Polycarbonate housing having UL 94 V-0
All Rishabh meters are housed in robust case with classical finish. The case is made of polycarbonate, which is flame retardant and non-drip and confirms to international regulations UL 94 V-0. Polycarbonate is a very tough and light weight engineering plastic material which has got the best mechanical properties very close to a metallic housing. It is 10% glass filled, glass fibers give it extra toughness.
All Rishabh meters are fitted with scales which slide in guide slots and there is a window which click-fits into the housing after the scale is fitted or removed. This is the only meter in India which offers this interchangeable scale feature. The advantage is that it reduces the inventory of the stockists, panel builders as well as end users. The basic meters are accurate to 1% and the variation scale to scale is less than 0.5% giving a total accuracy of 1.5% max. The guide slots are very accurately designed such that the pointer cannot be damaged even by the most unskilled user. At the same time the window is such that it closes automatically if left open inadvertently when the meter is fitted in the panel. Out of the four directions in which the dial can be inserted, there is only one correct position in which the dial can be inserted. The dial has a small slot by which it can be pulled out easily either using nail or a tip of a pen or clip.
Knife edge Pointer
Pointer edge is a knife edge and is made of aluminium sheet of 0.05mm thickness. This makes it very light weight but at the same time, it is rigid by a specially designed V-profile. The sheet used is a pre-coated aluminium sheet so that the adhesion of the paint is very good. The pointer is fitted on to the cross arm by a special flapping process so that it can never disengage even in extreme temperature or presence of vibration or shock.
This meter is a perfect solution for the measurement with protection. Like Moving iron analog panel meter, it measures rms values of AC current and voltage and also protects the output equipment or circuit according to the set trip levels.
Easy replacement of glass and bezel
Easy replacement of glass and bezel is possible in Rishabh meters at customer end without any tool. The glass with zero knob and bezel are click fitted in the meter.
* Analog meter with protection trip relay.
* A perfect combination for measurement & protection.
* Used in Transformers, Switchboard and Control panels.
* Conforms to IEC 60051, IEC 61010, IEC 61554, DIN 43718 and UL 94 V-0 standards.
* Interchangeable scale keeping basic meter same.
* Enclosure conforming IP-52.
* Rated insulation voltage 1000V
* Relay set accuracy : +/- 5%.
* Analog meter accuracy : +/- 1.5%
* Installation category : 300V CAT III
* Double output relay contacts
* User adjustable trip setting 0-100%
* User adjustable Time Delay 0-30 sec.