Free HCS-Pre-sales-Digital Power V1.0 Practice Questions

A.  

The highest volumetric efficiency, low noise and low vibration

B.  

No reciprocating motion, few moving parts, high reliability

C.  

International famous brand, long life, high reliability

D.  

Safe operation under 3000V voltage

A.  

Access Control

B.  

Alarm Management

C.  

Alarm system linkage

A.  

The isolating switch and the circuit breaker play the same role in the system

B.  

When selecting circuit breakers, do not consider redundancy

C.  

The leakage protection circuit breaker is not recommended to be used in the front end of the UPS system

D.  

The circuit breaker mainly plays the dual role of isolation and protection in the

system

A.  

Column in channel

B.  

The column is in the cabinet.

C.  

Columns span cabinets and aisles

D.  

Columns at both ends of the cabinet

A.  

2.42V

B.  

2.25V

C.  

2.35V

D.  

1.67V

A.  

When a fire alarm occurs in the channel, the ECC800 provides an alarm to the data center fire host by providing passive thousand-contact signals.

B.  

ECC800 can control skylight rollover and fire sprinkler to spray fire gas

C.  

The data center fire host provides passive dry contact signals to the ECC800, and the ECC800 can identify the fire alarm information

D.  

ECC800 controllable module and building fire control linkage

A.  

Current high reading value out-of-limit alarm

B.  

Overvoltage alarm

C.  

The main circuit is powered off

D.  

Abnormal frequency

E.  

Undervoltage alarm

A.  

185mm2 (506A) × 3

B.  

150mm2 (441A) x3

C.  

240mm 2 (599A) x3

D.  

120mm2 (382A)×3

A.  

Mains to Module Cable Length

B.  

Length between inside and outside machine

C.  

The way of the pipe

D.  

Wiring method

A.  

Class d

B.  

Class a

C.  

class c

D.  

class b