Emerson 50 and 60 Hz, 400V, 30-200kVA Intermediate DC circuit, battery, Technical Specifications

Technical Specifications

Table 37 Intermediate DC circuit, battery

Unit of

Rated Power, kVA

Measurement

30

40

60

80

100

120

140

160

200

Battery bus voltage

VDC

Nominal: 480V (VRLA Float charge is 540V)

Range: 400V ~ 600V

Quantity of lead-acid cells

Nominal

—

240 = [40 x 6-cell (12V) blocks]

Maximum

—

252 = [42 x 6-cell (12V) blocks]

Minimum

—

228 = [38 x 6-cell (12V) blocks]

Float Voltage (VRLA)

V/cell

2.25 V/cell (selectable from 2.2 –2.3V/cell)

Constant current and constant voltage (IU) charge mode

Temperature

mV/°C/cl

- 3.0 (selectable 0 to – 5.0 around 25°C [77°F] or 20°C [68°F]or inhibit)

compensation

Ripple Voltage

% V float

≤1

Ripple Current 1

% C

≤5

10

Boost Voltage (VRLA)

V/cell

2.35 V/cell (selectable from 2.30-2.40V/cell)

Constant current and constant voltage (IU) charge mode

- float-boost current trigger 0.050 C10 (selectable 0.030-0.070)

Boost Control

—

- boost-float current trigger 0.010 C10

(selectable 0.005-0.025) with

24 hr safety time-out (selectable 8-30 hr)

- boost mode inhibit also selectable

1.63 V/cell (selectable from 1.60~1.75 V/cell

End Of Discharge (VRLA)

V/cell

Auto Inverse EOD voltage x discharge current mode

(The end of discharge voltage increases at low discharge currents).

2.4 V/cell (selectable from 2.3-2.4V/cell)

Battery Charge

V/cell

Constant current and constant voltage (IU) charge mode

Programmable auto trigger or inhibit of boost mode

Battery Charging Power 2

kW

5.1

6.7

10

13

17

20

23.8

27.2

34

Max Current

A

13

17

25

33

43

50

60

68

85

(Adjustable) 3

1.For a battery capacity of 24Ah or that corresponding to a rated back-up time of 10 minutes, whichever is greatest.

2.At low input voltage the UPS recharge capability increases with load decrease (up to the maximum capacity indicated).

3.Maximum currents listed are for end of discharge voltage of 1.67 V/cell for 240 cells.

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