HYDROCAL Online DGA Specifications
Verified model parameters, measured fault gas capabilities, and integration protocols sourced directly from official MTE AG documentation.
Category 01
Compact Early Warning Online DGA
Cost-effective online monitors engineered for medium-power transmission and distribution transformers, delivering early detection of arcing and overheating faults without complex maintenance.
HYDROCAL 1001+
Single-Gas / TDCG Online Monitor- Measured Fault Gases & Moisture:
- Hydrogen (H₂) or TDCG (Total Dissolved Combustible Gases) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- H₂: 0 – 2,000 ppm | Moisture: 0 – 100 ppm / 0 – 100 % RS
- Degassing / Sensing Technology:
- Capillary Teflon tube degassing with electrochemical / pellistor sensor
- Communication & SCADA Interfaces:
- RS 485 (Modbus RTU / ASCII), 4x 4–20 mA analog outputs, 4x relay alarm contacts
- Power Supply:
- 88 – 264 VAC (50/60 Hz) or 100 – 370 VDC
- Key Operational Capabilities:
- Direct mount to transformer valve without moving parts or oil extraction pumps
- Measurement of dissolved moisture in oil with water activity calculation
- Cost-effective early warning for fleet-wide distribution transformers
- Integrated LCD display with diagnostic indicators
MTE AG SwitzerlandInquire Modelarrow_forward
HYDROCAL 1003
Key-Gas Diagnostic Monitor- Measured Fault Gases & Moisture:
- Hydrogen (H₂), Carbon Monoxide (CO) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- H₂: 0 – 2,000 ppm | CO: 0 – 5,000 ppm | Moisture: 0 – 100 ppm
- Degassing / Sensing Technology:
- Capillary Teflon tube degassing with electrochemical diffusion sensors
- Communication & SCADA Interfaces:
- RS 485 (Modbus RTU), 4–20 mA analog outputs, optional GSM/GPRS modem
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Differentiates thermal degradation of paper insulation (CO) from electrical arcing/corona (H₂)
- No consumable carrier gas or calibration gas cylinders required
- IP55 weatherproof aluminum casing for direct outdoor substation mounting
- Configurable warning and alarm thresholds with dedicated relays
MTE AG SwitzerlandInquire Modelarrow_forward
Category 02
Near-Infrared (NIR) Multi-Gas Online DGA
Mid-range multi-gas monitoring systems utilizing near-infrared (NIR) absorption spectroscopy to quantify key hydrocarbon fault gases without carrier gases or frequent recalibration.
HYDROCAL 1004 genX
3-Gas Diagnostic DGA- Measured Fault Gases & Moisture:
- Hydrogen (H₂), Carbon Monoxide (CO), Acetylene (C₂H₂) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- H₂: 0–2,000 ppm | CO: 0–5,000 ppm | C₂H₂: 0–2,000 ppm | H₂O: 0–100 ppm
- Degassing / Sensing Technology:
- Micro-gas extraction with NIR photoacoustic spectroscopy & electrochemical H₂
- Communication & SCADA Interfaces:
- RJ45 Ethernet, RS 485, Modbus RTU/TCP, DNP3, optional IEC 61850
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Detects high-energy electrical arcing via Acetylene (C₂H₂) detection
- 7-inch high-resolution color touchscreen interface (genX platform)
- Embedded web server for direct browser-based monitoring without proprietary client software
- Maintenance-free optical sensors with no routine replacement parts
MTE AG SwitzerlandInquire Modelarrow_forward
HYDROCAL 1005 genX
4-Gas Diagnostic DGA- Measured Fault Gases & Moisture:
- Hydrogen (H₂), Carbon Monoxide (CO), Acetylene (C₂H₂), Ethylene (C₂H₄) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- H₂: 0–2,000 ppm | CO: 0–5,000 ppm | C₂H₂: 0–2,000 ppm | C₂H₄: 0–2,000 ppm | H₂O: 0–100 ppm
- Degassing / Sensing Technology:
- Near-infrared (NIR) multi-wavelength optical absorption
- Communication & SCADA Interfaces:
- RJ45 Ethernet, RS 485, Modbus RTU/TCP, DNP3, IEC 61850
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Enables standard Duval Triangle 1 diagnostic ratios directly on the unit
- Identification of high-temperature oil thermal faults (C₂H₄) vs arcing (C₂H₂)
- Automated trend logging and rate-of-change (ROC) gas generation alarms
- genX firmware platform with onboard data logging for up to 10 years
MTE AG SwitzerlandInquire Modelarrow_forward
HYDROCAL 1006 genX
5-Gas Diagnostic DGA- Measured Fault Gases & Moisture:
- H₂, CO, Acetylene (C₂H₂), Ethylene (C₂H₄), Methane (CH₄) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- H₂: 0–2,000 ppm | CO: 0–5,000 ppm | Hydrocarbons: 0–2,000 ppm | H₂O: 0–100 ppm
- Degassing / Sensing Technology:
- Near-infrared (NIR) absorption spectroscopy
- Communication & SCADA Interfaces:
- RJ45 Ethernet, RS 485, Modbus TCP/RTU, DNP3, IEC 61850 edition 2
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Full Duval Triangle and IEC 60599 diagnostic ratio capability
- Distinguishes low-temperature thermal faults from high-temperature arcing
- Integrated sampling system with automatic oil temperature compensation
- genX multi-connectivity: dual Ethernet ports, USB download, optional LTE modem
MTE AG SwitzerlandInquire Modelarrow_forward
Category 03
Comprehensive Substation Transmission DGA
Flagship online DGA systems for critical transmission transformers and generator step-up (GSU) units, measuring all critical fault gases plus oxygen and total gas content.
HYDROCAL 1008
7-Gas Full Substation DGA- Measured Fault Gases & Moisture:
- H₂, CO, CO₂, Methane (CH₄), Acetylene (C₂H₂), Ethylene (C₂H₄), Ethane (C₂H₆) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- H₂: 0–2,000 ppm | CO: 0–5,000 ppm | CO₂: 0–20,000 ppm | Hydrocarbons: 0–2,000 ppm | H₂O: 0–100 ppm
- Degassing / Sensing Technology:
- Headspace vacuum membrane gas extraction + Near-infrared (NIR) spectroscopy
- Communication & SCADA Interfaces:
- RJ45 Ethernet, RS 485, Modbus TCP/RTU, DNP3, IEC 61850 edition 2, fiber optic options
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Comprehensive fault identification across all IEEE C57.104 and IEC 60599 diagnostic methods
- Measurement of CO/CO₂ ratio for paper insulation aging assessment
- Integrated hermetically sealed oil circulation circuit with no external oil losses
- Direct integration into substation SCADA with native IEC 61850 MMS & GOOSE
MTE AG SwitzerlandInquire Modelarrow_forward
HYDROCAL 1009
8-Gas Flagship DGA + Oxygen- Measured Fault Gases & Moisture:
- H₂, CO, CO₂, CH₄, C₂H₂, C₂H₄, C₂H₆, Oxygen (O₂) + Moisture (H₂O) + TDCG
- Measuring Ranges & Sensitivity:
- H₂: 0–2,000 ppm | CO: 0–5,000 ppm | CO₂: 0–20,000 ppm | O₂: 0–50,000 ppm | H₂O: 0–100 ppm
- Degassing / Sensing Technology:
- Headspace vacuum gas extraction + NIR absorption + optical oxygen sensor
- Communication & SCADA Interfaces:
- Dual Ethernet RJ45 / LC Fiber, RS 485, Modbus, DNP3, IEC 61850
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Complete assessment including Nitrogen/Oxygen ingress into sealed transformer conservators
- High accuracy across full ambient temperature envelope (-40 °C to +55 °C)
- Modular expansion support for bushing monitoring (ZVCM-1001) and thermal sensors
- Robust IP65 stainless steel / powder-coated outdoor substation enclosure
MTE AG SwitzerlandInquire Modelarrow_forward
Category 04
Mobile & Fleet Screening Online DGA
Laboratory-grade dissolved gas analysis in a portable rugged transit enclosure for substation field engineers conducting emergency diagnostics and screening across transformer fleets.
HYDROCAL 1011 genX P
Portable 11-Gas Laboratory-Grade DGA System- Measured Fault Gases & Moisture:
- H₂, CO, CO₂, CH₄, C₂H₂, C₂H₄, C₂H₆, O₂, N₂, Propane (C₃H₈), Propylene (C₃H₆) + Moisture (H₂O)
- Measuring Ranges & Sensitivity:
- Full ppm ranges across all 11 gases with sub-ppm detection limit for C₂H₂
- Degassing / Sensing Technology:
- Automated headspace gas extraction with multi-channel NIR spectroscopy
- Communication & SCADA Interfaces:
- Built-in Wi-Fi, Ethernet RJ45, USB export, touchscreen display
- Power Supply:
- 100 – 240 VAC (50/60 Hz) or internal battery pack
- Key Operational Capabilities:
- Rugged wheeled Pelicase transit housing engineered for mobile field deployment
- Delivers full 11-gas laboratory-accuracy report in under 2 hours on-site
- Direct oil sampling from transformer valves via quick-coupling hoses
- No calibration gas cylinders or chemical consumables required for routine operation
MTE AG SwitzerlandInquire Modelarrow_forward
Category 05
Multi-Tank 3-Phase Transformer Monitoring
Cost-efficient multi-channel oil manifold systems engineered to monitor banks of three single-phase transformers or separate on-load tap changer (OLTC) tanks with a single central DGA unit.
HYDROCAL 100x-3 Series (1008-3 / 1009-3)
3-Tank Multiplexed DGA System- Measured Fault Gases & Moisture:
- Full 7-gas or 8-gas suite per monitored tank (H₂, CO, CO₂, CH₄, C₂H₂, C₂H₄, C₂H₆, O₂) + Moisture
- Measuring Ranges & Sensitivity:
- Standard HYDROCAL 1008/1009 specifications per channel
- Degassing / Sensing Technology:
- Micro-manifold automated sampling system switching sequentially between up to 3 tanks
- Communication & SCADA Interfaces:
- Independent SCADA telemetry and reporting channels for each monitored tank
- Power Supply:
- 88 – 264 VAC / 100 – 370 VDC
- Key Operational Capabilities:
- Reduces capital expenditure by ~60% compared to installing 3 discrete individual DGA monitors
- Automatic contamination-free flushing cycle between sampling sequences
- Configurable independent alarm limits and diagnostic trending for Tank 1, Tank 2, and Tank 3
- Ideal for generator step-up banks consisting of 3 single-phase units
MTE AG SwitzerlandInquire Modelarrow_forward
Category 06
Bushing Insulation & Thermal Monitoring
Real-time online insulation assessment for high-voltage capacitive bushings combined with comprehensive multi-point transformer temperature and load monitoring.
Bushing Monitor ZVCM-1001
Online Bushing Insulation Monitoring System- Measured Fault Gases & Moisture:
- N/A (Continuous electrical insulation telemetry)
- Measuring Ranges & Sensitivity:
- Leakage current (0 – 100 mA), Capacitance C₁ (change % relative), Tan Delta / Power Factor
- Degassing / Sensing Technology:
- Continuous vector sum and reference voltage comparison on up to 6 capacitive taps
- Communication & SCADA Interfaces:
- RS 485, Modbus RTU/TCP, direct serial link to HYDROCAL DGA unit
- Power Supply:
- Supplied directly from HYDROCAL system or external substation DC
- Key Operational Capabilities:
- Monitors up to 6 high-voltage bushings simultaneously (e.g. HV and LV sides)
- Early warning for bushing insulation breakdown, moisture ingress, or partial discharge
- Compatible with standard test tap adapters for major bushing manufacturers
- Integrated overvoltage and surge suppression at test tap connection
MTE AG SwitzerlandInquire Modelarrow_forward
Package MS-7 Thermal & Auxiliary Monitoring
Transformer Thermal & Multi-Sensor Interface- Measured Fault Gases & Moisture:
- Auxiliary asset telemetry integration
- Measuring Ranges & Sensitivity:
- Top-oil, bottom-oil, ambient temperatures (-50 °C to +150 °C), load current (0–5A CT)
- Degassing / Sensing Technology:
- PT100 resistance temperature detectors + current transformer inputs
- Communication & SCADA Interfaces:
- Standardized unified data packet transmitted via HYDROCAL SCADA interface
- Power Supply:
- Integrated with HYDROCAL host system
- Key Operational Capabilities:
- Calculates transformer hot-spot temperature according to IEC 60076-7 / IEEE C57.91
- Continuous calculation of paper insulation loss of life (aging rate factor)
- Analog inputs for oil level, pressure relief, and gas accumulation relay contacts
- Combines electrical, thermal, and chemical diagnostics into a single dashboard
MTE AG SwitzerlandInquire Modelarrow_forward
Official Technical Documentation
Need Complete HYDROCAL Integration Drawings?
Download the 12-page MTE HYDROCAL Overview brochure containing complete dimension drawings, oil connection piping schematics, and substation SCADA architecture.