ST400S Series Microcomputer Line Protection Device

넳 넲
ST400S series microcomputer line protection device is a protection of the main body and display module split device, suitable for rated frequency 50/60Hz, rated voltage below 1kV into the line, feeder and PT circuit applications. The device is composed of protection main body, display module, special current transformer, residual current transformer, external expansion module and other parts. The device display module is installed on the cabinet panel, and the rest is installed in the cabinet.

ST400SSeries Microcomputer Line Protection Device

1)Device Overview

ST400Sseries microcomputer line protection device is a protection of the main body and display module split device, suitable for rated frequency 50/60Hz, rated voltage below 1kV into the line, feeder and PT circuit applications. The device is composed of protection main body, display module, special current transformer, residual current transformer, external expansion module and other parts. The device display module is installed on the cabinet panel, and the rest is installed in the cabinet.

2)Device Model

Note:

1)display module with WiFi function;

2) See "2.3 Current Transformer" in this chapter for current transformer ";

3)EIO function has 1 channel of 4 ~ 20mA analog output, 1 channel of temperature input, 4 channels of DI input, 2 channels of DO output and 1 channel of zero sequence voltage input; (The sub-model EIO1 has 1 channel of 4 ~ 20mA analog output and 1 channel of temperature input);

4)ETM 6-way PT1000 input.

3)technical parameters

Analog Input Loop

transformer rated current In

1A, 5A, 25A, 100A, 160A, 400A

Rated voltage Un

AC100V, AC400V, AC690V

frequency F

50/60Hz

Rated residual current I △n

1A

current circuit

2incontinuous operation; 10In is allowed to operate for 10s;

40Inis allowed to run for 1s

voltage circuit

1.2UnContinuous operation; 1.4Un is allowed to operate for 10s

power consumption

No current, voltage <1VA/phase

Measurement range and accuracy

Name

accuracy

current I

0.1~1.2 In

≤±0.5%In

voltage U

0.1~1.2 Un

≤±0.5%Un

active power P

electrical degree EP

|Cos&phi;|≥0.707

U/Un=(50~ 120)%

I /In=(50~ 120)%

≤ ± 1%

power factor COS

|Cos&phi;|≥0.707

≤ ± 1%

Residual current I △

0.5~1.2 I△n

≤±1%I△n

current harmonics

Ih/In=(5~ 50)%

I /In=(50~ 120)%

≤±1%In

voltage harmonics

Uh/Un=(5~ 50)%

U/Un=(50~ 120)%

≤±1%Un

analog output

4~ 20mA

≤ ± 0.5%

temperature

0~ 200 ℃

≤ ± 1 ℃

protection action accuracy

Current/voltage fixed value

≤ ± 3% fixed value

Delay time T

T<4S

≤ ± 35ms

T≥ 4s

≤ ± 1% fixed value

return coefficient

Overprotection

<0.95 percentfixed value

undershoot protection

>1.05 percentfixed value

residual current

50~ 1000mA

≤ ± 1mA

temperature

45~ 140 ℃

≤ ± 1 ℃

Auxiliary power supply

power supply voltage (both AC and DC)

AC 85~264V,DC 90~300V

power consumption (normal/protected)

≤ 3W / 5W

surge current

≤ 20A

working power supply

2S

switch input (standard 11, optional 4)

Isolation Method

optical isolation

Power supply mode

ST400S*FBuilt-in power current source

ST400S*Mexternal AC220V

ST400S * H1external DC110V

ST400S * H2external DC220V

response time

<50ms

relay output (standard 6, optional 2)

R1, R2, R3, R4

AC250V 10A,DC30V 10A

R5, R6

AC250V 7A,DC30V 7A

analog (4 ~ 20mA) transmission output

transmission parameters

three-phase current, three-phase voltage,

residual current, active power

Load resistance

≤ 750Ω

communication function

Modbus-RTUStatute

1/2channel, RS485 interface, terminal access

Modbus-TCPStatute

2channel, Ethernet interface, RJ45 access

PROFINETStatute

2channel, Ethernet interface, RJ45 access

PROFIBUS-DPV1Statute

1/2way, PROFIBUS interface, DB9 access

work environment

working temperature

-25~ +55 ℃

storage temperature

-25~ +70 ℃

relative humidity

5~ 95% (no condensation or ice inside)

altitude

<3000m

IPlevel

≥ IP20 (Panel ≥ IP40)

4)Contour Installation

Device Body

dimensions: 75.0mm × 100.0mm × 115.0mm (length and widthhigh).

the width (100mm) and height (115mm) of the main body of the product and the expansion module are the same, but the length is different, as shown in the following figure:

Display Module ST522S

are: 103.0mm × 64.5mm × 45.9mm (length, width and depth), and the opening dimensions of the panel are: 91.5mm × 54.5mm (length, width).

Installation Method

device protection is standard 35mm guide rail installation or fixed installation in the cabinet, and the guide rail installation method of the external expansion module can only use the guide rail shown in the left view of the main body.

device is to install the buckle to fix the opening of the panel, install the four buckles along the grooves at the four corners of the device, and push them forward tightly, so that the front end is squeezed on the cabinet body, so that the device is installed.

5)Terminal Arrangement

6)Terminal Definition


Product Details

ꄴThe previous one： ST420HF Series Combined Electrical Fire Monitoring Detector
ꄲThe latter one： ST420B1 series microcomputer line protection device

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