Control Box-Feeder Terminal Unit

S/N

Functions

Remarks

Three section protection

Each protection can be vote back independently

Over-current count protection

Failure time count, output after meeting the number of

times, output mode is optional

Zero-sequence protection

Output options: exit, alarm and tripping

Pre - voltage fault protection

Protection can be accelerated when combined at fault

point

Post-reclosing acceleration

Vote back independently

Constant time-lag

The protection time is fixed

Inverse time limit

Multiple protection curves optional

Ring network protection

Hardware needs to configure double PT

Event Log

The recording time is exactly millisecond

Status enquiry

The main content is remote control and remote

metering

Remote programmable

Remote input support programmable

S/N

Protocols

Remarks

IEC balanced

IEC unbalanced

IEC

Now support level 3

Modbus

Items

Rated value

Remarks

Operating ambient temperature

-40 ~ +85℃

Environmental relative humidity

10 ~ 100%

Maximum absolute humidity

35g/m3

Atmospheric pressure

66~ 108kPa

Working voltage

AC220V±20%

Working voltage frequency

50HZ±5HZ

Power consumption

≤15W

Protective exit time

<35ms

Protect inherent action time at 1.5 times fixed value

Insulation impedance

>100MΩ/ DC500V

Power frequency withstand voltage

2k

Power circuit to ground

500

On-off input circuit to ground

500

Output circuit to ground

2k

AC circuit to ground

2k

AC circuit and power circuit

1500

Between on-off input circuit and output circuit

Impulse withstand voltage

5k

Power circuit to ground

1k

On-off input circuit to ground

1k

Output circuit to ground

5k

AC circuit to ground

5k

AC circuit and power circuit

1k

Between on-off input circuit and output circuit