ST570L Series Motor Protection Controller

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ST570L23-1
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ST570L1/2 series motor protection controller is a protection of the main body and display module integrated device, suitable for rated frequency 50/60Hz, rated voltage below 1kV motor circuit applications. The device is composed of protection main body (including display), special current transformer, zero sequence current transformer, temperature sensor and other parts. The protection main body of the device is installed on the cabinet panel, and the other parts are installed in the cabinet.

1)Device Overview

ST570L1/2series motor protection controller is a protection of the main body and display module integrated device, suitable for rated frequency 50/60Hz, rated voltage 1kV motor circuit applications. The device is composed of protection main body (including display), special current transformer, zero sequence current transformer, temperature sensor and other parts. The protection main body of the device is installed on the cabinet panel, and the other parts are installed in the cabinet.

2)Device Model[V3.0]]

Note:

1) Standard 1 channel Modbus-RTU communication and WiFi function;

2)AC660V/690V circuit application shall be specified when ordering;

3) See "2.3 Current Transformers" in this chapter for current transformers ".

3)technical parameters

Analog Input Loop

transformer rated current In

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

Rated voltage Un

AC380V/400V

frequency F

50/60Hz

Rated leakage current I △n

1A, 5A, 30A

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

0.5~1.2 In

≤±0.5%In

or 0.0025A

voltage U

0.5~1.2 Un

≤±0.5%Un

active power P

|Cos&phi;|≥0.707

U/Un=(50~ 120)%

I /In=(50~ 120)%

≤ ± 0.5%

Electrical EP/EQ

≤±0.2kWh/kvarh

frequency F

45to 65Hz

≤ ± 0.05Hz

power factor COS

|Cos&phi;|≥0.707

≤ ± 0.5%

Leakage current I △

0.2~10 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

heat accumulation

≤ ± 5%

Thermal overload time

≤ ± 5% or ± 50ms

tEtime

≤ ± 3% or ± 50ms

Time-limited protection delay time T

T<4S

≤ ± 20ms

T≥ 4s

≤ ± 1% fixed value

or ± 20ms

return coefficient

Overprotection

<0.95 percentfixed value

underprotection

>1.05 percentfixed value

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 8)

Isolation Method

optical isolation

Power supply mode

Built-in DC24V

response time

≤ 50ms

relay output (standard 5 way)

R1, R2, R3

AC250V 10A,DC30V 10A

R5, R6

AC250V 5A,DC30V 5A

analog (4 ~ 20mA) transmission output

transmission parameters

three-phase current, three-phase voltage,

leakage current, active power

Load resistance

≤ 750Ω

communication function

Modbus-RTUStatute

1/2channel, RS485 interface, terminal access

Modbus-TCPStatute

2channel, Ethernet interface, RJ45 access

PROFIBUS-DPV0Statute

1way, PROFIBUS interface, DB9 access

work environment

working temperature

-25~ 60 ℃

storage temperature

-40~ +70 ℃

relative humidity

5~ 95% (no condensation or ice inside)

altitude

<3000m

IPlevel

≥ IP20 (panel ≥ IP40)

4)Contour Installation

Device Body

are: 103.0mm × 64.5mm × 122.0mm (length, width and depth), and the opening dimensions of the panel are: 87.5mm × 51.0mm (length and width).

Installation Method

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


7)Typical Wiring

ST570L1Typical Wiring Diagram

ST570L2Typical Wiring Diagram

Product Details

ꄴThe previous one： 无
ꄲThe latter one： ST570B3 series motor protection controller

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