cards | ||
ADC | MX2000-LC-ADAPTER | 150 W |
| Routing Control Board (RCB) | ||
RCB | REMX2008-X8-64G | 100 W (Typical) 120 W at 55° C 100 W at 40° C 95 W at 25° C |
| MPCs | ||
16x10GE MPC (seeMPC-3D-16XGE-SFPP) | MPC-3D-16XGE-SFPP | 440 W at 55° C ambient |
MPC1 (see MPC1) | MX-MPC1-3D MX-MPC1E-3D | 165 W With MICs and optics:239 W at 55° C 227 W at 40° C 219 W at 25° C |
MPC1 Q (see MPC1 Q) | MX-MPC1-3D-Q MX-MPC1E-3D-Q | 175 W With MICs and optics:249 W at 55° C 237 W at 40° C 228 W at 25° C |
MPC2 (see MPC2) | MX-MPC2-3D MX-MPC2E-3D | 274 W With MICs and optics:348 W at 55° C 329 W at 40° C 315 W at 25° C |
MPC2 Q (see MPC2 Q) MPC2 EQ (see MPC2 EQ) | MX-MPC2-3D-Q MX-MPC2-3D-EQ MX-MPC2E-3D-Q MX-MPC2E-3D-EQ | 294 W With MICs and optics:368 W at 55° C 347 W at 40° C 333 W at 25° C |
MCP2E P (see MPC2E P) | MX-MPC2E-3D-P | 294 W With MICs and optics:368 W at 55° C 347 W at 40° C 333 W at 25° C |
MPC3E (see MPC3E) | MX-MPC3E-3D | 440 W With MICs and optics:520 W at 55° C, two 40 W MICs 420 W at 40° C, two CFP MICs with LR4 optics 408 W at 25° C, two CFP MICs with LR4 optics |
32x10GE MPC4E (see 32x10GE MPC4E) | MX-MPC4E-3D-32XGE-SFPP | 610 W With MICs and optics:610 W at 55° C, two 40 W MICs 560 W at 40° C, two CFP MICs with LR4 optics 550 W at 25° C, two CFP MICs with LR4 optics |
2x100GE + 8x10GE MPC4E (see 2x100GE + 8x10GE MPC4E) | MX-MPC4E-2CGE-8XGE | 610 W With MICs and optics:610 W at 55° C, two 40 W MICs 550 W at 40° C, two CFP MICs with LR4 optics 530 W at 25° C, two CFP MICs with LR4 optics |
MPC5E-40G10G MPC5EQ-40G10G | With optics: 607 W at 55° C 541 W at 40° C 511 W at 25° C | |
MPC5E-100G10G MPC5EQ-100G10G | With optics: 607 W at 55° C 541 W at 40° C 511 W at 25° C | |
MX2K-MPC6E | 1088 W with MICs and optics | |
MPC7E-MRATE | 400 W (Typical) 545 W at 55° C 465 W at 40° C 440 W at 25° C | |
(without MICs) | MX2K-MPC8E | 688 W (Typical) 805 W at 55° C 720 W at 40° C 690 W at 25° C |
(without MICs) | MX2K-MPC9E | 838 W (Typical) 1018 W at 55° C 870 W at 40° C 840 W at 25° C |
| MICs | ||
ATM MIC with SFP | MIC-3D-8OC3-2OC12-ATM | 35 W |
Gigabit Ethernet MIC with SFP | MIC-3D-20-GE-SFP | 37 W |
10-Gigabit Ethernet MIC with XFP | 2-Port: MIC-3D-2XGE-XFP 4-Port: MIC-3D-4XGE-XFP | 2-Port: 29 W 4-Port: 37 W |
10-Gigabit Ethernet MIC with SFP+ | MIC6-10G | 74 W With optics:53 W at 55° C, 40° C and 25° C with 10G BASE-SR and 10G BASE-LR optics 66 W at 55° C, 40° C and 25° C with 10G BASE-ER optics 74 W at 55° C, 40° C and 25° C with 10G BASE-ZR optics |
10-Gigabit Ethernet DWDM OTN MIC | MIC6-10G-OTN | 84 W With optics:63 W at 55° C with 10G BASE-LR OTN optics 63 W at 40° C with 10G BASE-LR OTN optics 63 W at 25° C with 10G BASE-LR OTN optics |
40-Gigabit Ethernet MIC with QSFPP | MIC3-3D-2X40GE-QSFPP | 18 W |
100-Gigabit Ethernet MIC with CFP | MIC3-3D-1X100GE-CFP | 40 W |
100-Gigabit Ethernet MIC with CXP | MIC3-3D-1X100GE-CXP | 20 W |
100-Gigabit Ethernet MIC with CFP2 | MIC6-100G-CFP2 | 104 W With optics:94 W at 55° C with 100G BASE-LR4 OTN optics 86 W at 40° C with 100G BASE-LR4 OTN optics 74 W at 25° C with 100G BASE-LR4 OTN optics |
100-Gigabit Ethernet MIC with CXP | MIC6-100G-CXP | 57 W 49 W at 55° C with CXP SR10 optics 49 W at 40° C with CXP SR10 optics 49 W at 25° C with CXP SR10 optics |
100-Gigabit DWDM OTN MIC with CFP2 | MIC3-100G-DWDM | With optics: 91 W at 55° C 83 W at 25° C |
SONET/SDH OC3/STM1 Multi-Rate MIC | 4-Port: MIC-3D-4OC3OC12-1OC48 8-Port: MIC-3D-8OC3OC12-4OC48 | 4-Port: 24 W at 55° C 22.75 W at 40° C 21.5 W at 25° C 8-Port: 29 W at 55° C 27.75 W at 40° C 26.5 W at 25° C |
OC192/STM64 MIC with XFP | MIC-3D-1OC192-XFP | 41 W at 55° C 38.5 W at 40° C 36 W at 25° C |
Channelized SONET/SDH OC3/STM1 Multi-Rate MIC | 4-Port: MIC-3D-4CHOC3-2CHOC12 8-Port: MIC-3D-8CHOC3-4CHOC12 | 4-Port: 41 W at 55° C 40 W at 40° C 39 W at 25° C 8-Port: 52 W at 55° C 50.5 W at 40° C 49 W at 25° C |
Channelized OC48/STM16 MIC with SFP | MIC-3D-1CHOC48 | 56.5 W at 55° C 54.5 W at 40° C 53 W at 25° C |
Tri-Rate MIC | MIC-3D-40GE-TX | 41 W |
MIC-MRATE |
| |
DS3/E3 MIC | MIC-3D-8DS3-E3 MIC-3D-8CHDS3-E3-B | 36 W at 55° C 35 W at 40° C 34 W at 25° C |
Channelized OC3/STM1 (Multi-Rate) Circuit Emulation MIC with SFP | MIC-3D-4COC3-1COC12-CE | 33.96 W |
See also
MX2008 DC Power Distribution Description (-48 V)
Most sites distribute DC power through a main conduit that leads to frame-mounting DC power distribution panels, one of which might be located at a location near the rack that houses the router. A pair of cables (one input and one return) connects each set of PDM input terminal studs to the power distribution panel.
The PSMs can be connected to two separate feeds from different
sources that are used for feed redundancy. There are two PDMs located
in slots PDM0/Input0 and PDM1/Input1 that are capable of carrying seven to nine feeds each. Each feed
is connected from one source to one PDM and feeds from the other source
to the second PDM of the DC power system. This configuration balances
power draw for the system by using the commonly deployed A/B feed
redundancy.
Each system provides N+1 PSM redundancy along with N+N feed redundancy. If both DC feeds are available, operating power draws from the feed with higher voltage. These feeds are set by the input mode DIP switch located on the DC PSM (see MX2008 DC Power Supply Module (-48 V) Description). Each set of power cables powers a single DC PSM and is capable of delivering 2500 W of power if 80-A feeds are connected. If feeds that connect to one PDM fail in a redundant configuration, the other feed starts to provide full power.
Figure 11 shows a typical DC source cabling arrangement.
All DC PSMs in a subsystem share the load. If one PSM fails in a redundant configuration, the remaining PSMs provide power to FRUs. Up to nine PSMs might be required to supply power to a fully configured router. A portion of power from each zone is reserved to power critical FRUs. These FRUs allow the system to operate even if power to a complete zone fails.
You must ensure that power connections maintain the
proper polarity. The power source cables might be labeled (+) and (-) to indicate their polarity.
There is no standard color coding for DC power cables. The color coding
used by the external DC power source at your site determines the color
coding for the leads on the power cables that attach to the terminal
studs on each PDM.
For field-wiring connections, use copper conductors only.
Power cords and cables must not block access to device components or drape where people could trip on them.
See also
MX2008 DC Power Distribution Description (240 V China)
Most sites distribute DC power through a main conduit that leads to frame-mounting DC power distribution panels, one of which might be located at a location near the rack that houses the router. A pair of cables (one input and one return) connects each set of PDM input terminal studs to the power distribution panel.
The PSMs can be connected to two separate feeds from different
sources that are used for feed redundancy. There are two PDMs located
in slots PDM0/Input0 and PDM1/Input1 that are capable of carrying seven to nine feeds each. Each feed
is connected from one source to one PDM and feeds from the other source
to the second PDM of the DC power system. This configuration balances
power draw for the system by using the commonly deployed A/B feed
redundancy.
Each system provides N+1 PSM redundancy along with N+N feed redundancy. If both DC feeds are available, operating power draws from the feed with higher voltage. These feeds are set by the input mode DIP switch located on the DC PSM (see MX2000 DC Power Supply Module (240 V China) Description). Each set of power cables powers a single DC PSM and is capable of delivering 2500 W of power if 20 A 240 V source is connected. If feeds that connect to one PDM fail in a redundant configuration, the other feed starts to provide full power.
Figure 12 shows a typical DC source cabling arrangement.
All DC PSMs in a subsystem share the load. If one PSM fails in a redundant configuration, the remaining PSMs provide power to FRUs. Up to nine PSMs might be required to supply power to a fully configured router. A portion of power from each zone is reserved to power critical FRUs. These FRUs allow the system to operate even if power to a complete zone fails.
You must ensure that power connections maintain the
proper polarity. The power source cables might be labeled (+) and (-) to indicate their polarity.
There is no standard color coding for DC power cables. The color coding
used by the external DC power source at your site determines the color
coding for the leads on the power cables that attach to the terminal
studs on each PDM.
The two input sources must have similar grounding type because the PSM can see 480 V if one source has positive ground (-240 V), and the other source has negative ground (+240 V). This might damage the PSM.
For field-wiring connections, use copper conductors only.
Power cords and cables must not block access to device components or drape where people could trip on them.
MX2008 DC Power (-48 V) System Electrical Specifications
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
Table 7 lists the DC power system electrical specifications.
Table 7: DC (-48 V) PSM Electrical Specifications per Input Configurations
Item | Specification | |
|---|---|---|
Maximum input current rating input voltage @ –40 VDC to –72 VDC | 60 A (for 2100 W output) 73 A (for 2500 W output) | |
Maximum output power | 2100 W @ 60 A 2500 W @ 73 A | |
Redundancy | N+1 PSM N+N feed redundancy | |
DC input voltage | –40 VDC to –72 VDC | |
DC nominal input current @ 48 VDC IN | 49 A (for 2100 W output) 59 A (for 2500 W output) | |
Maximum DC output @ 52 VDC (upper and lower cage) | 2500 W | |
DC standby output @ 5 VDC | 30 W | |
Efficiency Note: This value is within load range 17–67% and nominal input voltage at 48 VDC. | 91% | |
DC Power Supply Input Fuses
The DC (-48 V) PSM has a power supply input fuse in the negative terminals of both INP0 and INP1. Table 8 lists the electrical specification for this fuse.
Table 8: Electrical Specifications for the DC Power Supply Input Fuse
Electrical Characteristic | Value |
|---|---|
Fuse | Littelfuse FUSE M P 80A 170VDC E, P/N TLS080LS |
Voltage Rating | 170 Vdc |
Ampere Range | 80 A |
Interrupting Rating | 100 kA |
Approvals | UL Recognized (File: E71611) |
Construction | Body: Glass melamine Caps: Silver-plated brass |
Environmental | RoHS Compliant, Lead (Pb) Free |
See also
MX2008 Router DC (240 V China) System Electrical Specifications
Table 9 lists the DC power system electrical specifications.
Table 9: DC PSM (240 V China) Electrical Specifications Per Input Configurations
Item | Specification | |
|---|---|---|
Maximum input current rating input voltage @ 190 - 290 VDC | 16 A (for 2500 W output) | |
Maximum output power | 2500 W @ 190 V/16 A | |
Redundancy | N+1 PSM N+N feed redundancy | |
DC input voltage | 190 VDC to 290 VDC | |
DC nominal input current @ 240 VDC IN | 14 A (for 2500 W output) | |
Maximum DC output @ 52 VDC (upper and lower cage) | 2500 W | |
DC standby output @ 5 VDC | 30 W | |
Efficiency Note: This value is within load range 17-67% and nominal input voltage at 240 VDC. | 91% | |
DC Power Supply Input Fuses
The DC PSM has a power supply input fuse in the negative terminals of both INP0 and INP1. Table 10 lists the electrical specification for this fuse.
Table 10: Electrical Specifications for the DC Power Supply (240 V China) Input Fuse
Electrical Characteristic | Value |
|---|---|
Fuse | Fuse Walter MHP-20 |
Voltage Rating | 500 Vdc |
Ampere Range | 20 A |
Interrupting Rating | 20 kA |
Approvals | UL Recognized (File: E71611) |
Construction | Body: Glass melamine Caps: Silver-plated brass |
Environmental | RoHS Compliant, Lead (Pb) Free |
DC Power (-48 V) Circuit Breaker Requirements for the MX2008 Router
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
For PDMs, if you plan to operate a maximally configured DC-powered router, we recommend that you provision at least 80 A @ –48 VDC (nominal) for each DC input to the system. Use a customer-site circuit breaker rated according to respective National Electrical Code and customer site internal standards to maintain proper level of protection for the current specified above.
If you plan to operate a DC-powered router at less than the maximum configuration, we recommend that you provision a circuit breaker according to respective National Electrical Code and customer-site internal standards to maintain proper level of protection for the current specified above.
For PDMs, If you plan to operate a minimally configured DC-powered router, we recommend that you provision at least 60 A @ –48 VDC (nominal) for each input to the system. Use a customer-site circuit breaker rated according to National Electrical Code and customer site internal standards to maintain proper level of protection for the current specified above.
If you plan to operate a DC-powered router at less than the maximum configuration, we recommend that you provision a circuit breaker according to respective National Electrical Code and customer-site internal standards to maintain proper level of protection for the current specified above or each DC power supply rated for at least 125% of the continuous current that the system draws at –48 VDC.
See also
DC Power (240 V China) Circuit Breaker Requirements for the MX2000 Router
For PDMs, if you plan to operate a maximally configured DC-powered router, we recommend that you provision at least 20 A @ 240 VDC (nominal) for each DC input to the system. Use a customer site 2 pole circuit breaker rated according to respective National Electrical Code and customer site internal standards to maintain proper level of protection for the current specified above.
If you plan to operate a DC-powered router at less than the maximum configuration, we recommend that you provision a 2 pole circuit breaker according to respective National Electrical Code and customer site internal standards to maintain proper level of protection for the current specified above or each DC power supply rated for at least 125% of the continuous current that the system draws at 240 VDC.
DC Power Cable Specifications for the MX2008 Router
The MX2008, MX2010, and MX2020 routers support the same power modules AC, DC, 240 V China, and universal PSMs and PDMs.
The cable lugs attach to the terminal studs of each PDM (see Figure 13 and Figure 14).
The MX2008 supports 4-AWG DC power cable lugs for 80-A input, and 6-AWG DC power cable lugs for 60-A input.
Before router installation begins, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router.
The router is a pluggable type A equipment installed in restricted access location. It has a separate protective earthing terminal (Metric [–M6] and English [–¼-20] screw ground lugs) provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earth terminal must be permanently connected to earth.
Table 11 summarizes the specifications for the DC power cables, which you must supply.
Table 11: DC Power Cable Specifications
Cable Type | Quantity and Specification |
|---|---|
Power | Eighteen pairs of 4-AWG (21.2 mm2), used with 80-A PDM. Minimum 90°C wire, or as required by the local code. |
Eighteen pairs of 6-AWG (13.3 mm2), used with 80-A PDM. Minimum 90°C wire, or as required by the local code. |
You must ensure that power connections maintain the
proper polarity. The power source cables might be labeled (+) and (–) to indicate their
polarity. There is no standard color coding for DC power cables. The
color coding used by the external DC power source at your site determines
the color coding for the leads on the power cables that attach to
the terminal studs on each PDM.