CB Testing

In combination with CIBANO 500, the CB MC2 contact module increases convenience and safety during testing. It also expands the scope of testing by adding the dynamic contact resistance test, which detects wear-related problems with main and arcing contacts.

The innovative and clearly structured connection concept means that all tests can be carried out without the need for rewiring. The circuit breaker can be grounded on both sides to prevent dangerous voltages on the equipment.

One or more CB MC2 contact modules are directly attached to the interrupter units. This keeps the high-current cables as short as possible minimizing the test set-up time. Interference is considerably reduced thanks to the digital connection to CIBANO 500.

Key features

• Dynamic contact resistance test
• High-current cables kept as short as possible (weight reduction)
• Low interference due to the digital connection to CIBANO 500
• Fast test set-up and reduced risk of wiring errors

The CIBANO 500 circuit breaker test system combines a micro-ohmmeter, timing analyzer, and a coil and motor supply in a single device. This enables all important circuit breaker tests to be carried out even when a station battery is not available.

With the 3-in-1 system all types of circuit breakers (medium- and high-voltage circuit breakers with live and dead tank design) can be tested. It features a globally unique connection technology which considerably reduces the wiring effort and time required. In addition, OMICRON's Primary Test Manager Software (PTM) ensures convenient operation and delivers one clear, combined report for all the tests performed.

The innovative accessories can be used to extend the scope of testing as well as increase convenience and safety during testing.

Key features

• 3-in-1 system: micro-ohmmeter, timing analyzer, and AC/DC power supply
• One system for medium or high-voltage circuit breakers with live or dead tank design
• Low wiring effort
• One clear report for all tests
• Lightweight test system (20 kg / 44.1 lbs)

Applications

The following 5 standard tests can be carried out on all circuit breakers using CIBANO 500:

• Static contact resistance test (micro-ohm measurement)
• Timing tests
• Coil and motor current analysis
• Minimum pick-up test
• Under-voltage condition test

The 750ADM mk2 and 750ADM-H mk2are compact, rugged primary current injection systems with a 750A output capability. The 750ADM has a maximum no load output voltage of 3.5V and the 750ADM-H has a maximum voltage of 5V. The units are ideally suited to all low power primary injection tasks requiring up to 750A for short periods.

Where higher currents and powers are required for primary injection, 7kVA and 20kVA primary injection systems are available. The PCU1-SP and PCU2/E systems have separate control and loading units, allowing a wide range of load conditions to be covered with different loading units.

The750ADM and 750ADM-Hhave two outputs, allowing injection of currents as low as a few hundred milliamps and up to 750A. Voltages up to 16V are available on the 40A output, allowing higher impedance trips to be tested. Four true RMS metering ranges are provided, allowing the full scale of the meter and trip level to be set independently of the selected output. The metering has a capture time of less than 20ms, allowing the RMS of a single cycle to be accurately measured. Industry standard connectors are used on all inputs and outputs for convenience, reliability and safety.

The 750ADM and 750ADM-H are comprehensively protected by electronic overcurrent and thermal trips.

The timing system is very flexible without compromising ease of use, allowing trip times, reset times and reclose times to be quickly measured to a high degree of accuracy. Two contact inputs are provided, each of which may be trigged by a volt-free contact or a dc voltage. The contact inputs auto-sense for normally open or normally closed contacts.

The 750ADM can be used to test many devices including:

• Circuit breakers
• Primary injection of over-current relays
• Auto-reclosers
• MCB’s
• CT ratio (with external meter for secondary current)

Features

• Primary injection up to 750A
• 2.8V output (750ADM mk2)*
• 4V output (750ADM-H mk2)*
• 16V 40A output for secondary injection
• True RMS digital metering with single cycle capture
• Multi-function timing system
• Large back-lit liquid crystal display
• Thermal and over-current protection
• Automatic switch-off at end of test
• Compact and portable
• Automatic mains voltage selection*
• Clear and simple user interface