Trending Products XJM7-J Measuring box (Infrastructure Energy Measurement Box) to New Delhi Manufacturer
Exterior and dimensions
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XJM7-J metering box (infrastructure power metering box) is suitable in power supply system with AC 50HZ, rated voltage 380 / 220V , as the power measurement in construction site.
Meet GB7251.1-1997 and GB7251.3-1997 standards.
The Dynamic Contact Resistance Meter is an accessory, used with AutoScan series of circuit breaker test systems. DCRM is used essentially to test the MV and EHV Circuit Breakers with insertion type of contacts. A test current of 100A DC is injected into the contact and the dynamic value of the circuit breaker contact resistance is measured, when the CB is performing a C-O operation. A dynamic contact resistance curve (DCRM signature) is plotted against time which helps to monitor the condition of the contacts without opening the interrupter.
Quick performance check of circuit breaker by measuring the Dynamic behavior of contacts.
Correlation of DCRM with travel characteristic with customised Travel Transducers and Fixtures
Option for simultaneously recording DCRM signature of single or multiple (up to 6) interrupters.
Independent, isolated, inbuilt 100 A DC sources for single or multiple (up to 6) interrupters
When DCRM signature is correlated with travel curve, the health of main and arcing contacts can be ascertained and wear & tear of arcing contacts can be estimated
Health of the damping mechanism
Simultaneous recording of DCRM signatures of 6 breaker contacts
Quick performance check of circuit breaker by taking a C-O operation on the CB with time resolution in micro-seconds and selectable delay between multiple operations
Supplied with test lead set suitable for EHV circuit breakers having quick-fit connectors
Housed in a separate chassis that can be integrated in an existing AutoScan series of Analysers
Saves number of operations of circuit breakers by testing all the critical performance parameters of all the poles/breaks in a single shot
Arc died only because contacts melted away.
This is what will happen if you install AC breaker into DC circuit, for example PV circuit.
And don’t try this at home kids. Well fuck it, do it. Better to test this in controlled environment than get a fucking fire in the fusebox.