Maintenance of MV/HV transformer substations
For the maintenance of MV/HV transformer stations, we use the 2014 High Voltage Regulation, specifically 3337.2014 (depending on the activity to be developed, the maintenance of transformer stations, we have taken it as a reference and I enclose a copy of the regulation published in the BOE (Official State Gazette): Monday 9 June 2014 No. 139) For the maintenance of HV lines, we will use the 2008 Regulation specifically 223.2008.
https://www.boe.es/boe/dias/2014/06/09/pdfs/BOE-A-2014-6084.pdf
In order to clarify what technical means are required for installation companies for high voltage installations, we detail below the requirements for these companies:
Installation companies must have the following minimum equipment; this is necessary equipment for any category. For any category, a generator with a minimum power of 5 kVA must be available, as well as torque spanners to ensure the tightening torques of the connections.
[Telometer: This is a fundamental piece of equipment, our AMRU-200 equipment is the only meter on the market that implements all the measurement methods, which offers the installer the versatility of being able to carry out the measurement by the technical method of 2, 3 or 4 pole technical method, pulse method (4/10µs, 8/20µs, 10/350µs), double clamp method without the need to place auxiliary electrodes, soil resistivity measurement and pulse test. This equipment has a GPS version, which stores the coordinates in the memory to geolocate the measurements.
Insulation tester of at least 10 Kv**:](/productos/medidores-resistencia-aislamiento/hasta-10kv/) Our proposal in this case is the AMIC-10k1 insulation resistance tester, which meets the 10Kv test voltage requirement. It is a device for measuring AC and DC capacitance and voltage, measuring leakage current and measuring the continuity of protective connections and equipotential bonding according to EN 61557-4 with a current >200 mA. It is a very comprehensive device for measuring the insulation resistance of 40TΩ. The test voltage range: 50 - 1000 V, in 25 V steps or 1000 - 5000 V, in 50 V steps. For more information, you can download the catalogue by clicking on the following link:
Grounding and short-circuiting poles**: Grounding electrode testers AMRU-200 The AMRU-200 grounding electrode testers include 4 poles for measurement according to the Wenner method.
The ACMM-40 and ACMM-10 multimeters have been designed to measure DC and AC voltage, DC and AC current, resistance, capacitance, frequency, duty cycle, temperature and also to test diodes and continuity. They are essential equipment and must be purchased by the installer according to the standard. To see the details and technical characteristics of this equipment:
Milliohmmeter** with 50A DC power source: We recommend the use of the QMOM-200 S3. This equipment is the fourth generation of microprocessor-based microohmmeters from Amperis Products S.L. It is designed for testing contact resistances of circuit breakers, weld joints, or any application with low resistance to measure. This equipment allows high current injection and is designed to meet the requirements of IEEE C57.09-1999 (5.15) for testing circuit breaker resistance. It is very light at 9.9 kg. The QMOM-200 S3 can accurately measure resistance values ranging from 1 micro-ohm to 5 ohms. It has a resolution of 0.1μohm as long as the test current is above 5A. With the QMOM-200 S3, you can select a real DC current from 1A to 200A to measure the resistance of the equipment under test.
The QMOM-200 S3 can be used to measure the resistance of the equipment under test with a real DC current of 1A to 200A. * Tensiometer with steps and contact with a 5A current source for third category installations, and with a 50A current source for higher category installations.
Thermographic camera**:](/productos/camaras/camaras-termograficas/) We have a wide range of thermographic cameras in our catalogue with different configurations and prices for use to cover all the applications that thermography offers.
Conductor continuity tester:** Installers and high voltage installation companies are classified in the following categories: AT1: for high-voltage electrical installations with a nominal voltage not exceeding 30kV and AT2: for high-voltage electrical installations without voltage limits. The responsible declaration of the installation company must expressly state the category in which it may operate. We offer this equipment:
Up to now category AT1, the additional equipment for category AT2 is as follows:
- Excitation current and no-load loss measuring system for power transformers.
- Ratio and phase difference measuring equipment for transformers.
- Transformer capacitance and delta tangent measurement.
- Dielectric strength measurement equipment for liquid insulators.
- Circuit breaker closing and opening time meter.