TP48300B-L04C1 Indoor Site Power Cabinet

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Cabinet height: 480mm

Heat dissipation type: Natural Cooling, 110V AC

Application scenario: indoors

Maximum output current: 300A

Rate output voltage: 48V

Site monitoring unit: SMU06C

Supports a maximum of six R4850G2s or R4830G2s


The TP48300B-L04C1 is an indoor communications power system that supplies power to and back up power for -48 V DC communications equipment. The maximum output current of the 300 A.

Tech Specs
Cabinet Specifications
Dimensions (H x W x D) 480 mm x 442 mm x 360 mm
Weight ≤ 30 kg (excluding rectifiers)
Protection level IP20
Installation mode Floor mounted, wall mounted, battery stacked, or 19- or 21-inch standard rack mounted
Maintenance mode Maintained from the front and located against a wall (at least 100 mm away from the wall)
Cabling Routed in and out from the top
Heat dissipation Cools as the ambient temperature drops
Rectifier A maximum of six R4850G2s or R4830G2s
Maximum output current 300 A
Power distribution unit (PDU) AC PDU: AC input circuit breaker

DC PDU: BLVD route, LLVD route, battery route

Site monitoring unit (SMU) SMU06C
surge protection device (SPD) nominal surge discharge current: 20 kA (8/20 µs); maximum surge discharge current: 40 kA (8/20 µs)
PDU specifications
AC power distribution AC input circuit breaker One 2-pole 125 A circuit breaker
AC output circuit breaker One 2-pole 16 A circuit breaker (reserved)
Rectifier AC input circuit breaker Six 1-pole 63 A circuit breakers (reserved)
DC power distribution BLVD route One 1-pole 63 A circuit breaker, one 1-pole 32 A circuit breaker, and two 1-pole 16 A circuit breakers
LLVD route One 1-pole 100 A circuit breaker and two 1-pole 80 A circuit breakers
Battery route Two 1-pole 160 A fuse
Electrical Specifications
AC input Input system 110 V AC dual-live wire input system (compatible with 220 V AC single-phase input systems)
Input voltage 85 V AC–300 V AC
Input frequency Range: 45-66 Hz; nominal frequency: 50/60 Hz
Power factor ≥ 0.99 (Rated input and full load)
Total harmonic distortion (THD) ≤ 5% (Vin = 208 V AC, 220 V AC, 230 V AC, 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%
Ripple and noise ≤ 200 mVp-p
Noise weighting ≤ 2 mV
Imbalance of load sharing < ±5% (20%-100% loaded)
AC input protection AC input overvoltage protection threshold 300 V AC
AC input overvoltage recovery threshold When the voltage is restored to 290 V AC, the output resumes.
AC input undervoltage protection threshold < 85 V AC
AC input undervoltage recovery threshold When the voltage is restored to 90 V AC, the output resumes.
DC output protection DC output overvoltage protection threshold Range: 58.5-60.5 V DC

1. If an overvoltage occurs due to an internal fault in a rectifier, the rectifier locks out.

2. If the external voltage is higher than 63 V for more than 500 ms, the rectifier locks out.

AC surge protection Level-C surge protection, nominal lightning strike discharge current: 20 kA (8/20 µs). The maximum lightning strike discharge current is 40 kA (8/20 µs).
DC surge protection Differential mode: 10 kA (8/20 µs); common mode: 20 kA (8/20 µs)
Safety and regulatory design Complies with the IEC/EN60950-1.
Mean time between failures (MTBF) 200,000 hours (at 25°C)


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