Automatic control and protection

The DEIF solutions for hydro turbine driven generators range from pure generator protection with GPU-3 Hydro to complete turbine, generator and auxiliaries control, e.g. hydraulic power pack control, lubrication, cooling etc., using GPC-3 Hydro, MVR-G257 and DM 400 Hydro.

DEIF offers standardised systems for the most common turbine types, Francis, Kaplan, and Pelton, but can supply control solutions for all types.

Hydro turbine controller for parallel with mains or stand-alone generator
Valve controls (main/drain/fill)
Water level control
Relay or analogue output, including proportional valve control, for speed/power control
Turbine control, protection and supervision
Generator control, protection and supervision
Generator excitation control, with or without DEIF AVR, the DVC 310

Short lead times and timely delivery

Our extensive manufacturing capacity allows us to meet any volume demand – regardless of geographical destination. We work hard to make sure our customers receive orders as quickly as possible, and we ship standard products in less than 7 days.

We manufacture all our products in-house at our Danish HQ in Skive to ensure we continue to meet demand and reduce customer lead times. So if you are struggling to get hold of control products through your usual supply channels, there has never been a better time to talk to DEIF.

Contact us to discuss your options

- 90 years of energy pioneering
- Manufactured at the highest standards
- Superior quality
- Unmatched service and support
- Made in Denmark

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Multi-differential relay MDR-2

Short response time (70 ms)
3-phase current detection on both generator sides
Active adjustment of non-balanced current measurements
Measuring accuracy 1 %
Display indicator for all measurements
DIN rail or base mounting with remote mountable display

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Current relay RMC-142D

Earth fault protection at two levels
Built-in filter for 3rd harmonic
LED indication of fault condition
Timer-controlled tripping
LED indication for activated relay
35 mm DIN rail or base mountin

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Generator Differential Protection MVR-G257

Sensitive) Earth fault protection stages INST, DT or IDMT (ANSI 50N/51N(S))
100% Stator Earth fault protection (ANSI 64F3)
Auto-reclose (ANSI 79)
Breaker failure protection (ANSI 50BF)
Cable-end differential protection (ANSI 87)
Current transformer supervision (ANSI 60L)
Current unbalance/broken conductor protection stages INST, DT or IDMT (ANSI 46 /R/L)
Directional (sensitive) residual over-current protection stages DT or IDMT (ANSI 67N)
Directional three-phase over-current protection stages DT or IDMT (ANSI 67)
Frequency protection stages (ANSI 81O/U)
Fuse failure (ANSI 60)
Harmonic over-current protection/inrush blocking stages INST, DT or IDMT (ANSI 50H/51H/68)
Inadvertent energizing (ANSI 50/27)
Loss of field (ANSI 40)
Machine thermal overload protection (ANSI 49M)
Motor or generator differential protection, 2-winding (ANSI 87M/G)
Over-excitation protection (ANSI 24)
Overvoltage protection INST, DT or IDMT (ANSI 59)
Positive/negative sequence under-/over-voltage protection INST, DT or IDMT (ANSI 27P/47/59P)
Power factor (ANSI 55)
Programmable stage (ANSI 99)
Rate of Change of Frequency ROCOF (ANSI 81R)
Residual voltage protection INST, DT or IDMT (ANSI 59N)
Restricted low-impedance earth fault protection (ANSI 87N)
Reverse-/under-/over-power protection INDT, DT or IDMT (ANSI 32)
Synchrocheck (ANSI 25)
Three-phase over-current protection INST, DT or IDMT (ANSI 50/51)
Under-impedance protection (ANSI 21)
Under-voltage protection INST, DT or IDMT (ANSI 27)
Vector jump/surge (ANSI 78)
Voltage controlled/dependent over-current protection (ANSI 51V)
Voltage memory