MPSIII系統(tǒng)提供5 VDC、15 VDC、-15VDC、24VDC、，

48VDC和125VDC電源至的Harmony機(jī)架組件

Symphony控制系統(tǒng)。MPSIII系統(tǒng)也可以

用于為INFI 90 OPEN系統(tǒng)部件供電。

MPSIII系統(tǒng)旨在完全取代MPSII

Harmony Rack系統(tǒng)中使用的系統(tǒng)。的組件

MPSII和MPSIII系統(tǒng)不能互換。這個(gè)

MPSIII系統(tǒng)與MPSII系統(tǒng)適用于相同的機(jī)柜空間，但某些機(jī)柜布置和類型可能需要

使用額外的安裝裝置。

注：MPSIII系統(tǒng)提供了一個(gè)輔助后門

安裝風(fēng)扇以進(jìn)行適當(dāng)冷卻。使用MPSII系統(tǒng)的機(jī)柜可能不會(huì)

有這個(gè)風(fēng)扇。電源托盤滑入電源機(jī)箱

用拇指螺絲固定。有15種不同的功率

供應(yīng)托盤可用。參考第1節(jié)中的術(shù)語(yǔ)

完整列表。安裝在電源機(jī)箱中的電源設(shè)備托盤

必須是相同的類型。電源托盤可以提供

5 VDC、15 VDC或-15 VDC系統(tǒng)的組合操作

電壓，以及24 VDC、48 VDC或125 VDC現(xiàn)場(chǎng)電源。每個(gè)

電源托盤可以接受120伏交流電、240伏交流電或125伏交流電

輸入功率。一對(duì)冗余供電托盤的輸入電壓可以來(lái)自不同的電源和不同的電壓等級(jí)。交流輸入具有更大的有功功率因數(shù)校正

大于0.95。共享電路允許電源托盤

相等地共享輸出電流。電源托盤監(jiān)視器

其輸出和內(nèi)部溫度，并顯示狀態(tài)

帶有LED。每個(gè)電源托盤的輸入電源由連接到PEP的電源線提供。

本節(jié)包含安裝時(shí)所需的信息

MPSIII系統(tǒng)。它包括關(guān)于特殊處理的信息，

開箱和檢查、安全注意事項(xiàng)和接線

考慮因素。

The MPSIII system supplies 5 VDC, 15 VDC, -15VDC, 24VDC,?

48 VDC, and 125 VDC power to Harmony rack components of?

the Symphony control system. The MPSIII system can also be?

used to power INFI 90 OPEN system components.

The MPSIII system is designed to entirely replace the MPSII?

system used in Harmony Rack systems. Components of the?

MPSII and the MPSIII system are not interchangeable. The?

MPSIII system fits in the same cabinet space as the MPSII system, but some cabinet arrangements and types may require?

that additional mounting provisions be used.

NOTE: The MPSIII system has provisions for a supplemental rear door?

mounted fan for proper cooling. Cabinets using the MPSII system may not?

have had this fan.Power supply trays slide into the power chassis and are?

secured with thumb screws. There are 15 different power?

supply trays available. Refer to Nomenclature in Section 1 for?

the full listing. Power supply trays installed in a power chassis?

must be of the same type. Power supply trays can provide?

combinations of 5 VDC, 15 VDC, or -15 VDC system operating?

voltages, and 24 VDC, 48 VDC, or 125 VDC field power. Each?

power supply tray can accept 120 VAC, 240 VAC, or 125 VDC?

input power. Input voltages to a redundant pair of power supply trays may be from different sources and of different voltages. AC inputs have active power factor correction to greater?

than 0.95. Sharing circuitry allows the power supply trays to?

equally share output current. The power supply tray monitors?

its output and internal temperature and displays the status?

with an LED. Input power to each power supply tray is provided by a cord that connects to the PEP.

This section contains information needed when installing the?

MPSIII system. It includes information on special handling,?

unpacking and inspection, safety considerations, and wiring?

considerations.

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