Krishna Electrical Work

DIN SERIES

KEW meters are designed to an internationally accepted standard. The dimensions comply with the requirements of DIN 43700 and scales with DIN 43802. The performance conforms to IS 1248-83/93. The cases are made of ABS plastic material which has high tracking index for maximum electrical strength and safety.

Powerful and stable Alnico Magnets.
Polished Carbon Steel Pivots.
Jewelled Bearings for maximum accuracy.
Phosphor Bronze Springs.
Air tight and anti-static cases.

SALIENT FEATURES

Compact in size (build in depth 33mm).
Rugged movement ensures sustained accuracy and reliability.
Square bezel permits edge to edge mounting, allowing maximum use of panel space.
Interchangeable dial for range portability.
Clear scaling for easy reading.
Flame retardant case available as per request.

General Specifications

Accuracy	±1.5 / 2.0 of FSD
Measurable Quantities	AC and DC Voltage or Current
Pointer deflection	0 - 90º
Frequency	50/60Hz
Sensitivity	1000Ω/V (Voltmeter); 2000Ω/V (ammeter)
Overload Capacity	According to IS: 1248 / IEC 51
Short duration for voltmeter	2 times for 5s: 1 overload 2 times for 0.5s: 9 overloads
Short duration for ammeter	10 times for 5s: 1 overload 10 times for 0.5s: 9 overloads
Continiously	1.2 times rated voltage or current
Operating Temperature	-10 to 55°C
Storage Temperature	-25 to 65°C
Relative Humidity	< 75% annaul average, non-condensing

Range charts

Model	Description	Ammeter	Voltmeter
SM – 48, 72, 96, 144	DC Moving Coil	25μA - 60A, 1A - 10000A*	10mV - 600V
SIF – 48, 72, 96, 144	AC Moving Iron	10mA - 100A, 1A - 10000A**	10V - 600V
CM – 48, 72, 96, 144	AC Moving Coil Rectifier	1mA - 20A	1V - 600V

Range charts

Model	Dimensions (mm)								Scale Length
Model	A	B	C	D	E	F	G	Panel Cutout	Scale Length
SM – 48	48	33	6	40	42	–	18.5	43x43	40
SM – 72	72	33	16	48	57	18	38	67x67	60
SM – 96	96	33	6	48	102	30	40	91x91	90
SM – 144	144	33	6	99	138	5	25	138x138	146