GE P4A, Technical Manual, Page: 479 / 850

4 COMMISSIONING EQUIPMENT
Specialist test equipment is required to commission this product. We recognise three classes of equipment for
commissioning :
● Recommended
●
Essential
● Advisory
Recommended equipment constitutes equipment that is both necessary, and sufficient, to verify correct
performance of the principal protection functions.
Essential equipment represents the minimum necessary to check that the product includes the basic expected
protection functions and that they operate within limits.
Advisory equipment represents equipment that is needed to verify satisfactory operation of features that may be
unused, or supplementary, or which may, for example, be integral to a distributed control/automation scheme.
Operation of such features may, perhaps, be more appropriately verified as part of a customer defined
commissioning requirement, or as part of a system-level commissioning regime.
4.1 RECOMMENDED COMMISSIONING EQUIPMENT
The minimum recommended equipment is a multifunctional three-phase AC current and voltage injection test set
featuring :
●
Controlled three-phase AC current and voltage sources,
● Transient (dynamic) switching between pre-fault and post-fault conditions (to generate delta conditions),
●
Dynamic impedance state sequencer (capable of sequencing through 4 impedance states),
● Integrated or separate variable DC supply (0 - 250 V)
●
Integrated or separate AC and DC measurement capabilities (0-440V AC, 0-250V DC)
● Integrated and/or separate timer,
●
Integrated and/or separate test switches.
In addition, you will need :
● A portable computer, installed with appropriate software to liaise with the equipment under test (EUT).
Typically this software will be proprietary to the product’s manufacturer (for example MiCOM S1 Agile).
●
Suitable electrical test leads.
● Electronic or brushless insulation tester with a DC output not exceeding 500 V
●
Continuity tester
● Verified application-specific settings files
For products that use fibre-optic communications to implement unit protection schemes :
●
Fibre optic test leads (minimum 2). 10m minimum length, multimode 50/125 µm or 62.5µm, OR single mode
(according to the model variant) terminated with connectors as required by the product.
● Fibre-optic power meter
●
P59x commissioning instructions
4.2 ESSENTIAL COMMISSIONING EQUIPMENT
As an absolute minimum, the following equipment is required:
●
AC current source coupled with AC voltage source
● Variable DC supply (0 - 250V)
●
Multimeter capable of measuring AC and DC current and voltage (0-440V AC, 0-250V DC)
P54A/B/C/E Chapter 20 - Commissioning Instructions
P54xMED-TM-EN-1 453