QJ57 / QJ57P-1 DC double-arm bridge-WIREMAC INTERNATIONAL CO., LIMITED. -electric wire/electric wire

QJ57 / QJ57P-1 DC double-arm bridge

QJ57 DC dual-arm bridge is equipped with transistor amplifier galvanometer and working power supply. Suitable for industrial and mining enterprises, laboratories or workshops, and field workplaces for DC resistance measurement; used to measure the DC resistance, metal conductor resistivity, wire resistance, DC shunt resistance, switch, electrical contact Resistance and winding resistance and steady rise test of various motors and transformers.QJ57P-1 has AC and DC dual-use. In the case of commercial power, choose AC / DC power supply, save the battery and often replace it.

QJ57 / QJ57P-1 DC double-arm bridge

　　QJ57 / QJ57P-1 uses:

　　1. Measure the actual resistance of metal rods, sheets, cables, wires, etc.

　　2. Check the welding quality of the current bus bar and metal shell.

　　3. Check and adjust the low resistance standard, high current shunt, power resistor, etc.

　　4. Determination of contact resistance of switches and electrical appliances.

　　5. DC resistance measurement and temperature rise test of various types of motors, transformers and windings, etc.

　　QJ57 / QJ57P-1 main technical performance:

　　Measurement range: 0.01μΩ ~ 1.11110kΩ

　　Accuracy: 0.05%

　　Power source: internally connected to zero indicator power supply 9V (1 6F22 type battery) internally connected to the bridge working power supply 1.5V (8 dry batteries No. 1 in parallel)

　　Dimension: 300 × 250 × 160mm

　　Weight: about 6kg

Range factor	Effective range (Ω)	Expressed as a percentage
Range factor	Effective range (Ω)	The rank index C
103	0~1111.10	0.05
102	0~111.110	0.05
10	0~11.1110	0.05
1	0~1.11110	0.05
October 1	0~0.111110	0.05
October 2	0~0.0111110	0.2
October 3	0~0.00111110	2

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