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Measurement&Relay

Purpose

Basic type SMPD-L

General purpose

For 3-phase distribution board

Key Features
  • Products utilizing government-certified leakage current limiting technology.
  • Scope: Leakage current across the entire wiring section (secondary side) only.
  • User-specific input/output settings are configurable.
  • Detects leakage current, triggers shutdown/ alarm operation times, detected temperature and other parameters can be customized (digitized display).
  • Collected information is transmitted to a computer via RS485 communication.
  • Administrator video surveillance is possible.
Specification
The above specifications are based on 250V. If the voltage changes, the detailed specifications will change, so please inquire.
Format Specifications
Rated voltage 220V ±15%
Test voltage 250V standard
Power consumption (fault) 5mA~10mA (or less)
Leakage current measurement range 1~9999mA
Leakage limit current 5mA or less
Recommended setting range 1~5mA
Insulation resistance alarm value 250kΩ~50kΩ or less
Resistance conversion detection value 25Ω~250kΩ(9999~1mA) (1mA=250kΩ)
Insulation capacitance alarm value 0.0125~0.0625uF or more
Capacitance conversion detection value 0.0125~125uF(1~9999mA) (1mA=0.0125uF)
Temperature detection range 0 ~ 125℃
Temperature setting range 0 ~ 125℃
Output speed 0~60S (Configurable)
Operating altitude above sea level ≤4,500m
Operating environment -25℃ ~ 40℃
Operating relative humidity Maximum 90%, Minimum 20%
Normal current consumption (VA) 5VA or less
Fault current consumption(VA) 8VA or less
Test voltage 2kV
Insulation resistance 1㏁ or more
Frequency 50/60Hz
Communication method RS485 MODBUS-RTU
Product appearance

Floor plan

Side view

Panel perforation

Layout

Purpose

For Construction site SMPD-C

General purpose

For 3-phase distribution board

Key Features
  • Products utilizing government-certified leakage current limiting technology.
  • Scope: Leakage current across the entire wiring section (secondary side) only.
  • User-specific input/output settings are configurable.
  • Detects leakage current, triggers shutdown/ alarm operation times, detected temperature and other parameters can be customized (digitized display).
  • Collected information is transmitted to a computer via RS485 communication.
  • Administrator video surveillance is possible.
Specification
The above specifications are based on 250V. If the voltage changes, the detailed specifications will change, so please inquire.
Format Specifications
Rated voltage 220V ±15%
Test voltage 250V standard
Power consumption (fault) 5mA~10mA ( or less)
Leakage current measurement range 1~9999mA
Leakage limit current 3mA or less
Recommended setting range 0.1~3mA
Insulation resistance alarm value 2.5MΩ~83.3kΩ or less
Resistance conversion detection value 250Ω~2.5MΩ(999.9~0.1mA) (1mA=250kΩ)
Insulation capacitance alarm value 0.00125~0.0375uF이상
Capacitance conversion detection value 0.00125~12.5uF(0.1~999.9mA) (1mA=0.0125uF)
Temperature detection range 0 ~ 125℃
Temperature setting range 0 ~ 125℃
Output speed 0~60S(Configurable)
Operating altitude above sea level ≤4,500m
Operating environment -25℃ ~ 40℃
Operating relative humidity Maximum 90%, Minimum 20%
Normal current consumption (VA) 5VA or less
Fault current consumption(VA) 8VA or less
Test voltage 2kV
Insulation resistance 1㏁ or more
Frequency 50/60Hz
Communication method RS485 MODBUS-RTU
Product appearance

Floor plan

Side view

Panel perforation

Layout

Purpose

SMPD-M : Medical / H : High-sensitivity (ex, semiconductors)

General purpose

For 3-phase distribution board

Key Features
  • Products utilizing government-certified leakage current limiting technology.
  • Scope: Leakage current across the entire wiring section (secondary side) only.
  • User-specific input/output settings are configurable.
  • Detects leakage current, triggers shutdown/ alarm operation times, detected temperature and other parameters can be customized (digitized display).
  • Collected information is transmitted to a computer via RS485 communication.
  • Administrator video surveillance is possible.
Specification
The above specifications are based on 250V. If the voltage changes, the detailed specifications will change, so please inquire.
Format Specifications
Rated voltage 220V ±15%
Test voltage 250V standard
Power consumption (fault) 5mA~10mA ( or less)
Leakage current measurement range 0.01~99.99mA
Leakage limit current 2mA or less
Recommended setting range 0.01~2mA
Insulation resistance alarm value 25MΩ~125 kΩ or less
Resistance conversion detection value 2.5kΩ~25MΩ(99.99~0.01mA) (1mA=250kΩ)
Insulation capacitance alarm value 0.000125~0.025uF이상
Capacitance conversion detection value 0.000125~1.25uF(0.01~99.99mA) (1mA=0.0125uF)
Temperature detection range 0 ~ 125℃
Temperature setting range 0 ~ 125℃
Output speed 0~60S(Configurable)
Operating altitude above sea level ≤4,500m
Operating environment -25℃ ~ 40℃
Operating relative humidity Maximum 90%, Minimum 20%
Normal current consumption (VA) 5VA or less
Fault current consumption(VA) 8VA or less
Test voltage 2kV
Insulation resistance 1㏁ or more
Frequency 50/60Hz
Communication method RS485 MODBUS-RTU
Product appearance

Floor plan

Side view

Panel perforation

Layout

Purpose
  • TN system or IT system leakage current performance tester
  • Functional testing of leakage circuit breakers and insulation monitoring devices (IMDs) through leakage current and ground potential test values ​​by artificially inducing resistive and capacitive faults in a live state
  • Criteria for determining whether IMD is operating normally (KEC 242.10.3)
    By installing an insulation monitoring device, it is possible to quantitatively test whether the IT system insulation resistance decreases to the set value and an alarm is given through display and sound equipment.
    (For medical use: green when the indicator is normal, yellow when the condition is met)

IMD-T

Controller

Display

Specification
Format Specifications
Input power AC 220 V ±10%
Ground voltage measurement range AC 100 ~ 500 V
Types available for testing Resistive or capacitive
Resistance test 5㏀ 10㏀ 50㏀ 100㏀
Capacitive test 0.022㎌ 0.047㎌ 0.47㎌ 1.0㎌
Leakage current detection range 0.1 ~ 999.9 (mA)
Operating time when leakage current is detected 0~60 (s)
Leakage current 5mA or less
Communication interface RS485
Alarm time 60 (s)
Size 308 × 260 ×125 (mm)
Weight 3.20 (㎏)
Leakage current test method
  • 01
    Connect the tester lead wires to the power output terminals A1 and A2, one wire each.
  • 02
    Turn on the tester
  • 03
    (Resistance) Tester settings (Line: A1, Fault type: Resistive, Resistance: 0.5KΩ)
  • 04
    (Capacitive) Tester Settings (Line: A1, Fault Type: Capacitive, Resistance: 0.47uF)
  • 05
    Check the tester and display
  • 06
    Check the display window of the intelligent power supply fault current meter
Why leakage current must be 5mA or less
1. Effects of electric current on humans and livestock See Figure 19 of KS C IEC TS 60479-1
There are no harmful physiological effects on humans in AC-2 zones. In particular, it can be seen that there are no harmful physiological effects on livestock (humans and livestock) even when the current flows continuously at 5mA or less.
  • AC-1 : No response
  • AC-2 : There are no harmful physiological effects.
  • AC-3 : If the current flows for more than 2 seconds, convulsions and breathing difficulties may occur.
  • AC-4 : Cardiac arrest, respiratory arrest, and moderate burns
2. Description of the time/current domain
Time/current domain for 15–100 Hz in the path from hand to foot
Area Range Physiological Effects
AC-1 Up to 0.5 mA curve a Detection is possible, but no surprise reaction
AC-2 From 0.5 mA to curve b Detected and involuntary muscle contractions may occur, but generally no harmful electrophysiological effects
AC-3 Between curves b and c1
  • Strong involuntary muscle contractions, shortness of breath, reversible cardiac dysfunction, and paralysis may occur.
  • The effect increases as the current increases. Damage to the organ is generally not expected.
AC-4a Exceeding curve c1
  • May cause pathophysiological effects such as cardiac arrest, respiratory arrest, and burns or other cellular damage.
  • As the magnitude and duration of the current increase, the likelihood of ventricular fibrillation increases.
c1~c2 AC-4.1 Increases the risk of ventricular fibrillation by approximately 5%
c2~c3 AC-4.2 Possibility of ventricular fibrillation of up to about 50%
c3 초과 AC-4.3 Probability of ventricular fibrillation exceeding 50%
a
During the conduction period of less than 200 ms, ventricular fibrillation is initiated only within the vulnerable period when the current exceeds the threshold.
This figure for ventricular fibrillation relates to the current flowing from the left hand to the two feet.
For other current paths, cardiac current coefficients should be considered.
3. Electrical fire/spark
Electrical fire sparks are stated in papers and other publications to occur at 35mA or more, but our own testing has shown that they occur at 15mA or more, which is the level at which circuit breakers do not operate.

ITI Co., Ltd. will strive to create a safe electrical environment free from electric shock and fire accidents.