Emerson 50 and 60 Hz Manuel D’Utilisation

Valve-regulated, lead acid battery cells are sensitive to ambient temperature and should be operated 

between 15°C and 25°C (59-77°F). Battery capacity is increased by 1% for every 1°C (2°F) increase in 

temperature up to 25°C (77°F). Battery life is reduced at temperatures above 25°C (77°F).
When batteries are mounted in the same room as the UPS unit, it is the battery that dictates the 

designed maximum ambient temperature, not the UPS. — i.e. in the case of valve-regulated cells, the 

ambient room temperature should be kept between 15°C and 25°C (59-77°F), and not between 0°C 

and 40°C (32-104°F) (which is the specified main equipment operating temperature range). Tempera-

ture deviations are permissible for short periods, provided the average temperature does not exceed 

25°C (77°F). 

The external dimensions are shown in Table 8. These are the same height and depth as the UPS 

module and provide a matching appearance when bolted together. All cabinets are fitted with doors, 

which must be fully opened in order to fit or remove the batteries. The door swing must therefore be 

taken into consideration when planning the positioning of the cabinets.

The unladen weight is shown below in Table 8. When designing the battery installation the weight of 

the batteries and cables must be added to the unladen weight. This is particularly important when 

placing the NX on a raised floor.

In 30 to 40kVA models fitted with internal battery and in all models fitted with a Battery Start kit, 

the UPS is fitted with an internal contactor for automatic connection and disconnection of the batter-

ies. External battery banks connected to such models generally are protected by a standard battery 

circuit breaker (with status contacts and without undervoltage trip coil). Refer to 2.5 - Battery Con-

trol for details.
When no internal contactor for automatic disconnection is installed in the UPS module, the external 

battery disconnection is performed by fitting a Circuit Breaker Controller Board and an undervoltage 

coil to the battery circuit breaker.
The circuit breaker can then be manually closed once the DC busbar is above the ‘low battery; trip 

voltage. Once closed, the circuit breaker can be opened manually at any time and is tripped automat-

ically by the UPS module following certain fault occurrences, an emergency power off command or if 

low/high DC busbar voltage is detected. Refer to 2.5 - Battery Control for details.

Narrow

Cabinet

30kVA
40kVA
60kVA
80kVA

125A
200A

160A
250A

828x825x1600

(32.6x32.4x63)

200 (441)

Wide

Cabinet

30kVA
40kVA
60kVA
80kVA

125A
200A

160A
250A

1490x825x1600

(58.7x32.4x63)

270 (595)

Large

Cabinet

100kVA
120kVA
140kVA
160kVA
200kVA

400A
500A

400A
500A

1490x825x1800

(58.7x32.4x76.9)

305 (672)