TP482000B-N20B1 2400 A Combined Telecom Power Cabinet

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2400 A combined cabinet, supports flexible power distribution

Apply to 220/380 V AC power grids

Installed on a concrete floor or an ESD floor

Site monitoring unit: SMU05A

Supports a maximum of forty-eight R4850G2s, R4850N2s, or R4850S1s

A single TP482000B cabinet has a maximum capacity of 144 kW,

If multiple cabinets are interconnected, the capacity can reach 720 kW


The TP482000B is Huawei’s fourth-generation high-performance indoor telecom power system. The system supplies reliable –48 V DC power to equipment in central equipment rooms. The TP482000B is available in four different models of combined cabinets, each of which contains an AC power distribution unit (PDU), a DC PDU, rectifiers, and a site monitoring unit (SMU). Each cabinet has a maximum capacity of 2400 A.

The TP482000B supports cabinet interconnection. TP482000B cabinets of the same model can be interconnected, and TP482000B cabinets can also be interconnected with TP483000D AC cabinets and DC cabinets.

Tech Specs
Item TP482000B-N20B1 Typical Configurations TP482000B-N20B1 Flexible Configurations
AC input system 220/380 V AC three-phase four-wire
AC input terminal Two 3-pole 200 A terminal blocks
Load route Layer 1: six 500 A NT3 fuses

Layer 2: six 160 A NT00 fuses, six 100 A NT00 fuses

Layer 1:

Six NT1 fuses, six NT2 fuses, six NT3 fuses

Twenty-four 63 A circuit breakers or sixteen 100 A circuit breakers


Layer 2:

Twelve NT00 fuses

Twenty-four 63 A circuit breakers or sixteen 100 A circuit breakers

Rectifier circuit breaker Forty-eight 1-pole 32 A circuit breakers
Rectifier Forty-eight R4850G2s, R4850N2s, or R4850S1s
AC surge protection Two 20 kA/40 kA SPDs

Two 4-pole 32 A SPD circuit breakers

Battery route Two groups of two 1250 A NT4 fuses connected in parallel
Battery current monitoring Two 2000 A/25 mV shunts
Total load current monitoring One 2000 A/25 mV shunt
DC power indicator One DC power indicator (green)
System alarm indicator One system alarm indicator (red)
DC surge protection DC SPD (10 kA in differential mode, 20 kA in common mode, 8/20 µs)
Monitoring unit SMU05A
Signal monitoring Power distribution monitoring unit
Cabinet Specifications
Power system dimensions (H x W x D) 2000 mm x 600 mm x 600 mm
Weight < 150 kg (excluding rectifiers)
Protection level IP20
Installation mode On a concrete floor or ESD floor
Maintenance mode 2400 A cabinet: Maintained from the front or rear (at least 400 mm away from a wall)

1200 A cabinet: front maintenance

Cabling mode AC cables are routed in and out from the bottom or top. DC cables are routed out from the top and can be routed out from the bottom if a side compartment is added.
Cooling mode Natural cooling
Electrical Specifications
AC input Input system 220/380 V AC three-phase four-wire
Input frequency 50/60 Hz (range: 45–66 Hz)
Power factor ≥ 0.99 (rated load)
Total harmonic distortion (THD) < 5% (rated input; 50%–100% load)
DC output Output voltage range –42 V DC to –58 V DC
Default output voltage –53.5 V DC
Output power Maximum output power = Output power of a single rectifier x Number of rectifiers.
Regulated voltage precision ≤ ±1%
Psophometrically weighted noise ≤ 2 mV (300–3400 Hz)
Peak-to-peak noise ≤ 200 mV (rated input voltage and load; bandwidth ≤ 20 MHz)
AC input protection AC input overvoltage alarm threshold 290 V AC ±10 V AC (rectifier input voltage), hysteresis ≤ 10 V AC
AC input undervoltage alarm threshold 170 V AC ±10 V AC (rectifier input voltage), hysteresis ≤ 10 V AC
AC input overvoltage protection threshold 305 V AC ±10 V AC (rectifier input voltage), 5 V AC ≤ hysteresis ≤ 15 V AC
AC input undervoltage protection threshold 85 V AC ±3 V AC (rectifier input voltage), hysteresis > 5 V AC, max. undervoltage protection recovery threshold 90 V AC ±3 V AC
DC output protection DC output overvoltage alarm threshold Default value: –58.5 V DC ±0.3 V DC
DC output overvoltage alarm recovery threshold Default value: –58.0 V DC ±0.3 V DC (0.5 V DC lower than the overvoltage alarm threshold)
DC output undervoltage alarm threshold Default value: –45.0 V DC ±0.3 V DC
DC output undervoltage alarm recovery threshold Default value: –45.5 V DC ±0.3 V DC (0.5 V DC higher than the undervoltage alarm threshold)
Others AC surge protection Nominal lightning strike discharge current: 20 kA (8/20 µs); maximum lightning strike discharge current: 40 kA (8/20 µs)
DC surge protection Differential mode: 10 kA (8/20 µs); common mode: 20 kA (8/20 µs)
Safety compliance IEC/EN60950-1/GB4943
Mean time between failures (MTBF) 500,000 hours (30°C)


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