Emerson NXr Manuel d'utilisateur télécharger pdf (Page 15)

6 Chapter 1 Installation Of UPS Module

NXr UPS Module And Parallel System 30kVA ~ 200kVA User Manual

1.5.1 Rectifier And Bypass Input

Over currents

Install suitable protective devices in the distribution of the incoming mains supply, considering the power cable

current-carrying capacity and overload capacity of the system (see Table 8-6). Generally, magnetic circuit breaker

with IEC60947-2 tripping curve C (normal) at 125% of the current listed in Table 1-1 is recommended.

Split bypass: In case a split bypass is used, separate protective devices should be installed for the rectifier input and

bypass input in the incoming mains distribution panel.

Note

1. The rectifier input and bypass input must use the same neutral line.

2. For IT power systems, four-pole protective devices must be used upstream of the input distribution panel and output distribution

panel, external to the UPS.

Earth leakage

The residual earth current introduced by the radio frequency interference (RFI) suppression filter inside the UPS is

greater than 3.5mA and less than 1000mA. It is recommended that the sensitivity of all differential devices be verified

upstream of the input distribution panel.

1.5.2 External Battery Circuit Breaker

The UPS and its associated battery are protected against the effect of overcurrents through a DC circuit breaker

provided by the external battery cabinet.

The rated voltage of the external battery overcurrent protective device is more than 500Vdc, and its DC breaking

current is more than 8kA.

1.5.3 UPS Output

The UPS output distribution shall be configured with a protective device. The protective device shall be different from

the input distribution protection switch and able to provide overload protection (refer to Table 8-6).

1.6 Power Cables

The cable design must comply with the instructions provided in this section, follow local wiring practices, take the

environmental conditions into consideration, and refer to IEC60950-1 Table 3B.

1.6.1 Maximum Steady State AC And DC Currents Maximum steady state AC and DC currents

UPS

rating

(kVA)

Rated current (A) Busbar stud size

Input mains

current

，

(at full

load with battery

recharging)

Output current

at full

load

Battery

discharge

current at

EOD

Main input,

output, bypass

input cables

Battery cables

380V 400V 415V 380V 400V 415V Bolt

Torqu e

(N.m)

Bolt Torque (N.m)

200 330 316 302 303 290 278 630

150, 160 280 265 255 225 215 205 525

120 224 212 204 180 172 164 420

、

100

168 159 153 135 129 123 315

60 112 106 102 90 86 82 210

40 75 71 68 60 57 55 140

30 56 53 51 45 43 41 105 M6 4.8

30-B 56 53 51 45 43 41 105 M6 4.8

Note:

1. Input mains current for common rectifier and bypass AC input.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 64 65

Commentaires sur ces manuels

Pas de commentaire

Emerson NXr Manuel d'utilisateur Page 15

Commentaires sur ces manuels

Produits connexes et manuels pour Alimentations sans interruption (UPS) Emerson NXr