Cambridge Instruments & Engg. Co.

Bara Bazar, Kolkata, West Bengal

Micro Processor Autoranging Digital Earth Tester is direct replacement of the conventional hand generator type tester. It is designed for measurement of the resistance of earthing used in the electrical equipment as well as for measurement of ground resistivity. It can also used for measurement of the other low regular & liquid resistances.

Type CIE-5000 PI is a universal, Multi-purpose instrument for checking insulation and conductance during simulated operating conditions in high tension electrical and electronic fields. It is ideally useful for the electrical maintenance of Rotating plant machinery, Distribution networks, Communication cable, Insulators and servicing of Control and switching equipments, transformers and industrial installations. Di-electric Absorption test requires the voltage to be applied for several minutes. Operating an instrument under motor power allows this to be done easily. The high sensitivity of the instrument enables sensible reading to be obtained from such polarization index tests. (Polarisation Index = Resistance after 10 min./Resistance after 1 min.)

It is a versatile mains operated insulation tester which is recommended for every electrical engineer. The CIE -5000PI is a smart microprocessor based 5KV Insulation Tester and analyser besides the conventional measurement of Insulation resistance upto 100.0G Ohm. Its advance features allow one to automatically measure both the polarization Index and Dielectric absorption ratio, thus significantly simplifying the testing of transformers and motors. The Insulation Tester is a mains (230V AC , 50-60Hz) operated Insulation Tester and analyser. The test voltage may be chosen in between 1KV, 2.5KV and 5KV. Due to its measurement principal (actual voltage and current readings) the accuracy of resistance measurement is not affected by any test voltage error. The built in chronometer automatically counts the elapsed time since the start of the measurement and shown over display by which user can easily understand the actual condition of the insulation testing (e.g. in DAR Mode or in PI mode or in IR mode)The measured values all are automatically hold over display until the instrument restart or off. The Test Voltage shown over-display at the time of measurement.

• High Voltage Out Put Indicator
• 16X2 Jambo LCD Display.
• Start/Stop Button
• KV Selection Switch (1KV, 2.5KV, 5KV)
• Mode Selection Switch (IR, DAR, PI)
• Terminals (LINE, EARTH, GUARD)
• Power Switch (BACK PANEL)

Special Features :

• Accurate
• Quick response and Graceful appearance
• Operated by 230volts, 50Hz AC mains
• Seasoned wooden with sunmica finish
• Anti - parallax mirror scale with knife edge pointer
• Highly Sensitive cross-coil indicator

Anti magnetic aluminium body, centrifugal clutch, metallic protected flap over glass window, collapsible driven generator handle, Anti-parallax mirror scale. Guard Terminal & externally accessible infinity adjuster are provided for instrument having insulation rang 1000MΩ & above.

'cie' a.c. High voltage breakdown test set is ideal for fast accurate & reliable testing of withstand/breakdown test of electrical & electronic materials, components, equipments, panel boards, etc.

• robust powder coated sheet metal case
• elegant look
• kv meter to read the output voltage
• millimeterto show leakage current
• speedy and accurate testing of breakdown/withstand test of electrical & electronic components, materials, equipments, panel board etc.

• input voltage: 230v, +/- 10%, 50hz, 1 phase a.c.
• output voltage: continiously variable from
  • (i) 0 to 3 kv ac for 3 kv test set
  • (ii) 0 to 5 kv ac for 5 kv test set

Model : CIE / 666

Digital Insulation Tester (DIT) is a battery operated compact precision grade insulation tester housed in a robust and shock proof ABS casing. The DIT will find, application in Electrical Contracting, Domestic as well as Industrial, DOT, Defence, Cable Manufactures, Transformers & Motor Manufactures etc.