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1. Introduction
IM902 is a 90A magnetic latching relay with anti-surge of 3kA and over-voltage/under-voltage protection function.
The main advantages are: Max. Switching Current 90A , Rated Coil Consumption 1.5W/2W, Dimension: 38*30*16.5mm, IEC62055-31 UC2 Certified,
Anti-surge up to 3KA, effectively suitable for over-voltage and under-voltage protectors
2.Technical Parameters
| Rated Load | 90A 250VAC |
| Contact Form | 1A/B |
| Contact Material | AgSnO2 |
| Max. Switching Voltage | 250VAC |
| Max. Switching Current | 90A |
| Max. Switching Power | 22500VA |
| Contact Resistance | <1mΩ |
| Pick-up Time | ≤20ms |
| Release Time | ≤20ms |
| Electrical Endurance | 5000Cycles(resistive@60A) 5000Cycles(inductive@60A) 6000Cycles(resistive@90A) |
| Mechanical Endurance | 100000 Cycles |
| Insulation Resistance | 1000MΩ(DC 500V) |
| Dielectric Strength: | |
| Coil to Contact | 4000VAC,50/60Hz,1Min. |
| Across Open Contact | 2000VAC,50/60Hz,1Min. |
| Temp.Rise | ≤55K When Ambient 40℃ |
| Ambient Temperature | -40℃~70℃ |
| Ambient Humidity | 45%~95%RH |
| Vibration | 1.5mm(DA),10 ~ 55Hz |
| Shock Resistance: | |
| Functional | 10G(98m/s2) |
| Destructive | 100G(980m/s2) |
| Surge Immunity | 3KA/10ms |
| Dielectric Creepage | 0.7mm Gap Min |
3.Application Notes:
3.1. Suggestions of relay’s input
(1) Polarity-Please check the polarity inside of our technical specification, if single coil then”+ -” or “- +”are fine, you can change it by one pulse.
If double coil then it‘s necessary to confirm “-+-” or “+-+“before leaving the our factory.
(2) Driving-Please energize the relay at our recommend pulse width, rated voltage for reliable performance,
if 1.5 time or 2 times of value or lower driving condition plz confirm with our engineer.
(3) Relays’contact status may be changed during transportation or installation due to impact of external force, therefore please reset to the required status.
3.2 Suggestions of relay’s output
(1) When choosing the relay with hard connection,please avoid the external force on load terminals during or after the installation.
(2) When the relay will be connected with screw or bolts to the relays’ terminals,
plz make sure your connection is fastened and prevent relay from damages or other safety problems due to temp. Rise..
(3) The sampling signal wires of products are limited, please do not pull or torque during installation.
4.Why Choose Us
IVY METERING is the manufacturer and provider in the field of electricity switching & metering. Our main products include switching series (relay&switch), measuring components(CT&shunt), measuring assembly(RCD&sensor), EV charging components(residual current monitor/EV relay/M-bus current sensor/PCB current transformer/power module/DC meter), metering devices(energy meter&IOT device).
With the factory in Zhejiang province and sales center in Shanghai city, our products are recognized by the reputable lab/certificates such as SGS, NMI,KEMA,ANSI and exported to more than 68 countries with quality assurance.
Based on innovation, integrity, cooperation, win-win, we aim to build organization with employee well-being, lead world in harmonious metrology. What's more we sincerely hope to focus on energy management and light up better life.
5.FAQ
Q1: What kind of product and service do you have?
We provide all kinds of electronics including power relay, latching relay, change-over switch, current transformer, shunt, smart sensor, communication & power supply module, transformer etc.
The manufacturer of meter instrument, electrical device, EV charger, medical equipment can find one step solution here. Individual buyer,distributor or (sole/ designated) agents are also welcomed by us.
Q2: Are you are factory or trading company?
We are the manufacturer, designer and sales company. Our own factory was located in Tongxiang city of Zhejiang province.
For our history plz click About us or watch IVY factory video on Youtube.
Q3: Whether the price will change greatly?
To business customers, we mark price can be negotiated here as huge demand.
Usually we will not change the prices unless some force majeure such as trade war, exchange rate change greatly etc.
Q4: Can you offer customized solution, how should I get a quotation?
Yes! We can offer customized products especially when we supply EV accessories and meter accessories. To get a quotation plz kindly offer your basic company info for registration and offer your drawing. It usually takes 12 hours to 48 hours to finish the design and drawing (If complicated then plz refer to pratcatical situation).
Q5: How do you handle the quality problems?
We are proud of our quality! If any accidents on quality, we have before-sales, in-sales and after-sales service. And every customer will have your own sales expert and technical support.
6.Relay Knowledge
*Why a latching relay?
A latching relay coil, unlike a non-latching or mono-stable relay, consumes power only for an instant while the relay is being switched. Since the relay coil does not need to be energized constantly, this results in a much lower power usage. The relay will retain this position (state) across a power outage.
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