Do CE series switches support high-voltage DC power supply

1

China's national standard for high-voltage DC power supply was released in December 2011 and took effect in February 2012. The standard defines power supply with 240 V DC (192 V to 288 V). The International Electrotechnical Commission (IEC) released the 380 V DC (260 V to 400 V) power supply standard, ETSI EN 300 132-3-1 V2.1.1, in February 2012. Because the two standards were released not long ago and define different voltage ranges, power supply manufacturers have not released power supply products complying with the high-voltage DC power supply standards. All the manufacturers use AC power modules in 240 V DC power supply scenarios.
AC chassis modules on CE series switches can work in a certain high-voltage DC voltage range. For security purpose, power modules of the switches provide overvoltage protection function and will cut off power supply when the input voltage exceeds the upper limit. The voltage protection function prevents damage to power modules or other dangers caused by abnormal input voltage. The voltage upper limit triggering overvoltage protection is larger than the maximum input voltage allowed by a power module.
The 240 V DC input standard has higher requirements for power module protection components and secure distance than the 220 V AC input standard. Currently, AC power modules can work with 240 V DC power input.

Other related questions:
AC and DC power supply on S series switches
You can check whether an S series switch supports AC or DC power supply based on the following guidelines: 1. Check the switch model. If the model contains AC, the switch supports AC power supply. If the model contains DC, the switch supports DC power supply. 2. Check the power module. Differentiate AC and DC switches based on the power module. Power modules are divided into non-PoE and PoE power modules. You can also use the Hardware Query Tool at Hardware Query Tool.

Does a 3000 W AC&high-voltage DC power module support AC power input on CE12800 series switches
A 3000 W AC&high-voltage DC power module supports 220 V/110 V AC power input and 240 V DC input, and provides 53.5 V DC/3000 W output. Description: When AC power supply is used and the input voltage is lower than or equal to 175 V AC, the rated output power reduces to 1500 W.

Does the S12700 support the AC power supply and DC power supply
AC and DC power modules cannot be installed simultaneously in the same type of power slots.

Does the S7700&S9700 support the AC power supply and DC power supply
AC and DC power modules or power modules of different power values cannot be installed simultaneously in the same type of power slots (system or PoE). In versions earlier than V200R006C00, the PoE slots of a switch allow only AC power modules. To use the PoE function on a switch, use AC power modules as the system power modules. In V200R006C00 and later versions, the PoE slots allow both AC and DC power modules.

AC and DC voltage of S series switches
AC and DC voltages of S series switches are as follows: 1. DC power module - Power modules of the S2700 and S3700, and 150 W and 170 W power modules Rated voltage range: -48 V DC to -60 V DC. Maximum voltage range: -36 V DC to -72 V DC. - 350 W, 500 W, 650 W, 1600 W, and 2400 W power modules Rated voltage range: -48 V DC to -60 V DC. Maximum voltage range: -38.4 V DC to -72 V DC. - 2200 W power module Rated voltage range: -48 V DC to -60 V DC. Maximum voltage range: -40 V DC to -72 V DC. 2. AC power module - Power modules of the S2700 and S3700, and 150 W, 170 W, 250 W, and 500 W power modules Rated voltage range: 100 V AC to 240 V AC, 50/60 Hz. Maximum voltage range: 90 V AC to 264 V AC, 47 Hz to 63 Hz. - 350 W, 600 W, 580 W, and 1150 W power modules Rated voltage range: 100 V AC to 240 V AC, 50/60 Hz. Maximum voltage range: 90 V AC to 290 V AC, 45 Hz to 65 Hz. - 800 W, 2200 W, and RPS1800 power modules When the rated input voltage is 220 V: Rated voltage range: 220 V AC to 240 V AC, 50/60 Hz. Maximum voltage range: 200 V AC to 240 V AC, 47 Hz to 63 Hz. When the rated input voltage is 110 V: Rated voltage range: 110 V AC to 120 V AC, 50/60 Hz. Maximum voltage range: 90 V AC to 175 V AC, 47 Hz to 63 Hz. - 870 W power module (matching the RPS1800) When the rated input voltage is 220 V: Rated voltage: 220 V AC, 50/60 Hz. Maximum voltage range: 200 V AC to 240 V AC, 47 Hz to 63 Hz. When the rated input voltage is 110 V. Rated voltage: 110 V AC, 50/60 Hz. Maximum voltage range: 100 V AC to 120 V AC, 47 Hz to 63 Hz. You can use Hardware Query Tool to query details.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top