SPD Intelligent Monitor 3 Way Leakage Current MODBUS RTU Lightning Surge Protection
Product Summary
Product Features● One channel NTC acquisition port: measure the surface temperature of SPD, with ultra/low temperature alarm function, threshold can be set, and independent alarm indicator can record 30 times (register reading) of alarm times and the date and time of alarm occurrence.● One lightning ...
Product Custom Attributes
SPD Intelligent Monitor
,MODBUS RTU Lightning Surge Protection
,3 Way SPD Monitor
Basic Properties
Trading Properties
Product Description
| Product Features |
● One channel NTC acquisition port: measure the surface temperature of SPD, with ultra/low temperature alarm function, threshold can be set, and independent alarm indicator can record 30 times (register reading) of alarm times and the date and time of alarm occurrence. |
● One lightning surge collection port: monitoring line surge current, triggering threshold of 500A, T1/T2/T3 compatible. The surge count is displayed locally for 0-9999 times, and the register records over 650 million times, recording the date and time of each lightning surge occurrence. |
● 3-way SPD module leakage current monitoring: Real time output of 3-way leakage current values. Based on the changes, fluctuations, and trends of leakage current, real-time calculation and analysis are carried out through preset algorithms to generate SPD module life percentage data (register reading), which is directly presented to the user. Each SPD provides independent local status indicator lights, with green, orange, and red corresponding to three states: normal, early warning, and alarm. Equipped with two working modes of SPD: remote signaling and non remote signaling. |
● Display mode: 4-digit Nixie tube display screen, with the function of round display of lightning strike times, ambient temperature, ambient humidity and NTC temperature. |
● Equipped with a dedicated IoT communication expansion module, it can achieve communication methods such as Ethernet, Lora, 4G, etc. |
● In conjunction with specialized monitoring software platforms, an intelligent lightning protection monitoring system can be formed. |
Product Specification
Models | LS-MJK/03 | |
Power | 12VDC, anti reverse protection | |
P.W | 1W | |
| Interface:RS485 | The default baud rate is 9600; Check bit N; Data bit 8; Stop bit 1 | |
Device addresses 1 to 255 are optional, default 1 | ||
1-channel NTC temperature acquisition | NTC sensor | Collect the surface temperature of lightning arrester;Collection range -30~160 ℃; High/low temperature alarm function, when the NTC temperature is higher or lower than the set temperature, an alarm will be triggered, and the LED indicator light will be lit to record the date and time data of the last 10 alarms |
2-way switching value acquisition | DRY CONTACT | Used to collect remote signal of lightning arrester or status signal of backup protector (or switch); Close the alarm and disconnect normally; Alarm status illuminated LED indicator light |
3-way leakage current collection | Leakage current | Monitor the leakage current of L1/L2/L3-N (PE) module (50/60Hz power frequency), with a monitoring range of 100uA~150mA |
3-way SPD remaining life | Based on the changes, fluctuations, and trends of leakage current, real-time calculation and analysis are carried out through preset algorithms to generate SPD module life percentage data, providing local status indication(green/orange/red=normal/warning, alarm) and remote data reading | |
Temperature and humidity collection | temperature | -25～70℃ |
humidity | 0～100% RH | |
1-way lightning surge acquisition | Lightning stroke count | Can record over 650 million times; Can record the date and time of the last 9999 surges |
trigger current | 500A～100kA | |
Surge type | T1,T2,T3 | |
sensor | Induction coil (installed on PE line) | |
1-way PE access detection | Identify ungrounded and false grounded states and provide local and remote status indications | |
Power down storage | Alarm data is permanently maintained after power failure; Clock data remains powered down for more than six months | |
System upgrade | Upgrade firmware remotely through serial port; Used in conjunction with Ethernet, LORA, and 4G communication expansion modules, supporting remote firmware upgrades in transparent mode | |
Housing material | PC+ABS,UL 94 V-0 | |
Installation method | DIN Rail 35mm | |
Work environment | -25～70℃,0～95% RH | |
Notices
1. The NTC sensor must be correctly attached to the SPD surface to ensure accurate temperature measurement.
2. The induction coil for surge acquisition must be installed on the PE line as required.
3. Set the high/low temperature alarm threshold according to the SPD's operating temperature range.
4. Ensure reliable grounding of the device to avoid electromagnetic interference affecting monitoring accuracy.
5. Regularly check the connection between the device and SPD modules to ensure signal integrity.
6. The device supports remote firmware upgrade via serial port or IoT modules for function expansion.
FAQ
Q1: How many SPD modules can it monitor?
A1: It can monitor 3-way SPD modules, including leakage current and life percentage analysis for each.
Q2: How many lightning surge records can it store?
A2: It can record over 650 million lightning surges, with the latest 9999 records stored with date and time.
Q3: Does it support remote monitoring?
A3: Yes, it supports Ethernet, Lora, 4G and other communication modes via IoT expansion modules, enabling remote monitoring.
Q4: What is the SPD life indication method?
A4: It uses three-color indicators: green for normal, orange for warning, and red for alarm, with life percentage data available via remote reading.
Q5: Does it have power-down storage function?
A5: Yes, alarm data is permanently stored after power outage, and clock data remains for over six months.
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