HYUNDAI HIMAP-FI Digital Protection & Measuring Relay for Marine Switchboards
The HYUNDAI HIMAP-FI is a multifunction digital protection and measuring relay designed for electrical protection, monitoring and breaker-control applications.
The unit shown in SM MARINE SERVICE™ stock is clearly marked:
Model: HIMAP-FI
Manufacturer: HYUNDAI
Country of Origin: Made in Korea
Current Rating: 1A
Voltage Rating: 110/190V
Frequency: 60Hz
Control Voltage: AC/DC 95V–250V, 50/60Hz
Serial Number: E1205304
The front panel also lists the principal relay functions:
OCR-1 • OCR-2 • PSR • NSR • OVR • OVGR • UVR • OCGR
and measurement functions:
Current • Voltage • Power
This makes HIMAP-FI much more than a simple overcurrent relay. It combines protection, measurement, event monitoring, system supervision and breaker-control functions in one digital device.
What Is HYUNDAI HIMAP-FI?
HIMAP-FI is part of Hyundai's digital protection and measuring-device family.
The available HIMAP-FI manual identifies a broad set of protection functions, including:
50 – Instantaneous / definite-time overcurrent
51 – Inverse-time overcurrent
50G – Ground overcurrent
51G – Ground inverse overcurrent
27R / 27M / 27S – Undervoltage
47P – Positive-sequence / phase-related protection
47N – Negative-sequence overvoltage
59 – Overvoltage
64 – Ground overvoltage
67GD / 67GS – Directional / selective ground protection functions
The manual also contains settings for CT/PT ratios, auxiliary relays, system alarms, event reset, Modbus communication and circuit-breaker control.
Why HIMAP-FI Is Important in Marine Electrical Systems
A ship's generator and distribution system must be protected against abnormal current, voltage, ground faults and phase conditions.
A multifunction relay such as HIMAP-FI continuously receives electrical signals from CTs, PTs and associated sensing circuits. When a configured abnormal condition exceeds the relay setting for the required duration, the relay can issue an alarm or operate an assigned output contact.
This enables protection of:
Generators
Main switchboards
Emergency switchboards
Feeders
Circuit breakers
Marine electrical distribution systems
The same unit can also display electrical measurements, reducing the need for separate standalone instruments in some switchboard configurations.
Main Protection Functions
OCR – Over Current Relay
HIMAP-FI supports overcurrent protection functions corresponding to 50 and 51 protection elements.
The manual documents:
50: instantaneous or definite-time overcurrent operation.
51: inverse-time overcurrent operation with selectable characteristics including:
INV – Inverse
VINV – Very Inverse
EINV – Extremely Inverse
This allows protection settings to be coordinated according to the vessel's electrical distribution requirements.
OCGR – Over Current Ground Relay
Ground or earth-fault current can be monitored using the HIMAP's 50G and 51G functions.
The manual documents both definite/instantaneous and inverse-time ground overcurrent configurations.
This function is useful for detecting abnormal current flowing through the ground/earth-fault measurement circuit.
UVR – Under Voltage Relay
HIMAP-FI includes multiple undervoltage functions:
27R
27M
27S
The manual describes different setting ranges and purposes for these UVR elements. For example, 27S can be configured for short-duration voltage-drop alarm behavior without necessarily issuing a breaker trip if no output relay is assigned.
OVR – Over Voltage Relay
The 59 overvoltage element provides protection when measured voltage exceeds the configured threshold.
The HIMAP manual supports definite-time and inverse-time overvoltage operating modes.
OVGR – Over Voltage Ground Relay
The 64 ground-overvoltage function monitors abnormal ground/zero-sequence voltage conditions.
This is relevant to earth-fault protection arrangements using the associated potential-transformer/GPT circuits.
Phase & Sequence Protection
HIMAP-FI also includes phase-related protection functions.
The front panel identifies:
PSR – Phase / positive-sequence related relay function
NSR – Negative-sequence related relay function
The HIMAP manual specifically documents 47P and 47N protection elements, including negative-sequence overvoltage monitoring.
Negative-sequence components can indicate conditions such as:
Phase loss
Incorrect phase sequence
Voltage imbalance
Abnormal phase conditions
These functions are especially useful in three-phase generator and distribution systems.
Current, Voltage & Power Measurement
HIMAP-FI is not only a protection relay.
The front plate confirms three major measurement functions:
CURRENT
VOLTAGE
POWER
The manual shows that the display can monitor:
Ia, Ib, Ic – Phase currents
Iavg – Average current
Io – Zero-sequence current
Ips – Positive-sequence current
Ins – Negative-sequence current
and voltage parameters such as:
Vab, Vbc, Vca – Line-to-line voltages
Vavg – Average voltage
Vo – Zero-sequence voltage
Vps – Positive-sequence voltage
Vns – Negative-sequence voltage
The device also includes power-measurement menus.
Front Panel Controls
The HIMAP-FI front interface includes:
DISPLAY – view measurement and stored information.
SET – access relay and system settings.
ACK/RESET – acknowledge/reset fault indications when the fault condition has cleared.
ENTER / Arrow Keys – navigate menus and change parameters.
OP LED – operating indication.
SYS.FAIL LED – system-failure indication.
FAULT LED – fault/trip condition indication.
The manual also describes menu functions for event records, relay settings and system parameters.
Event and Fault Monitoring
When a protective relay operates, HIMAP can retain information that assists troubleshooting.
The manual recommends checking the HIMAP display after a trip, acknowledging the fault and reviewing the EVENT information along with voltage, current and power measurements.
This can help engineers determine whether a trip was caused by:
Overcurrent
Ground fault
Undervoltage
Overvoltage
Phase/sequence abnormality
Protection-setting issue
External wiring or system condition
Modbus Communication
Later HIMAP-FI manual revisions include Modbus communication functions.
The menu structure contains communication-related settings, including address configuration.
This allows compatible installations to exchange information between the protection relay and higher-level monitoring or automation equipment.
The exact interface and protocol configuration should always be verified against the installed HIMAP hardware and software revision.
Circuit Breaker Control
The manual includes a dedicated section for CB control functions.
Terminal documentation for HIMAP FI/M type identifies multiple protection-relay outputs as well as fixed circuit-breaker ON/OFF relay outputs.
Therefore, HIMAP can participate in both:
Protection tripping
and:
Circuit-breaker control / supervision
depending on system configuration.
This makes it particularly relevant to marine switchboard applications using ACBs or VCBs.
HIMAP-FI Terminal Functions
Publicly available Hyundai HIMAP terminal documentation identifies connections including:
Voltage and Current Inputs
Protection Relay Outputs
Digital Inputs
Power Supply
Communication Connections
CB ON / OFF Outputs
TCS / Trip Circuit Supervision Connections
The terminal layout includes phase current, voltage, zero-sequence inputs and multiple relay-output contacts.
Incorrect wiring or terminal configuration can cause false readings, failure to trip, or unwanted operation.
CT, PT, ZCT & GPT Integration
HIMAP protection depends on the correct sensing-transformer configuration.
The manual specifically instructs users to verify correct ratings for:
CT – Current Transformer
PT – Potential / Voltage Transformer
ZCT – Zero Current Transformer
GPT – Ground Potential Transformer
before installation.
Incorrect CT/PT ratio settings can cause displayed current/voltage values and protection pickup levels to differ from actual primary-system conditions.
Common Problems & Troubleshooting
SYS.FAIL LED Illuminated
A SYS.FAIL indication should not immediately be treated as a simple external electrical fault.
Check the HIMAP control supply, internal/system condition, installation wiring and relevant manual troubleshooting procedures.
FAULT LED Remains On
First confirm that the original protection condition has cleared.
The manual states that ACK/RESET can clear the displayed fault information and fault LED once the operating condition has been removed.
Relay Shows Trip but Breaker Does Not Open
Check:
Assigned auxiliary output relay
Output-terminal wiring
Trip circuit
Breaker trip coil
Protection output configuration
The HIMAP manual specifically recommends checking output settings and digital-output terminal wiring if an operating message is displayed but no external output occurs.
Incorrect Current Reading
Check the CT ratio and CT wiring.
The manual notes that abnormal negative-sequence current indications can be associated with incorrect CT polarity/wiring.
Incorrect Voltage / Phase Indication
Inspect PT wiring and phase connections.
The manual explains that negative-sequence voltage indications can help identify phase-loss or phase-wiring problems.
Display Is Blank
Check the control voltage and external supply wiring before assuming the HIMAP itself has failed.
The photographed unit specifies:
AC/DC 95V–250V, 50/60Hz control voltage.
Communication Failure
Verify:
Communication wiring
Shielding
Address settings
Communication parameters
Cable separation from power circuits
The manual specifically recommends separating communication wiring from power wiring and using correct shield-grounding practices.
Important Replacement Precautions
HIMAP-FI should not be replaced purely by matching the front-panel appearance.
Before replacement, verify:
Exact Model: HIMAP-FI
Rated Current: 1A or installed requirement
Rated Voltage: 110/190V or installed requirement
Control Voltage: Verify installed supply
Protection Settings: OCR, OCGR, UVR, OVR, OVGR and sequence functions
CT/PT Ratios
Output Relay Assignments
Communication Settings
Breaker-Control Configuration
Software / Hardware Revision where applicable
The protection settings are critical because an incorrectly configured relay can cause failure to trip or unintended tripping.
Installation and Replacement Safety
The HIMAP manual includes a specific removal/replacement sequence involving:
Protection-function disabling
CT/PT circuit isolation
Control power OFF
Relay removal/replacement
Control power restoration
CT/PT reconnection
Protection-function re-enabling
It also instructs users to short the CT test circuit appropriately before relay removal.
This work should be performed only by qualified electrical personnel following vessel procedures.
Marine Applications
HYUNDAI HIMAP-FI can be found in marine and industrial electrical distribution/protection systems including:
- Main switchboards
- Emergency switchboards
- Generator panels
- Generator protection systems
- Feeder protection panels
- ACB / VCB breaker panels
- Ship electrical distribution systems
- Marine power-management installations
- Hyundai switchgear systems
- Electrical protection and monitoring panels
Spare Parts & Replacement Availability
SM MARINE SERVICE™ supplies and sources HYUNDAI HIMAP-FI digital protection relays, marine generator protection devices, switchboard protection relays and related Hyundai electrical spare parts.
Search and enquiry references include:
HIMAP-FI • HIMAP FI • Hyundai HIMAP Relay • Hyundai Digital Protection Relay • Hyundai Intelligent Measuring & Protection Device • Generator Protection Relay • Marine Switchboard Relay • OCR OCGR UVR OVR OVGR Relay
Available condition may include:
New • Used • Refurbished • Reconditioned • Tested Working
For replacement enquiries, send a clear photograph of the front label and, where possible, the rear terminal/nameplate details and existing relay settings.
FAQ – HYUNDAI HIMAP-FI
What is HYUNDAI HIMAP-FI?
HIMAP-FI is a Hyundai multifunction digital protection and measuring relay used for electrical protection, measurement, fault monitoring and breaker-control functions.
Is HIMAP-FI a generator protection relay?
It can perform protection functions commonly required in generator and marine switchboard applications, including overcurrent, ground overcurrent, undervoltage, overvoltage and phase/sequence-related protection.
What protection functions are shown on the unit?
The photographed HIMAP-FI front panel lists:
OCR-1, OCR-2, PSR, NSR, OVR, OVGR, UVR and OCGR.
What does OCR mean?
OCR means Over Current Relay.
HIMAP-FI supports protection functions corresponding to ANSI 50 and 51.
What is OCGR?
OCGR means Over Current Ground Relay, used for ground/earth-fault current protection.
What does UVR mean?
UVR means Under Voltage Relay.
What does OVR mean?
OVR means Over Voltage Relay.
What does OVGR mean?
OVGR means Over Voltage Ground Relay, corresponding to ground/zero-sequence voltage protection.
Does HIMAP-FI measure current and voltage?
Yes. The front plate specifically lists CURRENT, VOLTAGE and POWER measuring functions.
Does HIMAP-FI support Modbus?
The HIMAP-FI Rev.1.05 manual includes Modbus communication menus and settings.
Can HIMAP-FI control a circuit breaker?
The manual and terminal documentation include breaker ON/OFF and CB-control functions.
What is the control voltage of the photographed unit?
The front label states:
AC/DC 95V–250V, 50/60Hz.
What is the serial number?
The photographed unit is marked:
E1205304
Where is it manufactured?
The unit is marked:
MADE IN KOREA
Where can I buy a HYUNDAI HIMAP-FI?
SM MARINE SERVICE™ supplies and sources Hyundai marine electrical and protection equipment for worldwide customers.
Short Product Description
HYUNDAI HIMAP-FI Intelligent Digital Protection & Measuring Relay for marine switchboards, generator panels and electrical distribution systems. The photographed unit is rated 1A, 110/190V, 60Hz with AC/DC 95V–250V control voltage and supports OCR, OCGR, UVR, OVR, OVGR, phase/sequence protection, current, voltage and power measurement, fault/event monitoring, communication and breaker-control functions. New, Used, Refurbished and Reconditioned Hyundai marine protection relays available from SM MARINE SERVICE™ with worldwide shipping and technical support.
SM MARINE SERVICE™
Marine Automation & Navigation Equipment Supplier
Available Condition:
• New Equipment • Used Equipment • Refurbished Equipment • Reconditioned Equipment
Stock Location:
• Bangladesh • China
Services:
• Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing
Contact Information
SM MARINE SERVICE™ Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: www.smmarineservice.com
