Options—For Assembly Inside the UPS Cabinet

9.1.6Battery Ground Fault Detection

In addition to any residual current device mounted externally and upstream the UPS or when optional isolation transformers are fitted to the UPS, an optional residual battery current device can be fitted to detect leakage current from the battery into the PE (Protective Earth) Residual current range monitored: 30~3000mA.

Power supply voltage for the set: AC230V (L-N);

When a battery ground fault is detected, an alarm will appear on the UPS display panel. An additional Dry contact fault Alarm signal is available for remote monitoring:

Table 27 Dry contact fault alarm signal is available for remote monitoring

Terminal

Name

Definition

 

 

 

21

Common

Battery Ground Fault Detection – can be

programmed as Alarm or Pre-Alarm

 

 

22

NC

 

 

 

 

24

NO

 

 

 

 

The Battery ground fault detection set contains one CT (current transformer) and one DC sensitive residual current monitor. The connection of this set for UPS is illustrated as follows.

Figure 74 Battery ground fault detection set connections

Battery

 

Current

 

 

BCB or

 

Transformer

 

 

W1-A358

 

Contactor

 

 

 

 

 

 

 

 

 

 

 

X

Batt-N

 

 

 

 

 

 

 

 

K1

K2

I2

I2

 

Monitor Board

Socket

Output

 

-U2

 

 

 

 

 

 

Phase

A1

 

 

11

4

+12V

 

 

 

 

 

 

A2

 

 

14

2

IN DRY-X3

 

 

 

 

 

 

Output

 

 

 

 

BtG

 

Neutral

Battery Ground

 

 

 

 

UPS

 

 

Fault Detection

 

 

 

 

 

 

 

 

 

Resys B470

 

 

 

 

 

 

(AC230)

 

 

 

 

 

The Battery Ground Fault Detection Set is assembled within the UPS cabinet.

108

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Emerson 50 and 60 Hz, 400V, 30-200kVA user manual Contactor, Battery Ground Fault Detection, Terminal Name Definition
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30-200kVA, 400V, 50 and 60 Hz specifications

The Emerson 400V, 50 and 60 Hz, 30-200 kVA is a robust and versatile power solution designed for various industrial and commercial applications. This equipment delivers a reliable source of power, ensuring operational continuity and efficiency for numerous critical systems.

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